Browsing by Author "Ravimurugan, T."
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ArticleItem Open Access BODY MEASUREMENTS AND BODY WEIGHT OF RAMNAD WHITE SHEEP(Indian Society for Sheep and Goat Production and Utilization, 2009-04) Ravimurugan, T.; Devendran, P.; TANUVASRamnad white is a popular mutton type sheep found in southern part of Tamil Nadu. Body colour is predominantly milky white with black patches in the extremities. Males have thick curling horns and females are polled. Sheep of this breed are medium in body size and well known for their tolerance to hot climate, disease resistance and survival under harsh climatic conditions. Ganesakale and Rathnasabapathy (1973) and Acharya (1982) reported that Ramanathapuram and adjoining areas of Tirunelveli districts are the distribution areas of Ramnad White. The breeding tract lies between 9º05 and 9º50 N latitude and between 78º10 and 78º29 E longitude. The information on body measurements of this breed is very limited. An attempt was made to study the body conformation of Ramnad White sheep in its native tract.OtherItem Open Access Body Weight and Body Measurements of Kilakarsal Sheep of Tamil Nadu(TANUVAS, Chennai, 2011-12) Ravimurugan, T.; Thiruvenkadan, A.K.; Saravanan, R.; Murali, N.; Panneerselvam, S.ArticleItem Open Access Chippiparai Breed Of Dogs in Tamil Nadu: An Assessment Of Physical and Performance Characteristics(2015) Karthickeyan, S.M.K.; Ravimurugan, T.; Hisham, A.; Sivaselvam, S.N.; TANUVASThe Chippiparai dog, a unique medium-sized, sight-hound breed seen in south India, is studied to assess the distribution and breed characteristics. The breeding tract of this dog is Tirunelveli district of southern Tamil Nadu. The trademark features are fawn coat, black nostrils, black eyes, broad chest and tucked up abdomen. The overall means of body length, head length, muzzle length, tail length, height at withers, height at rump, chest girth, belly girth, ear length and ear width in adults were 60.90 ± 1.34, 21 ± 0.39, 9.56 ± 0.17, 40.28 ± 0.77, 59.56 ± 1.30, 59.84 ± 1.38, 60.36 ± 1.36, 39.30 ± 0.75, 10.92 ± 0.23 and 8.10 ± 0.18 cm respectively. Sex had significant effect (P< 0.05) on body length, and highly significant effect (P< 0.01) on height at withers and chest girth. This study shows that Chippiparai dog breed is a medium-sized indigenous sight hound dog of Tamil Nadu.ArticleItem Open Access DISTRIBUTION AND CHARACTERIZATION OF KILAKARSAL (KEEZHAKARAISAL) SHEEP(Indian Society for Sheep and Goat Production and Utilization, 2010-04) Ravimurugan, T.; Devandran, P.; Joshi, B.K.; TANUVASSheep rearing is an important livelihood for small and marginal farmers especially in areas, which are drought prone and lack irrigation facilities. Tamil Nadu is home to about eight recognized breeds of sheep and most of them are raised for meat production. Kilakarsal, which is also known as Keezhakarisal, Karuvai, Keezhakaruvai, Ramnad karuvai and Adikarisal, is one of the recognized sheep breeds of south Tamil Nadu (Ganesakale and Rathnasabapathy, 1973 and Acharya, 1982). It is hardy, heat resistant and has the capacity to utilize coarse feed materials efficiently, traits that are beneficial in drought prone areas. This sheep breed also has the capacity to cover long distances in search of pasture for grazing. The information on Kilakarsal sheep is very scanty. The aim of the present study was to investigate the characteristics, body conformation and the phenotypic variation in body weights and body measurements of Kilakarsal sheep raised under farm conditions in its native tract.ArticleItem Open Access Evaluation Of Safety And Humoral Antibody Response Of Newcastle Disease Oral Pellet Vaccine In the Field Condition(TANUVAS, Chennai, 2021-01) Madhanmohan, M.; Kirubakaran, J. John; Ravimurugan, T.; TANUVASNewcastle Disease (ND) is a highly infectious disease of poultry causing huge economic loss to the poultry farmers. Newcastle Disease is controlled by vaccination of commercial or backyard poultry using inactivated or live ND vaccines. In the present study, safety and humoral antibody response in birds vaccinated with Newcastle disease virus oral pellet vaccine (NDV OPV) was studied in field conditions. A total of 300 backyard poultry (n=100/ farm) from three different farms were vaccinated with NDV OPV. The vaccinated birds were monitored for any adverse reactions or mortality up to 28 days post vaccination (dpv). There were no untoward reactions or mortality in the vaccinated birds in all the three farms up to 28 dpv. Blood samples (n=8/farm) were collected randomly from vaccinated birds on 0 and 28 dpv in each farm and were subjected to heamagglutination inhibition (HI) test. The mean HI titre was 66, 56 and 25 in farm 1, farm 2 and farm 3 respectively at 28 dpv. All the vaccinated birds had protective HI titre of ≥16 at 28 days post vaccination. In conclusion, Newcastle disease virus oral pellet vaccine (NDV OPV) is safe and induces good protective humoral antibody response and can be used to control ND in backyard poultry.ArticleItem Open Access GROWTH EFFICIENCY OF MADRAS RED SHEEP UNDER FARMER’S FLOCKS(Indian Society for Sheep and Goat Production and Utilization, 2010-10) Devendran, P.; Cauveri, D.; Murali, N.; Ravimurugan, T.; Gajendran, K.; TANUVASMadras Red is a hairy breed of sheep raised mostly by landless farmers in northern districts of Tamil Nadu. The aim of the present study was to investigate the growth efficiency of Madras Red sheep reared by farmers in their native tract. The growth efficiency of sheep was computed by least squares analysis as the relative body weight gain for 0-3, 3-6, 6-9 and 9-12 months of age. The growth efficiency was decreased as the age of the lambs was advanced. Season of lambing had significant (p<0.05) influence on growth efficiency only during 6-9 months of age. Lambs born in off-season (April - July) gained more body weight than those born in the main season (October - January). The random effect of sire was significant (p<0.05) on growth efficiency during 0-3 and 6-9 months of age. Ram lambs were heavier than ewe lambs while growth efficiency was significantly (p<0.01) higher in ewe lambs due to their relatively faster growth during 0-3 and 9-12 months of age. The regression of dam weight at lambing had significant (p<0.01) influence on growth efficiency of their offspring during 0-3 months, indicating that lambs of heavier dams had better growth efficiency. The heritability estimate was low (0.08) at 0-3 months and moderate to high (0.14–0.31) at 3-6, 6-9 and 9-12 months of age, which suggested that selective breeding could improve the growth efficiency of Madras Red sheep.ArticleItem Open Access Growth Performance of Chevaadu Sheep of Tamil Nadu under Farmers Field Conditions(Indian Veterinary Journal, 2017-01) Ravimurugan, T.; TANUVASChevaadu sheep, probably the only sheep breed of Tamil Nadu that have single coat colour and is considered as unique, culturally important breed. Body weight was recorded in 857 Chevaadu sheep reared under extensive management system in Tirunelveli and Tuticorin districts of southern Tamil Nadu. Least square technique of analysis of variance was used to study the effect of sex on growth performance of the sheep. The overall mean body weight at birth, three, six, nine and 12 months were recorded as 2.55 ± 0.01, 7.92 ± 0.06, 13.20 ± 0.16, 16.73 ± 0.22 and 19.42 ± 0.11 kg, respectively.OtherItem Open Access Growth Performance of Kilakarsal Sheep of Tamil Nadu(TANUVAS, Chennai, 2011-12) Chellapandian, M.; Ravimurugan, T.ArticleItem Open Access MOLECULAR CHARACTERIZATION OF MADRAS RED SHEEP USING MICROSATELLITE MARKERS(Indian Society for Sheep and Goat Production and Utilization, 2015-10) Ravimurugan, T.; TANUVASGenetic diversity of Madras Red sheep was investigated by microsatellite markers recommended by FAO.All the loci studied were highly informative and polymorphic. The number of observed alleles ( ) detected ranged from 3 to14, with an overall mean of 7.00±2.81. The mean effective number of alleles was ( ) 4.42±2.12. The overall means for observed ( ) and expected ( ) heterozygosity were 0.65±0.25 and 0.73±0.16, respectively. The mean polymorphism information content (PIC) value was 0.6704 which ranged from 0.2170 to 0.8215. The within breed estimate ( ) indicated heterozygosity shortage of 0.07. The Hardy-Weinberg equilibrium (HWE) test revealed that 76% (19/25)) loci deviated from equilibrium. Shannon's information index (I) was sufficiently high with a mean of 1.5578. The study revealed that even a breed with significant level of genetic variation needs proper genetic management for improvement and conservation.ArticleItem Open Access An outbreak of sheep pox in an organized farm of Tamil Nadu, India(2017) Manimaran, K.; Mahaprabhu, R.; Jaisree, S.; Hemalatha, S.; Ravimurugan, T.; Pazhanivel, N.; Roy, Parimal; TANUVASOutbreak of sheep pox was noticed in flocks of Khilakaraisal in an organized government farm of Tirunelveli district during 2013. Mortality and morbidity rates were 4.17% and 80.00%, respectively. Both the sexes of sheep between 6 months to 2 years old were affected. DNA extracted from the scab specimens (n=5) were amplified using Capri pox specific p32 gene primers and yielded 192 bp product. In order to differentiate between sheep pox and goat pox PCR – RFLP was carried out. Digestion of PCR product with EcoRI enzyme yielded two fragments with a size of 123 bp and 63 bp which confirmed the presence of sheep pox virus. Histopathological examination of tissues revealed extensive hydropic degeneration of proliferating epidermal cells with presence of large number of intracytoplasmic eosinophilic inclusion bodies in the keratinocytes of epidermal cells in skin. Lung revealed large infiltration of lymphocytes and macrophages with presence of intracytoplasmic eosinophilic inclusions in the macrophages, proliferation of type II pneumocytes were prominent along with bronchiolar epithelial hyperplasia. The outbreak was controlled by effective preventive measures like vaccination of healthy animals, affected animals were treated with a course of antibiotic for 7 days, contaminated areas were disinfected and restricted the movement of animals from unaffected areas to infected areas.ArticleItem Open Access PERFORMANCE OF INDIGENOUS GOAT (PALLAI ADU) UNDER FIELD CONDITIONS(TANUVAS, 2009-09) Ravimurugan, T.; Devendran, P.; Cauveri, D.; Balachandran, S.; TANUVASSurvey conducted in the breeding tracts of Pallai Adu goats revealed that the animals were distributed in the Karungulam and Ottapidaram blocks of Thoothukudi and Palayamkottai block of Tirunelveli districts in Tamil Nadu. Morphology, body weight and reproduction performance were recorded in both sexes. The animals are medium sized and predominately yellowish brown in colour. Head is straight and its colour is same as of body colour.ArticleItem Open Access Physical and Performance Characteristics of Rajapalayam Dogs of Tamil Nadu(2014-06) Hisham, A.; Karthickeyan, S.M.K.; Ravimurugan, T.; Sivaselvam, S.N.; TANUVASThe Rajapalayam dog, a medium-sized, sight-hound breed seen in south India, is studied to assess the distribution and breed characteristics. The breeding tract is Rajapalayam taluk in Virudhunagar district of southern Tamil Nadu. The trademark features are white coat, pink nostrils, golden brown eyes, broad chest and tucked up abdomen. The overall means of body length, height at withers and chest girth in adults were 58.26 ± 0.62, 58.46 ± 0.60 and 63.88 ± 0.90 cm respectively. Sex had significant effect (P< 0.05) on body length and chest girth and highly significant effect (P < 0.01) on height at withers. This study shows that Rajapalayam breed is a unique germplasm, requiring immediate conservation measures.OtherItem Open Access Reproductive Performance of Kilakarsal Sheep of Tamil Nadu(TANUVAS, Chennai, 2011-12) Chellapandian, M.; Ravimurugan, T.ArticleItem Open Access Screening for FecB Mutation in Vembur and Kilakarsal Sheep of Tamil Nadu(Indian Veterinary Journal, 2014-08) Seevagan, M.; Jeichitra, V.; Rajendran, R.; Sivaselvam, S.N.; Karthickeyan, S.M.K.; Ravimurugan, T.; TANUVASArticleItem Open Access அறிந்துகொள்வோம் - ஒட்டக இனங்கள்(TANUVAS, Chennai, 2017-05) Ravimurugan, T.; Madhanmohan, M.ArticleItem Open Access அறியுங்கள் சரியான கறவையினம் - பெற்றிடுங்கள் நிறைந்த பால் வளம்(TANUVAS, Chennai, 2015-02) Ravimurugan, T.; TANUVASArticleItem Open Access அழிந்து வரும் கால்நடை இனங்கள் -ஓர் பதிவு(TANUVAS, 2009-12) Ravimurugan, T.; Balachandran, S.; TANUVASArticleItem Open Access அழிவிலிருந்து மீட்போம் ஆட்டினத்தை(TANUVAS, Chennai, 2015-04) Ravimurugan, T.
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