Browsing by Author "Venkataramanan, R."
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OtherItem Open Access Age at First Lambing and Lambing Interval in Nilagiri and Sandyno Ewes(TANUVAS, Chennai, 2011-12) Iyue, M.; Venkataramanan, R.; Kumar, R. Anil; Sreekumar, C.ArticleItem Open Access ANTHELMINTIC RESISTANCE STATUS IN STRONGYLES OF MADRAS RED SHEEP IN AN ORGANIZED FARM(TANUVAS, Chennai, 2015-09) Vijayasarathi, M.K.; Sreekumar, C.; Venkataramanan, R.; Raman, M.; TANUVASThe present study was carried out to detect the status of anthelmintic resistance in strongyle helminths of Madras Red sheep in an organized farm.ThesisItem Open Access APPLICATION OF HIDDEN MARKOV MODELS AND HIDDEN SEMI MARKOV MODELS AS DIAGNOSTIC AID IN MASTITIS IN COWS(TANUVAS, Chennai, 2017) Saifudeen, Safeer M; Selvam, S.; TANUVAS; Venkataramanan, R.; Pandian, A. Serma SaravanaMastitis is the most important and expensive disease of dairy industry. Contagious mastitis can be divided into three types, clinical mastitis, subclinical mastitis and chronic mastitis. Hidden Markov model is a doubly stochastic process with an underlying stochastic process that is not observable (it is hidden), but can only be observed through another set of stochastic processes that produce the sequence of observed symbols.ArticleItem Open Access Bleeding Hoof Wound and its Clinical Management in a Pony(INTAS Polivet, 2012) Venkataramanan, R.; Sreekumar, C.; TANUVASA pony was reported with sharp metal sheet induced traumatic oblique cut at the hoof region. On examination, it was observed that there was severing of three arteries of hoof. Arterial bleeding can be fatal and requires ligation. Being a hard surface, the case was managed clinically with thermocautery and pressure bandage application. The wound and arteries were completely restored and healed by 20th day. The animal resumed normancy.ArticleItem Open Access Bovine Traumatic Reticuloperitonitis (TRP) and its Surgical Management - A Report of two cases(INTAS Polivet, 2010) Venkataramanan, R.; Selvan, P.; Sreekumar, C.; TANUVASTraumatic reticuloperitonitis (TRP) is an economically important disease affecting mostly cattle. The disease is caused by accidental ingestion of sharp foreign bodies. The signs of this disease depend on the site of reticular perforation and lesions caused by further migration of the foreign body. Some of the usual sequelae of TRP are peritonitis (acute, chronic, local or diffuse), pericarditis and diaphragmatic hernia while hepatic abscess, splenic abscess, pleurisy etc. are less common. Rupture of left gastro-epiploic artery and abscess, rupturing, discharging the foreign body to the exterior are rare and unusual (Roth and King, 1991; Radostits et al., 1994). Two cases in which the foreign bodies were discharged to the exterior are reported here.OtherItem Open Access Canine Helminthoses Affecting Sheep in an Organized Sheep Farm(TANUVAS, Chennai, 2011-12) Krishnakumar, S.; Sreekumar, C.; Venkataramanan, R.; Kumar, R. Anil; Prema, N.; Iyue, M.ArticleItem Open Access Canine metacestodes in an organized sheep farm(2017) Subbiah, K.; Sreekumar, C.; Venkataramanan, R.; Anil Kumar, R.; Prema, N.; Selvaraj, J.; TANUVASInfections with the larval stages of canine tapeworms were recorded in sheep belonging to an organized sheep farm. Asymptomatic presence of Cysticercus tenuicollis, metacestode of Taenia hydatigena, in the peritoneal cavities of sheep, was encountered during necropsy. Deaths in lambs due to peracute and subacute hepatitis cysticercosa were recorded. The fact that C. tenuicollis lacks the characteristic armed rostellum during the early stages should be taken into account during diagnosis of peracute cysticercosis. During the lean months of winter, overwhelming chronic infection with 53 cysts of C. tenuicollis resulted in death of a hogget. Non-viable, calcified cysts, apparently those of C. ovis (intermediate stage of T. ovis), were documented in the heart muscles of four ewes. Death following cerebral signs of a ewe was attributed to the presence of a single Coenurus cerebralis cyst (larval stage of T. multiceps) in the occipital region of the cranial cavity. The presence of Coenurus acquires public health importance owing to its zoonotic potential. Hydatid cysts were not recorded in any of the sheep. The study shows the importance of restricting access of canids in sheep farms and pastures. Removal of fecal pats of domestic dogs from areas grazed by lambs will prevent fatal cysticercosis caused due to ingestion of gravid proglottids.OtherItem Open Access Carrot Whole Tops: An Economic and Nutritious Unconventional Green Fodder(TANUVAS, Chennai, 2011-12) Venkataramanan, R.; Gunasekaran, S.; Sreekumar, C.; Balakrishnan, V.; Iyue, M.ArticleItem Open Access Contagious ecthyma outbreak among goats at Nilgiri hills(2017) Balakrishnan, S.; Venkataramanan, R.; Ramesh, A.; Roy, Parimal; TANUVASContagious ecthyma is a highly contagious viral disease of sheep and goats, caused by Parapoxvirus. In the present outbreak over a range of 3 km radius in a hamlet near Ooty town in the Nilgiris hills, a total of 174 out of 194 non-descript goats were clinically affected with the symptoms of pyrexia (40°C), anorexia, depression, proliferative scab lesions on the skin around the mouth, oral commissures and nostrils.OtherItem Open Access Correlation among Body Weight Traits and Their Influence on Ostrich Chick Survivability(Indian Poultry Science Association, 2016-09) Selvan, S.T.; Venkataramanan, R.; Umamaheshwari, S.; Gopi, H.ArticleItem Open Access Dermatophytosis and its Therapeutic Management in a Pup(INTAS Polivet, 2013) Venkataramanan, R.; Sreekumar, C.; Gopi, H.; TANUVASThe diagnosis and treatment of dermatophytosis in a Labrador retriever puppy was successfully attempted with emphasis on differential diagnosis from other forms of dermatitis.ArticleItem Open Access Designing Effective and Practical Immunization Programs for Pups(INTAS Polivet, 2009) Kumar, S. Krishna; Venkataramanan, R.; Anilkumar, R.; Sreekumar, C.; Thangavel, K.; TANUVASVaccination is the process by which the response of an animal’s immune system to an infectious disease is stimulated by a method, other than developing and living through the disease. This process attempts to render the animal resistant to that disease upon future exposure. Historically, the vaccination process was an easy one. With the emergence of many new vaccines in the market and the realization that vaccination is not risk free, the process is no longer so simple (Rynders, 2005). The present paper discusses the different vaccines available for canines, their advantages, and regimen to be followed.ArticleItem Open Access DIRECT AND MATERNAL COMPONENTS OF VARIANCE FOR RELATIVE GROWTH RATE IN NILAGIRI AND SANDYNO SHEEP(Indian Society for Sheep and Goat Production and Utilization, 2015-08) Venkataramanan, R.; Subramanian, A.; Sivaselvam, S.N.; Sivakumar, T.; Sreekumar, C.; Iyue, M.; TANUVASA study was conducted to estimate genetic parameters of relative growth rate (RGR) and explore the possibility of its use as a selection criterion in Nilagiri and Sandyno sheep. RGRfor the pre-weaning (birth to 3 months, n=6504) and post-weaning (3-6, 6-9, 9-12 and 3-12 months, n=4309, 3267, 2978 and 3257, respectively) periods were studied. The maximum RGR was noticed for the pre-weaning period and least during the latest age interval from 9 to 12 months. The ability of the trait to adjust for body size was evident from the effects of litter size, breed and age of dam on the trait. An animal model, including maternal effects was used to obtain REMLestimates of (co)variances. Maternal genetic effects and inbreeding were not significant for RGR at any of the age intervals. Moderate estimates of heritability were obtained for pre-weaning RGR, with values of 0.126 and 0.103 for Nilagiri and Sandyno sheep, respectively.Among the post-weaning RGR, the age interval 3-6 months showed moderate value (0.140) in Nilagiri sheep. Post-weaning RGR for other intervals in Nilagiri and all intervals in Sandyno sheep showed negligible to low heritability estimates. The genetic correlations between pre-weaning RGR and body weight traits were high and positive in Nilagiri sheep. The estimates for the breed were found to decrease with age. Moderate heritability for pre-weaning RGR and high genetic correlation of the trait with other body weight traits provide scope for indirect selection using the trait in Nilagiri sheep. The result of the study supports the fact that RGR is able to adjust growth curve in such a way as to improve growth without affecting mature body size.ArticleItem Open Access DIRECT AND MATERNAL GENETIC COMPONENTS OF VARIANCE FOR GROWTH TRAITS IN NILAGIRI AND SANDYNO SHEEP OF SOUTH INDIA(Indian Society for Sheep and Goat Production and Utilization, 2015-10) Venkataramanan, R.; Subramanian, A.; Sivaselvam, S.N.; Sivakumar, T.; Sreekumar, C.; Iyue, M.; TANUVASThe Nilagiri sheep is known for its prolificacy and adaptability to high altitudes of the Nilgiri hills. This breed was crossed with exotic sheep such as Rambouillet and Merino to develop a new synthetic sheep called Sandyno at Sheep Breeding Research Station, Sandynallah (Tamil Nadu). Both these breeds have been maintained as closed flocks in this station and growth data from 1992 to 2011 were utilized to estimate direct and maternal genetic (co)variance components for various growth traits viz., weight at birth (BW), 3 (3W), 6 (6W), 9 (9W), 12 (12W) and 18 (18W) months of age.An animal model including maternal effects was used to obtain restricted maximum likelihood estimates of (co)variances. The h values for BW, 3W, 6W, 9W, 12W and 18W were 0.140, 0.130, 0.074, 0.168, 0.129 and 0.166, respectively in Nilagiri sheep and 0.147, 0.114, 0.098, 0.141, 0.144 and 0.115 in Sandyno sheep. In Nilagiri sheep, maternal influence was significant (P<0.05) forBW, 3W, 6W and 9W and the maternal heritability values for the traits were 0.211, 0.050, 0.126 and 0.098, respectively. In Sandyno sheep, the maternal heritability values were significant (P<0.05) for BW, 3W, 6W, 9W and 18W with values of 0.285, 0.035, 0.054, 0.058 and 0.110, respectively.ArticleItem Open Access Early growth and survivability of ostrich chicks(Indian Poultry Science Association, 2016-12) Umamaheshwari, S.; Selvan, S.T.; Venkataramanan, R.; Gopi, H.; TANUVASA study was undertaken in 63 ostrich chicks hatched at PGRIAS, Kattupakkam to assess their survivability and growth pattern. The average body weight of ostrich at hatch, 7th and 15th day post-hatch were 827.63, 725.58 and 1527.59g, respectively. The growth pattern differed between the dead and alive groups. Body weight at 2, 4, 6, 8, 10 and 12 days of age were 769.41, 755.05, 779.00, 850.82, 991.23 and 1167.79 g, respectively in the survived group and those for the dead group were 707.83, 657.83, 607.45, 582.82, 579.50 and 562.00g, respectively. Growth study indicated a distinct positive growth in survived and negative growth trend in dead groups. The hatch weight and weight at 1st day were similar between these two groups and change in body weight was noticed from 2-12 days of age in both survived and dead groups. The study revealed that the body weight of ostrich chicks experienced a dip from day one to 7th day of age at an average of -15.30 g and thereafter the body weight increased gradually at an average of 36.57g/day. The growth pattern in dead chicks indicated absence of body weight gain after first week of age. It is concluded that recording the body weight during first two weeks of age acts as an excellent and inexpensive tool to predict the survivability in ostrich chicks.OtherItem Open Access Effect of Genetic and Non-genetic Factors on Semen Production Traits in Crossbred Holstein Friesian Bulls(TANUVAS, Chennai, 2013-06) Gopinathan, A.; Sivaselvam, S.N.; Karthickeyan, S.M.K.; Venkataramanan, R.ArticleItem Open Access Effect of inbreeding on pre-weaning and sow performance traits in Large White Yorkshire pigs(2018-06) Gowrimanokari, K.V.; Thiagarajan, R.; Venkataramanan, R.; Gopi, H.; TANUVASThe present study was undertaken to study the effect of inbreeding on pre-weaning and sow performance traits of Large White Yorkshire pig population. Data on 7596 Large White Yorkshire pigs maintained at PGRIAS, Kattupakkam from the period of 1990 to 2015, were subjected to least square analysis to study the effect of inbreeding and other non-genetic factors viz., period, season, sex, parity, litter size at birth on various traits using general linear model. Inbreeding was calculated as Wright’s path co-efficient. The mean inbreeding co-efficient of LWY population studied was 2.45 %. Among 7596 animals in the pedigree, 2088 were inbred and the range of individual inbreeding co-efficient (F) was from 0 to 37.5 per cent. The average inbreeding in the inbred population was 8.92 %. The effect of inbreeding was found to be significant for weaning weight, pre-weaning average daily gain and litter weight at weaning, where the traits were found to increase with inbreeding (enhancement). The absence of depressive effect on fitness traits observed in the present study could be due to lower levels of inbreeding, which was possible due to periodic introduction of breeding animals and planned mating.ArticleItem Open Access EFFECT OF SEASON ON REPRODUCTIVE PERFORMANCE OF OSTRICH (Struthio Camelus)(TANUVAS, Chennai, 2017-05) Pandian, C.; Selvan, S.T.; Venkataramanan, R.; Gopi, H.; TANUVASEffect of season on reproductive performance of ostrich was carried out at the Post Graduate Research Institute in Animal Sciences, Tamil Nadu Veterinary and Animal Sciences University, Kattupakkam, Kanchipuram district in Tamil Nadu during 2014 - 2015.