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Kerala Agricultural University, Thrissur
The history of agricultural education in Kerala can be traced back to the year 1896 when a scheme was evolved in the erstwhile Travancore State to train a few young men in scientific agriculture at the Demonstration Farm, Karamana, Thiruvananthapuram, presently, the Cropping Systems Research Centre under Kerala Agricultural University. Agriculture was introduced as an optional subject in the middle school classes in the State in 1922 when an Agricultural Middle School was started at Aluva, Ernakulam District. The popularity and usefulness of this school led to the starting of similar institutions at Kottarakkara and Konni in 1928 and 1931 respectively.
Agriculture was later introduced as an optional subject for Intermediate Course in 1953. In 1955, the erstwhile Government of Travancore-Cochin started the Agricultural College and Research Institute at Vellayani, Thiruvananthapuram and the College of Veterinary and Animal Sciences at Mannuthy, Thrissur for imparting higher education in agricultural and veterinary sciences, respectively. These institutions were brought under the direct administrative control of the Department of Agriculture and the Department of Animal Husbandry, respectively. With the formation of Kerala State in 1956, these two colleges were affiliated to the University of Kerala. The post-graduate programmes leading to M.Sc. (Ag), M.V.Sc. and Ph.D. degrees were started in 1961, 1962 and 1965 respectively.
On the recommendation of the Second National Education Commission (1964-66) headed by Dr. D.S. Kothari, the then Chairman of the University Grants Commission, one Agricultural University in each State was established. The State Agricultural Universities (SAUs) were established in India as an integral part of the National Agricultural Research System to give the much needed impetus to Agriculture Education and Research in the Country. As a result the Kerala Agricultural University (KAU) was established on 24th February 1971 by virtue of the Act 33 of 1971 and started functioning on 1st February 1972. The Kerala Agricultural University is the 15th in the series of the SAUs.
In accordance with the provisions of KAU Act of 1971, the Agricultural College and Research Institute at Vellayani, and the College of Veterinary and Animal Sciences, Mannuthy, were brought under the Kerala Agricultural University. In addition, twenty one agricultural and animal husbandry research stations were also transferred to the KAU for taking up research and extension programmes on various crops, animals, birds, etc.
During 2011, Kerala Agricultural University was trifurcated into Kerala Veterinary and Animal Sciences University (KVASU), Kerala University of Fisheries and Ocean Studies (KUFOS) and Kerala Agricultural University (KAU).
Now the University has seven colleges (four Agriculture, one Agricultural Engineering, one Forestry, one Co-operation Banking & Management), six RARSs, seven KVKs, 15 Research Stations and 16 Research and Extension Units under the faculties of Agriculture, Agricultural Engineering and Forestry. In addition, one Academy on Climate Change Adaptation and one Institute of Agricultural Technology offering M.Sc. (Integrated) Climate Change Adaptation and Diploma in Agricultural Sciences respectively are also functioning in Kerala Agricultural University.
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ThesisItem Open Access Morphometry and ageing of captive male asian elephants (Elephas maximus)(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 2003) Sasikumar, M; KAU; Francis, XavierThe collection of morphometric details from elephants of different age groups would enhance our biological understanding and management of this valuable species.. A total of fifty two clinically healthy captive male Asian elephants, varying in age, under excellent management, maintained by 'Guruvayoor Devaswom Board' were utilized for predicting body weight and height from body measurements as well as determination of age from physical features. For prediction equations several morphometric parameters were measured. All possible linear regressions of weight on one, two, three and four body measurements were calculated. The equations having highest coefficient determination value (R2) with least standard error of estimation was taken for predicting body weight and height in elephants. The data were also divided into age groups (Group I (Young ones; 0-20 years), Group 11 (Sub adults; 21-30 years), Group III (Adults; 31-40 years), and Group IV (0 Id adults; 41-70 years)) and all possible linear regressions were calculated for each group. The best prediction of body weight (kg) for all age groups (G I to G IV) was obtained based on two parameters; the chest girth (cm) and right forefoot circumference (cm). Single and also the combination of various parameters were used for the prediction' of body weight in different age groups. An equation to predict the height at the shoulders (cm) from right forefoot circumference (cm) for various age groups of elephants was also derived. Various parameters were correlated with age of the elephants and average values of these parameters were salculated for age approximation. The data were again divided into various age groups (Group A (Young ones; 0-20 years), Group B (Adults; 21-40 years), and Group C (Old adults; 41- 70 years)) and comparison of parameters between two age groups was done. The parameters such as depigmentation on the trunk, hair distribution, hollow on the temple region, width of the ear, circumference of tusk base and middle, and height at the shoulders had high correlation as well as significant difference in various age group comparisons. So, these parameters could be useful for age estimation in male elephants with more precision.ThesisItem Open Access Shelf life of irradiated rabbit meat underaerobic and vacuum packaging(Department of Livestock Products Technology, College of Veterinary and Animal Sciences, Mannuthy, 2009) Sonika, S; KAU; Kuttinarayanan, PPrevention of Food Adulteration Act (1954) as amended in 1998 has permitted irradiation at a dose rate of 2.5 to 4.5 kGy to control pathogenic microorganisms and to extend the shelf life of meat and meat products including poultry products. A study was conducted to evaluate the shelf life of irradiated rabbit meat under aerobic and vacuum packaging. The rabbit meat was prepared by slaughtering locally purchased rabbits under hygienic conditions and was packed in HDPE and PAPE packages at a rate of 120 g each. Half of the packets of aerobic and vacuum packaged samples were subjected to gamma radiation at 2.5 kGy at melting ice temperature and kept immediately at chiller temperature (1 to 4oC) and domestic refrigerator freezer (-6 to -8oC). Samples were analyzed for physical, physicochemical, microbiological, and organoleptic qualities on the day of preparation and on days 3, 5, 10, 15, 20, 25, 30, 40, 45, 50, 60, and 70 of storage or until spoilage, whichever was earlier. The samples were also analyzed for proximate composition on the day of preparation. The dressing percentage of the rabbits subjected to the study was 49.35 per cent. The keeping quality of the rabbit meat was 15 to 18, 17 to 19, 5 to 7 and 7 to 9 days in HDPE IR, PAPE IR, HDPE NR and PAPE NR respectively at chiller temperature. In freezer temperature it was significantly (P < 0.05) increased to 45 to 47, 47 to 49, 25 to 27 and 27 to 29 days in HDPE IR, PAPE IR, HDPE NR and PAPE NR respectively. Irradiation or packaging did not significantly (P < 0.05) affect fat, protein and ash composition but higher moisture percentage was observed in irradiated samples. Swelling of the collagen fibres was noticed in irradiated samples on histological examination. The physicochemical parameter, pH of irradiated and non-irradiated samples varied significantly (P < 0.05) on the day of preparation. On storage the pH values decreased uniformly. The WHC was significantly (P < 0.05) reduced in irradiated samples. The ability of the rabbit meat to retain its water decreased gradually on storage and a reduction of about 40 per cent could be noticed from the initial level. Drip loss was not significantly (P < 0.05) different on the day of preparation. Irradiation had a significant (P < 0.05) effect in enhancing the cooking loss whereas packaging had little effect. Both drip loss and cooking loss was increased significantly (P < 0.05) due to storage under chiller and freezer temperature. Irradiation had a significant (P < 0.05) role in increasing the TBARS value of rabbit meat. As the days of storage enhanced, the TBARS values were increased. Irradiation had a significant (P < 0.05) effect in reducing the TV in both type of packaging. As storage period enhanced, TV increased with significant (P < 0.05) changes among treatments. Irradiation had a beneficial effect on microbiological qualities of rabbit meat. There was a significant (P < 0.05) reduction of nearly three log in APC of irradiated meat from that of control. The irradiation of the samples both in HDPE and PAPE packaging significantly (P < 0.05) reduced the PC of meat on the day of preparation where as storage had significant (P < 0.05) effect in enhancing the microbial load of meat. The colour score was non-significantly (P < 0.05) higher in irradiated samples. The juiciness, tenderness and overall acceptability scores were improved significantly (P < 0.05) due to irradiation, where as flavour score was reduced. The sensory attributes were significantly (P < 0.05) reduced due to storage in all the treatment groups. The keeping quality of rabbit meat was significantly (P < 0.05) increased by irradiation both in chiller and freezer under different packaging. In addition irradiation could effectively control food borne illness by destroying the major pathogenic organism without affecting the sensory and nutritional quality of the product. Considering these advantages it can be recommended that packaging the meat in PAPE packages followed by low dose gamma irradiation and maintaining the cold-chain contribute to extended storage life of rabbit meat.ThesisItem Open Access Village level livestock and poultry production under the industrialization scenario(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 2007) Rajaganapathy, V; KAU; Francis, XavierAn in depth assessment and analysis of two villages, one an industrial area and the other an agrarian hamlet, was taken up. The effect of industrialization and pollution in village level livestock and poultry production and toxic heavy metals content as an indicator of pollution in water, soil, fodder and in biological samples were studied. Based on the observation and scientific validations, changes in livestock farming system and methodologies to alleviate the extent of pollution were sorted out. This study was conducted in Plachimada village - industrial area - in Perumatty Panchayat and in Nallepilly village- control area in Nallepilly Panchayat in Chittoor taluk in Palakkad district. A detailed survey of the existing husbandry systems was done in the selected study area using a schedule. Collection of samples of water, soil, fodder and biological samples milk, meat, egg, blood and dung samples were collected and examined from both industrial and control area. The samples were analyzed for presence of heavy metals like copper, cadmium, lead and arsenic by using Atomic absorption spectrophotometer. A detailed survey was done among fifty farmers from the Plachimada (industrial area) and Nallepilly (control area) villages respectively. The farmers were interviewed with a schedule and the data was obtained. The socio-economic status of the farmers indicated that the middle aged persons were more involved in the agricultural and animal husbandry activities. Most of the farmers had an average monthly income per family of Rs. 2000 in the study area. Cultivation of crops and plantations were less in both industrial and control area. The study revealed that majority of the farmers possessed dairy cattle with major source of income from livestock farming in both these study areas. Economic viability of rearing cattle was better in control area than that of industrial area. Most of the farmers surveyed stayed very near to the industry in the industrial zone. The study revealed that nearness of the industry to the grazing lands may be affecting their livestock farming system. The presence of heavy metals cadmium and lead in drinking water and soil samples of industrial area was more than that of the control zone and the WHO (1995) recommendations. The presence of copper and cadmium in meat samples was higher whereas cadmium and lead in blood samples of the industrial area was found more than that of the control zone and the permitted levels as per the WHO recommendations. The level of copper, cadmium and lead in fodder, milk, egg and dung samples of the industrial area was found more than that of the control zone and the permitted levels as per the WHO recommendations. This study aimed also to find out the relationship between water, soil, plant and animal system. Correlation of fodder and blood heavy metals with other biological samples was done in industrial area. Fodder lead showed a highly significant correlation with milk lead content. Correlation between fodder arsenic and milk arsenic concentration was also significant. Correlation between fodder cadmium with blood cadmium was significant. Correlation was observed between fodder lead with dung lead values. Correlation existed between blood copper with dung copper at a significant level. Similarly correlation of fodder and blood heavy metals with other biological samples was done in control area also. Blood and fodder cadmium was significant and positively correlated. Correlation of fodder lead with milk and dung lead were significant. Fodder arsenic and milk arsenic were significantly correlated. In blood the copper content of milk and dung showed a positive significant correlation. The heavy metals lead, cadmium, arsenic and mercury from industrial pollution are of high environmental concern due to their toxicity even at low concentrations. These metals may persist in the system for several days due to cumulative nature and may cause severe health effects in man and animals. Bioaccumulation of toxic heavy metals, especially lead, cadmium and arsenic in milk, meat and in egg have evoked great concern during the recent years. Heavy metals contaminants may enter the animal system through pollution of air, water, soil, feed polluted by industrial sources. From the present study it was found that the industrial area had contaminated water, soil, and fodder under observation. The heavy metal contamination was from copper, cadmium and lead whereas arsenic was almost within the permissible limits. The biological samples milk, meat, egg, blood and dung collected from the industrial zone were also contaminated with copper, cadmium and lead when compared with the control area samples. The level of heavy metals in the biological samples of industrial area was above the WHO permissible limits. Arsenic was present within the maximum permissible level in all the biological samples. It is also concluded that industrialization may add pollutants to the area thereby causing an indirect effect on livestock production systems and in turn to the human beings. The following recommendations may be suggested. 1. Monitoring the level of pollution in water, soil, plants and fodder crops, animals and in man in industrial zones at regular intervals. 2. Treatment of waste water and other discharges/effluents from industries with implementation of strict rules and regulations 3. Safe disposal of the discharges, effluents and waste materials from the industries and factories. Efficient waste management to be adopted. 4. To create awareness among farming community to adopt better management practices. 5. Encouragement of organic farming. 6. Recommendation of rearing indigenous animals and adoption of Mixed farming - system to improve economic status of farmers. 7. Phytoremediation may be done to decontaminate soil and water to reduce the soil heavy metal content. 8. Identify and growing of trees/ plants to reduce the level of toxic elements from the industrial zones.ThesisItem Open Access Reliability of united score card for crossbred dairy cows of Kerala(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 2010) Dhanya, K; KAU; Anil, K SThe research work was conducted to assess the reliability of Unified score card for cross bred cows of Kerala. One hundred and ninety six animals of University cattle farms of Mannuthy, Thumbunnuzhi and Thiruvazhamkunnu were selected for the study. As per the Unified score card by Purebred Dairy Cattle Association, the animals were judged for frame, dairy character, body capacity, feet• and legs and udder. The type components were again subdivided as described in the scorecard to improve the accuracy of judging score. The body measurements of individual animals like height at withers, body length, chest girth, height at withers, height at pins, length of quarter, width between angles of hook and slope of rump were taken. The animals were categorized into four age groups, four parities and three stages of lactation. The emphasis of each of the components of unified score card to milk production was compared and statistical analysis was carried out as per methods suggested by Snedcor and Cochran (1994). Effects of age, stage of lactation and parity on judging using Unified Score Card were worked out. The body measurements were also correlated with the score and milk yield. Age, parity and stage of lactation were found to be nonsignificant for final score. The scores of frame, dairy character and udder for different age groups showed no significant difference, whereas, scores of body capacity and feet and legs differed significantly. The scores of dairy character and body capacity differed significantly with parity. No significant difference was shown for scores of frame, feet and legs and udder. Frame was found to be positively correlated with other components, the least being with udder (r=0.127) and highest with feet and legs (r =0.254) which was highly significant (p<0.01). Dairy character was significantly correlated with body capacity (r=0.169) and feet and legs(r=0.2S4) in addition to frame. Feet and legs was the only component to which udder showed positive significant correlation (pAge was found to be not significant for lactation yield (P~O.OS). The means of lactation yield differed significantly for different parities. All the type components were found to be positively correlated with lactation yield, all being significant. The standardized partial regression coefficients were highly significant for dairy character, udder. and body capacity whereas non significant regression coefficients were obtained for frame and feet and legs. Udder depth was having the highest regression coefficient (~=0.312) which was highly significant (p<0.01). Regression coefficients were significant and positive for skin (0.229), withers (0.188), ribs (0.174) and thighs (0.162). Both age and parity had significant positive correlation on body weight. Body weight was significantly (p<0.0 1) correlated with lactation yield with r=0.244. Height at withers, length, hip width girth and height at hook showed significant difference with age (p:SO.OS).The height at pins and slope were found to be not affected significantly by age. All the measurements except slope were significant and positive in correlation with body capacity. All height measurements, length and girth was found to be positively correlated with frame (p<0.0 1). Final score was having significant positive correlation with all height measurements (p:SO.OS). It was concluded that although the score card was found to be reliable on the production of crossbred cows of Kerala, the emphasis placed on type components was not in full agreement with what was prescribed by the purebred Dairy Cattle Association Dairy Cow Unified Score Card. Hence it was suggested that more weightage could be given to body capacity and dairy character compromising weightage on frame and feet & legs which necessitated further studies in this regard.ThesisItem Open Access Comparative evaluation of porcine production performance in terminally sired and purebred progenies under different management conditions(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 2007) Murugan, M; KAU; Joseph, MathewA study was conducted to evaluate the production performance of terminally sired and purebred progenies under different management conditions. Twenty gilts were selected from Large White Yorkshire and also each combination of Large White Yorkshire x Landrace, Landrace x Desi and Large White Yorkshire x Desi . After attaining maturity, they were bred to terminal sire (Duroc). Large White Yorkshire was maintained as pure line. Litter performance of LWY and three breed combinations viz., D x (LWY x LR), D x (LR x Desi) and D x (LWY x Desi) were comparatively evaluated. Twenty four weaned piglets were selected at random from each genetic combination and they were divided into four groups having six animals in each group. Piglets T1 were fed with concentrate feed and T2, T3 and T4 from each genetic group were fed with left over food from hotels, restaurants, slaughter house waste and waste available from agricultural fields. In addition to this, T3 group were supplemented with inorganic minerals and T4 group were supplemented with organic minerals @ one per cent level on dry matter basis from third month to ten months of age. The crossbreds viz., D x (LWY x Desi) and D x (LR x Desi) had highly significant (P<0.01) difference in litter size at birth, litter weight at birth, birth weight, litter size at weaning, litter weight at weaning and weaning weight compared to LWY and D x (LWY x LR) pigs. There was no significant difference between LWY and D x (LWY x LR) ; D x (LWY x Desi) and D x (LR x Desi) pigs in all these litter traits. There were no significant differences (P>0.05) in maximum and minimum temperature and relative humidity between farm and field. There was no significant difference (P>0.05) in mean rectal temperature, pulse and respiration rate between treatments and genetic groups. Significant difference (P<0.01) were observed between morning and afternoon pulse and respiratory rates irrespective of treatment and genetic groups. At the time of feeding, majority of the pigs in different treatments and genetic groups showed eating greedily with drooling of saliva and ear biting, belly nosing and tail biting very frequently. Quantity of faeces voided had a highly significant (P<0.01) difference between treatment in all four genetic groups. LWY pigs voided significantly lesser quantity of faeces than other genetic groups within the treatment. Frequency of defaecation had no significant difference, between treatments and genetic groups. There were no significant differences (P>0.05) in the faecal cortisol level between the treatments and genetic groups of pigs. The proximate composition (percentage) of pooled swill feed samples are comparable to farm concentrate except ether extract (24.56; 6.05 and 4.13) which was very higher in swill feed. Total ash content was higher in the farm concentrate (10.91, 10.13; 6.61). Availability of minerals was higher in inorganic form compared to organic form. Mineral assay revealed that chicken waste showed higher levels of minerals followed by hotel waste and vegetable waste. There was no significant difference between genetic groups within the treatment in serum mineral concentration. The feeding system had highly significant (P<0.01) effect on the mineral concentration. It was highest in T4 followed by T3 and T1 and least in T2. It was comparable between T3 and T2. There was no significant difference in monthly body weights (kg), body measurements viz., body length, girth and height (cm), average daily weight gain and average daily feed intake (g) of pigs between concentrate (T1) and swill feeding (T2). T4 significantly (P<0.01) better than other treatment groups. T3 was significantly (P<0.01) better than T2 and T1. Crossbred pigs had significantly (P<0.01) higher monthly body weight, linear body measurements, average daily weight gain and average daily feed intake than LWY pigs within the treatment. Among the three crossbreds there was no significant difference observed in monthly body weight, linear body measurements, average daily gain and average daily feed intake except in concentrate feeding. In concentrate feeding, D x (LWY x Desi) crossbred consumed significantly (P<0.01) less feed than the other crossbred pigs. There was significant (P<0.01) difference in feed efficiency between T1 and T2. No significant difference was observed between T2, T3 and T4. There was no significant difference between LWY and crossbred pigs within the treatment. T4 attained significantly (P<0.01) higher slaughter weight (kg), hot carcass weight (kg) and carcass length (cm) than the other treatment groups. T3 group attained significantly (P<0.01) higher slaughter weight, hot carcass weight and carcass length than the T2 and T1 treatment groups. No significant difference between T1 and T2 was noticed. T1 had significantly (P<0.01) higher dressing percentage than other treatment groups. T1 had significantly (P<0.01) lesser back fat thickness. There was no significant difference between T2, T3 and T4 in dressing percentage and back fat thickness. T2 had significantly (P<0.01) lesser loin eye area and meat-bone ratio than other treatment groups and there was no significant difference between T1 and T3 and T4. Gut weight was significantly (P<0.01) lesser in T1 than other treatment groups. There was no significant difference between T2, T3 and T4. There was significant (P<0.01) difference between LWY and crossbreds in terms of slaughter weight, hot carcass weight, carcass length, back fat thickness and loin eye area, within the treatment. There was no significant difference noticed between dressing percentage, meat-bone ratio and gut weight within the treatment. Cost of production per kg live weight on feed basis was high in T1 followed by T4, T3 and T2. It was inferred that swill feed supplemented with minerals can increase the profit margin provided a cheaper substitute for the organic minerals presently available in the market is absolutely essential for the field fattener pig production. Swill feed was found to be equally effective compared to concentrate feed in promoting growth of the fattener pig production existing under field conditions. Growth performance and carcass characteristics can be improved by supplementation of minerals in the diet of fattener pigs. Crossbred pigs excelled over pure LWY in terms of post weaning growth performance and carcass characteristics under terminally sired pigs. The crossbreds viz., D x (LR x Desi) and D x (LWY x Desi) had better litter performance than D x (LWY x LR) and LWY pigs. Considering both litter performance and post weaning growth performance, the recommendation is that D x (LR x Desi) and D x (LWY x Desi) crossbreds are best suited for the field fattener pig production in the hot-humid climatic conditions.ThesisItem Open Access Draught Efficiency of Elephants in Timber Mills(Department of Livestock Production Management, College of Veterinary and Animal Sciences,Mannuthy, 2001) Prasad, A; KAU; Saseendran, P CSix elephants working in four different private timber mills in Trichur district were selected for the present study. Average weight of elephants estimated using formula was 4627.80 + 114.15 kg. Elephants consumed 213.00 + 3.338 kg roughages and 7.50 + 0.475 kg of concentrate. They obtained 9.721 + 0.837 kg dry matter, 3.613 + 0.075 kg DCP and 31.517 + 0.754 kg of TDN over and above maintenance requirement, which may be the amount of nutrient utilized for work performance. Elephants were engaged for three types of work in timber mills, carrying, moving/stalking and hauling timber logs. Mean draught developed during carrying was 445.095 + 22.448 kg. Elephant could be made to carry weights upto 20 per cent of their body weight on their tusk during carrying and stalking/moving timber. A new instrument called Elephant Draught Power Monitor was fabricated to measure the draught developed during hauling timber. A regression, Y = 0.7787 x – 100.69 (where Y is the draught developed and X is the weight of the log hauled) was developed from the measurements. The draught power estimated this equation was compared with the values obtained by the formula draught = load x CosƟ. It was assumed that the formula draught = load x CosƟ was not suitable for elephant draught power measurement. The average draught developed during hauling was 1779.391 + 130.386 kg. Highest maximum of weight that an elephant could be made to haul during instantaneous force development was 188 per cent of the body weight. Maximum limit of weight that an elephant could be made to haul during continuous work was 38 per cent of its body weight. Speed of work of elephants during carrying, moving and hauling was 1.333 + 0.075, 0.630 + 0.014 and 0.701 + 0.014 m/s respectively. Speed of work of elephants decreased with increase in weight of the log transported. The average horse power developed during carrying, moving and hauling were 7.116 + 0.106, 2,566 + 0.048 and 7.138 + 0.280 respectively. The average work output per day during carrying, moving and hauling were 1819.004 + 92.619 KJ, 179.718 + 5.955 KJ, 3375.373 + 16.885 KJ respectively. Maximum work output from elephant was obtained during hauling. Maximum work output (34 per cent) occurred during 8.30 am to 9.30 am in timber mills. Elephants were made to work minimum during 12.30 pm to 2.30 pm. Rectal temperature was identified as the most reliable physiological parameter which can be used as an indicator of fatigue. Maximum body temperature recorded during work was 1000 F. Maximum frequency of spraying of saliva during the entire study period was two/minute and maximum frequency of fanning of ears was 45/min. The value of rectal temperature when the elephants were fatigued was 98.60 F. Work may be stopped and elephant should be given rest before reaching this body temperature to avoid undue fatigue. Mechanised power which replaces elephant power in many timber mills has certain advantages. But use of elephant has got the advantage of utilization of renewable resources environmental friendliness and greater maneuverability during work.ThesisItem Open Access Factors influencing calf growth and mortality in field and organised farms(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 1994) Shaji, Antony .; KAU; Thomas, C KA study was undertaken to evaluate the system of calf raising in the field vis – a – vis that in organised farms, which included contemporary calves born in field and organised farms. Mavelikkara was chosen as the study area from where the experimental field calves were selected. University Livestock Farm, Kerala Agricultural and Dhoni Farm, KLD Board, Palghat were chosen to represent organised farms in the experiment. All the calves born in the experimental area or farms during a period of two months were included in the experiment. Calves were studied upto period of six months of age. It was observed that climatic conditions in general were similar at the three locations except that at ULF, Mannuthy relative humidity and hours of bright sunshine tended to be less than the other two locations. The male calves in the farms weighed heavier at birth and gained faster to weigh significantly more at the 12th fortnight compared to those in the field. There was no significant difference in birth weight of farm and field born female calves. However, those in the farms grew faster to weigh significantly heavier at 12th fortnight. When male and female calves in the farms and field were put together and tested at 1st, 6th and 12th fortnights, the calves in the farms weighed significantly heavier than those in the field at all stages. The daily weight gain during different fortnights was higher in the farm grown calves compared to their counterparts in the field. There was no significant difference in height of male calves in the farm and field in the 1st fortnight but was significantly higher in the farm grown calves in the 6th and 12th fortnights. There was no significant difference in the height of the female calves in the farms and field in all the three fortnights tested. Information with respect to girth showed similar trend as in the case of weight and height. In the first fortnight, the male calves in the farms measured significantly shorter in length than those in the field but by 6th and 12th fortnights, they measured significantly longer than male calves in the field. There was no significant difference in length of female calves in the field and farms during the time intervals tested. In the field, calves received generally an adequate amount of colostrum through suckling. Those in the farm were fed 2 – 2.5 kg colostrum daily from the pail. The interval between birth and first nursing varied from 15 min to 2 h in the field. In the farms, calves born during day time received colostrum within half an hour, while those born in night received colostrum the next morning. Highest daily gain and lowest mortality was seen in calves fed colostrum within 15 minutes. It was observed that the quantity of milk available to female calves in the field was comparable to that in the farms. Male calves in the field received much lesser quantity. Female calves received more quantity of concentrates compared to males except in the early fortnights. Maximum daily gain of calves was observed in sheds with concrete flooring and tiled roofs. Monthly deworming was practised upto 12 months of age in the two farms studied. In the field all calves were dewormed during the 1st month only. Thereafter, female calves were given more frequent deworming treatment. Vaccination against Foot and Mouth disease was carried out in the farms but not in the field. Good hygiene and daily grooming increased the daily gain of calves. Better growth was seen when the animals were looked after by men than women. Average dairy awareness was observed in 90 per cent of the farmers. Daily gain of calves increased with increased dairy awareness. People with high school level education maintained their calves better than those with higher or lower levels of education. Calves grown by agricultural labourers seemed to have lower weight gain. Calves reared in larger units of land had a greater daily weight gain. The mortality rate among calves was 14 per cent in the field compared to 8.5 per cent in the farms. Mortality rate of 66.6 per cent was seen no colostrum was fed. There was no mortality among calves fed colostrum within 15 minutes. Male calves had higher mortality rate than female calves. Higher mortality rate was observed in calves born to first calvers. In field mortality was higher in 1st and 5th month of age. Mortality rate was lower when calves were looked after by men compared to women. The lowest calf mortality rate was observed among calves owned by those who had high school level education. Mortality rate among calves seemed to decrease with increasing dairy awareness of owners. Mortality rate of calves was highest in shed and premises with poor hygiene (50%) followed by medium hygiene (11.11%) and good hygiene (10.5%). Similarly daily grooming seemed to reduces mortality rate (11.9%) compared to weekly grooming (25%). At the end of 6 months, 92.85 per cent of the female calves were retained by the farmers compared to only 36.36 per cent male calves, clearly pointing towards the greater future economic utility of the former.ThesisItem Open Access Waste management system evaluation in commercial dairy farms(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 2009) Sany Thomas; KAU; Joseph MathewThe present study on “Waste management system evaluation in commercial dairy farms” was conducted to assess the usefulness of the different waste management methods adopted in dairy farms of Kerala. Study area comprised of Thrissur, Malappuram and Ernakulam districts and adjoining area of central and northern Kerala. Forty five dairy farms were identified and visited in and their profile of the study area .Data regarding general outlay of the farms selected management practices in the farm, livestock details and existing waste management methods in the farms were collected and studied. The dairy farms under study were classified based on the animal holding capacity as those with less than six animals (class 1), 6-20 animals (class 2), 21-50 animals (class 3)and 51-100 animals (class 4), and above 100 animals (class 5). Among the 45 farms under study, four per cent belonged to class 1, forty nine per cent belonged to class 2, thirty five belonged to class 3, six per cent farms came under the classes 4 and 5.There was no commercialization of waste management methods adopted by the farms. The majority farms had dung pit as waste disposal method and no regularity in dung removal from pit, it was upon demand. Regarding the soil quality, there was no significant difference in the soil nutrients quantity between different groups of farms. Regarding water quality, the water samples collected from the nearby water bodies were inferior in quality in terms of microbiology and BOD. Air quality stands below the permitted standards in all groups of farms. Intervention by the government, local bodies and scientific institutions must be made in this area supporting the farmers to develop awareness in this serious issue and also providing necessary technical and financial support for the farmers to construct proper waste management systems such as compost unit as well as biogas plants because they provide a support for the most efficient waste management system in a dairy farm proving that waste is wealthThesisItem Open Access Medroxyprogesterone acetate as an aid to birth control programme in stray dogs(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 2005) Deepak Mathew, D K; KAU; Joseph MathewThe utility of Medroxyprogesterone acetate as an aid in the birth control programme of stray dogs was studied. Eighteen early proestrus bitches were randomly allotted to three equal groups (Group A Group B and Group C). Group A animals were administered with a single subcutaneous injection of 50 mg medroxyprogesterone acetate. Group B animals were administered medroxyprogesterone acetate orally at the rate of 10 mg per day for four days followed by 5 mg per day for another 12 days starting from the end of anoestrus. Six bitches of Group C acted as control animals. All animals in Group A and Group B responded to the treatment though one animal in Group A had returned to cycle in about 50 days. Reproductive cycle was controlled in all six animals of group A at a mean of 3.17 days and a mean of of 2.67 days in group B. Group A animals had a mean duration of control of 83.3 days while in group B it was 90 days. Vulval edema, vulval discharge, tail deviation reflex and interest in male decreased following treatment in Groups A and B while it seemed to be not changed or high in Group C animals. Detailed vaginal cytology was studied using Wright- Giemsa's stain. Cellular changes was characterized by a change from predominance of parabasal cells following treatment in Groups A and B while changes characteristic of oestrus cycle occurred in the control animals. There was significant difference in the mean percentage of parabasal cells between Groups A and B after treatment and during different stages of the oestrus cycle of the Group A up to end of dioestrus. Serum progesterone was estimated in all animals at fortnightly intervals. Animals in group A, B and C showed mean serum progesterone concentrations of 0.53 ng/ml, 0.57 ng/ml and 0.45 ng/ml during the beginning of proestrus. The mean progesterone in serum following treatment elevated in Group A to 27.83 ng/ml, while it maintained a low level of 0.55 ng/ml in group B and had a value of 4.43 ng/ml in group C which indicated oestrus phase. The progesterone level reached maximum concentration of 31.17 ng/ml on day 42 in group A and 49.00 ng/ml during dioestrus in group C. The values remained low in group B. Towards the end of experiment all animals had basal concentration of progesterone. It is concluded that reproductive control can be achieved effectively in bitches treated with medroxyprogesterone acetate by both oral and parenteral routes. Oral administration demand less technicalities and hence is more suitable for use in the field.