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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 Effect of plane of feeding during pre-partum and lactating stages on mothering ability and subsequent conception in sows(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 1992) Joseph Mathew; Kurien ThomasThirty six pregnant gilts were randomly maintained on three different planes of feeding with respect to crude protein (CP) and digestible energy (DE) viz. (i) NRC recommended levels as control (ii) a high plane of 10% increase of CP with respect to NRC level and (iii) a low plane of 10% decrease of CP and DE with respect to NRC – at four stages A, B, C, and D which represented the periods 56 – 83 days of gestation, 84 days to farrowing, farrowing to 28 days and 29 to 56 days post – partum respectively. Shifting of plane of feeding from low to high plane and vice versa while NRC level treated as control, resulted in nine treatment groups each having four experimental units. The body weight gain/ loss of the dam in stages A and D, live litter size and weight at birth, litter size and weight at weaning, parturient and suckling behaviour – expressed as a score – feed consumption of sow and the litter and the overall mothering ability of the sow expressed as composite sow index were beneficially influenced by a high plane of feeding when compared to NRC, while the low plane of feeding was significantly (P < 0.01) poor with respect to almost all the above traits. However, the total litter size at birth, average birth weight of live piglets, feeding and post – weaning oestrus behaviour – expressed as scroes - and conception rate were not significantly affected by plane of feeding. Overall results suggested that a switch – over to high plane of feeding at 84 days of gestation till weaning is most efficient with respect to litter output, economy and post – weaning conception.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 Comparative draught capacity of cattle and buffaloes(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 1994) Anil, K S; KAU; Thomas, C KThe draught performance of Kangayam bullocks were compared with that of graded Surti buffaloe bullocks under the agro climatic conditions of Kerala with a hot humid tropical climate Two pairs of adult Kangayam bullocks and two pairs of adult graded Surti buffaloe bullocks were used for ploughing both dry land and wet land at the rate of four hours a day during the summer season Physiological responses like respiratory rate pulse rate and rectal temperature and haemotological parameters like haemoglobin per cent erythrocyte sedimentation rate packed cell volume lactic acid and plasma bicarbonate were estimated before work immediately after work and after one hour of rest after work The dry matter intake and water intake on days of work and on days of no work were also measured and compared Other parameters like the area ploughed in one hour average speed of walking stride length and traction force developed during ploughing were also compared between the two species The buffaloe bullocks had significantly lower physiological responses before the start of work when compared to that of indigenous bullocks As a result of work the physiological responses increased significantly in both species The values were higher for buffaloes during dry ploughing The physiological responses including rectal temperature of buffaloes increased to a level indicative of distress due to heat stress There were also other signs of distress like frothing and drooling of saliva and protrusion of tongue But during wet ploughing the responses were not so marked in case of buffaloes and they did not show any apparent signs of distress The physiological responses decreased but did not reach the pre-exercise values after one hour of rest The haemoglobin per cent of blood packed cell volume and plasma bicarbonate content decreased significantly in cattle and buffaloes during dry and wet ploughing The erythrocyte sedimentation rate and blood lactic acid content showed a significant increase as a result of work One hour of rest was not sufficient to bring these parameters to pre exercise values Buffaloes consumed more DM when expressed in grams per kg metabolic body size Both species consumed more on days of no work The difference was more pronounced in case of buffaloes The water intake expressed as ml/kg metabolic body size was significantly higher for buffaloes both on days of work and on days of no work In both the species the water intake remained similar in days on which they were used for work and they were not used Kangayam bullocks ploughed significantly more area per unit time than graded Surti buffaloe bullock Cattle developed significantly more speed than buffaloes during dry ploughing But during wet ploughing the speed was almost same in both species Cattle showed more stride length during dry and wet ploughings than buffaloes But during wet ploughing the difference was negligible There was no significant difference in the traction power developed between cattle and buffaloes during dry or wet ploughings But both species developed higher horse power during wet ploughing Overall the results indicate that during summer in a hot humid tropical environment Kangayam bullocks can be used for dry as well as wet ploughings without any apparent ill effects Graded Surti buffaloe bullocks are on par with Kangayam bullocks under wet-ploughing However they seem to be under severe heat stress and also their work output inferior when used for a continuous 4 hour period of dry-land ploughing under similar climatic conditionsThesisItem Open Access Managemental effects of synchronization of oestrus in goats(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 1993) Shivkumar, S; KAU; Thomas, C KAn experiment was conducted to study the managemental effects of synchronization of oestrus in goats using parentral administration of PGF2 alpha, on a flock of Malabari, Malabari x Saanen and Malabari x Alpine goats maintained at the Agricultural University Goat Farm, Mannuthy. Forty cyclic goats were selected in pairs on the basis of similarity in genetic group, body weight and age. The does from each pair were allotted to two groups at random. Out of these one group at random formed the treatment group and the other control. The goats in the treatment group were given two injections of 10 mg (I/M) each of PGF2 alpha separated by 11 days, in two batches of 10 goats each. The animals were mated at the synchronized oestrus following the second PG injection. The does in the control group were mated as and when they came to oestrus. Heat detection in the does was carried out by parading the vasectomised bucks twice daily and by observing the behavioural manifestations of oestrus. The results and conclusions of the study are given below. The PGF2 alpha treated goats showed 75 and 100 per cent oestrus synchrony after a mean interval of 45.93+2.19h and 48.38+2.06 h following the. first and second injection of PGF2 alpha respectively. Of the various signs of oestrus only rapid waving of tail in the presence of male and vaginal mucous discharge were observed in all the does in oestrus. Various signs of oestrus behaviour including receptivity was found to be more pronounced in oestrus synchronized does using PGF2 alpha than in the controls. Mated does showed pricking of ear and arching of back as post coital reactions. Conception rate following mating at the first oestrus was better in the treatment group (85%) than the controls (75%). Body weight changes during pregnancy was not found to be affected by synchronization of oestrus with prostaglandin F2alpha. Mean gestation period in the treatment group was ,148.14+0.80 days compared to 143.88+0.78 days in the controls, the difference being significant (P < 0.05). Overall 61.3 per cent of the parturitions were observed to occur between 0600 to 1800 hours. Maternal behaviour studies showed no significant difference between the does in the control (av. score 3) and treatment group (av. Score 2.8). Multiparas were observed to possess better maternal Instinct than the primipara does. The new born kids attempted to stand up within 8 to 15 minutes and 68 per cent of them suckled from the dam's teat within one hour of birth. In the control group 88 per cent of the kiddings were singles and 11.77 per cent twins compared to 85.71 per cent singles and 14.29 per cent twins in the treatment group. Comparing the growth of kids with respect to body weights and body measurements at fortnightly intervals from birth to 90 days of age, showed that the growth rate of kids born from synchronized oestrus was similar to that of control kids. Suckling behaviour in the kids revealed that the overall mean duration of suckling was 2.61 minutes and mean rate of suckling was 49.65 g per minute. It was observed that the rate of butting and intensity of tail wagging increased as the flow of milk from the teats got reduced. The mean daily milk yield from first to thirteenth week of lactation in the control and treatment g roups were found to be 0.509+0.015 kg and 0.493+0.014 kg respectively. Man nours requirements to look after the does and raising the kids born to tham to 90 days of age in both the control and treatment group, revealed that there was a man hour saving of 12.3 per cent in the oestrus synchronized group (treatment) than the untreated controls.ThesisItem Open Access Evaluation of the feeding value of tea waste for milk production in cows(Department of Dairy Science, College of Veterinary and Animal Sciences, Mannuthy, 1978) Prasad, V; KAU; Subramanyam, MAn investigation was carried out to find out the feeding value of tea waste for milk production in cows. A total of nine Jersey x Sindhi crossbred cows were divided into three groups of three animals each and fed tea waste in their concentrate ration at 0, 15 and 25 per cent levels. A switch – over design was used for the experiment.ThesisItem Open Access Effects of weight at weaning and plane of feeding on the onset of puberty in gilts(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 1993) Lalnuntluangi, Hmar; KAU; Rajagopalan, T GThirty six Large White Yorkshire weanling females of 8 kg (light weaners) and 12 kg (heavy weaners) were randomly maintained on three different planes of feeding with respect to crude protein (CP) and digestible energy (DE) viz. (i) NRC recommended levels as control, (ii) a high plane (HP) of 10 per cent increase of CP and DE with respect to NRC level and (iii) a low plane (LP) of 10 per cent decrease of CP and DE with respect to Nrc from weaning to puberty. The fortnightly and daily weight gain was higher in pigs fed NRC diet. The heavy weaners were having a better growth rate, daily gain, higher feed intake and attained puberty earlier than the light weaners, but the feed conversion efficiency was lower than light weaners. The heavy weaners on high plane attained puberty earlier than animals on NRC or low plane diet. In light weaners, NRC group attained puberty earlier than HP and LP group. In both heavy and light weaners, LP group attained puberty later than the other treatment groups. Plane of feeding has no significant effect on puberty attainment, oestrous cycle length and duration of pubertal cestrus but weight at weaning has a significant effect on the onset of puberty. Oestrous hehaviour expressed as scores was significantly affected by plane of feeding. The animals on high plane diet consumed less feed in both heavy and light weaners and have the highest feed conversion efficiency. The light weaners consumed feed comparatively lower and have better feed conversion efficiency than heavy weaners. The overall result suggested that heavy weaners on high plane diet are most efficient in feed conversion efficiency, economy and attainment of puberty at younger age. On the whole, the heavy weaners are more economical for replacement stock than light weaners.ThesisItem Open Access Draught potentialities of indigenous and cross-bred cattle(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 1988) Sreekumar, D; KAU; Thomas, C KThe draught performance of Bos indicus x Bos Taurus crossbred bullocks was compared with that of bullocks belonging to a South Indian draught breed (Kangayam type) under the agro - climatic conditions of Kerala, with a hot – humid tropical climate. Two pairs of adult cross – bred bullocks (Jersey x Red Sindhi) and two pairs of adult indigenous bullocks (Kangayam type) were used for ploughing on dry land for 4 hours and 5 hours continuously on alternate days. Physiological responses like respiratory rate, pulse rate and rectal temperature and haematological parameters like haemoglobin per cent, erythrocyte sedimentation rate, packed cell volume, lactic acid and plasma bicarbonate were estimated before work, immediately after work and after 1 hour of rest after work. The dry matter intake and water intake on days of work and on days on which no work was done were measured and compared. In order to evaluate the relative efficiency of work, the average speed of walking and the total area ploughed in 1 hour were compared. The cross – bred bullocks had significantly higher physiological responses even before the start of work. As a result of work the physiological responses increased significantly and during rest, the values declined but did not reach the pre – exercise values after one hour rest. The haemoglobin per cent of blood, packed cell volume and plasma bicarbonate content decreased significantly and the erythrocyte sedimentation rate and blood lactic acid content showed a significant increase as a result of work. One hour of rest was not sufficient to bring these parameters to pre – exercise values. The indigenous bullocks consumed more dry matter per metabolic body size than the cross – breds. However, the total dry matter intake by the indigenous bullocks was less due to smaller body size. It was found that work had no effect on dry matter intake as the dry matter intake of indigenous and cross – bred bullocks on days of work and on days on which no work was done was almost similar. The cross – breds consumed more water per day matter per metabolic body size on days of work and no work. The total area ploughed by indigenous bullocks in 1 hour was significantly more than the cross – bred bullocks. Also, the average speed of walking of indigenous bullocks was greater than that of the cross – breds. The enhanced physiological reactions in the cross – breds even before the work pointed to the fact that they were under some degree of thermal stress due to the hot – humid climate. Exercise (work) increased the stress and widened the gap between the cross – breds and indigenous bullocks. The lower total feed intake and greater speed and more area ploughed per unit time make the indigenous Kangayam type bullocks a more economical animal. Their higher feed intake and lower water intake per unit metabolic size indicates that they can better sustain energy supply to the tissues for work and manage under lower water availability. Coupled with these advantages, their greater heat adaptability make them a superior draught animal.ThesisItem Open Access Effect of stocking density on the performance of growing pigs(Department of Livestock Production Management, College of Veterinary and Animal Sciences, Mannuthy, 1992) Leena, K; KAU; Rajagopalan, T GThe objectives of the study were, to find out the minimum floor space requirement without affecting performance in growing pigs, to assess change in the pattern of behaviour in pigs due to change in stocking rates and to find out whether there is any effect of reduction in floor space upon the growth and carcass quality of pigs. Twenty seven large White Yorkshire weanling female pigs having an average body weight of 8.5 kg and 56 days of age were assigned at random to three treatment groups. In the first (control) group of six pigs, each received lm2 of floor space (as per ISI specification) while in the second group there were nine pigs and in the third group 12 pigs received 0.75 m2 and 0.5m2 of floor space per pig respectively. Animals were provided with concentrate and allowed to consume as much as they could within a period of one hour. Total weight gain of 58.5 kg, 56.22 kg and 55.46 kg were noticed in control group, group two and group three respectively. Variations of average fortnightly body weight of pigs due to stocking density were not found to be significant. Similar trend were noticed in the case of height, length and girth. When the feed conversion efficiency was taken as whole, it was found to be highest in group III (3.746 + 0.667) and lowest in group I (3.960 + 0.864). The animals of group II were showing feed conversion efficiency between group I and group III (3.798 + 0.744). Aggressive behaviour was measured by counting the number of threats and number of ear – biting incidence. These parameters were found to be highest at higher stocking densities. When the dressing percentage with head is taken and compared to per unit weight, no apparent difference was observed between the groups (1.096; 1.360 and 1.118 per cent respectively for group I, II and III). Similar was the trend in half carcass weight, weight of the ham, carcass length and eye muscle area. The back fat thickness was found to be similar in group I and III (2.41 cm and 2.388 cm respectively) and less in group II (1.499 cm). From the experimental result to significant difference could be observed in the performance of those pigs having a floor space as per ISI specification and the one where the floor space reduced to the extent of 50 percentage.
