Browsing by Author "Ponnudurai"
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ArticleItem Open Access Association of House Fly (Musca domsestica) Intensity by Spot Card and Manure Moisture in Caged Layer Houses(Excellent Publishers, 2018-02) Sathiyamoorthy, N; Senthilvel, K; Rani, N; Ramya, K; Ponnudurai; TANUVASHouse fly intensity at five different poultry farms in Namakkal region of Tamil Nadu was monitored by spot cards. A plain white sheet of 12.5×7.5 cm square was pinned to thermocole of similar size and tied to cages above two feet from the floor in narrow caged poultry houses and three feet above from the floor in high rise caged poultry houses. After 24 hours, the spot cards were removed and the regurgitation and faecal spots made by adult flies were counted. The mean number of fly specks per card was 59 ± 8 in farm-I, 195 ± 28 in farm-II, 63 ± 12 in farm-III, 34 ± 5 in farm-IV and 101 ± 19 in farm-V. About 50 gms of manure collected in different points of selected farms were pooled and moisture estimation was carried out by oven drying method. The moisture content of manure was 67.49, 86.32, 48.64, 41.56 and 79.11 per cent in farm-I, farm-II, farm-III, farm-IV and farm-V respectively. Higher fly population was observed in farms (I, II and V) that had manure moisture content > 60 per cent and mild to moderate level was noticed in farms (III and IV) with moisture level ranged between 40 and 50 per cent.ArticleItem Open Access Prevalence and Risk Factors Associated with Bovine Viral Diarrhea Virus Infection in Dairy Cattle of North Western Zone of Tamilnadu(2016-07) Kumar, S. Krishna; Palanivel, K.M.; Sukumar, K.; Ponnudurai; Selvaraju, G.; Masilomoni Ronald, Samuel; TANUVASA cross sectional study was carried out to identify the seroprevalence and risk factors associated with bovine viral diarrhea (BVD) infection in non vaccinated dairy cattle herds of north western part of Tamil Nadu between September 2014 and August 2016. A total of 500 sere samples were collected from 62 dairy herds and indirect ELISA was carried out for BVD antibodies. A pre defined questionnaire which included variables related to herd size, frequency of purchase and pattern of purchase of new animals was collected from each herd. A herd with one animal positive for BVDV antibodies considered BVD sero positive to calculate herd sero positivity. The overall sero prevalence in the study population was 13.20%. The Chi square model showed that flock size, location and animal purchasing pattern were the potential risk factors associated with BVD infection in dairy cattle.