Browsing by Author "Ilavarasan S"
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ArticleItem Open Access A Case Report of Aflatoxicosis in a Country Chicken Unit with Retarded Egg Production(2017) Vijayalingam TA; Rajesh NV; Ilavarasan S; TANUVASA backyard country chicken unit with 200 numbers of 8 month old birds was reported to have the production of poor quality eggs viz., small sized, yolkless and watery albumin. Three of the birds were also showed continuous oozing of blood in between digits. The supplementation with mineral mixture and multivitamins yielded negative results. Three birds with the production of inferior quality eggs and retarded growth were humanely slaughtered and carried out post mortem examination. Post-Mortem examination showed enlarged, pale coloured liver, the cut surface bulged out with sticky oily substance. Microscopically, the liver showed vacuolar degeneration of hepatocytes, interlobular bile duct proliferation and infiltration of mononuclear cells in the intercellular area. The Oviduct was very pale and small. The mucosa of the magnal and shell gland portions was dry and less folded. The ovary revealed atretic and haemorrhagic follicles.ArticleItem Open Access Analysis of poultry disease pattern using post-mortem examination data in Ramanathapuram district: A retrospective study(2019) Vijayalingam TA; Rajesh NV; Ilavarasan S; Venkataramanan R; TANUVASA Retrospective study on the results of post mortem examination conducted on poultry carcasses at Veterinary University Training and Research Centre (VUTRC), Ramanathapuram, a constituent unit of Tamil Nadu Veterinary and Animal Sciences University, Tamil Nadu, India was carried out over a period of four years from 2015 to 2018 in order to find out the frequency of occurrence of a particular disease in this geographical location and species, age and season wise pattern of disease occurrence. Mostly, the pure desi chicken were found to be the main target for many of the infectious diseases (12.1%) followed with hybrid chicken Giriraja (7.4%) and Turkey (5.3%). Japanese Quails were least affected (1.4%). Birds at the age group of 0-8 wks was most susceptible (13.2%) rather than 9-20 wks (12.7%) and >20 wks (10.3%). Disease prevalence was reported highest during February (31.5%) and lowest during July (6.0%). The North East monsoon represented the period of increased disease occurrence of 13.0% compared to that of summer season 10.1% and South West monsoon 8.9%. During the study period of four years between 2015 and 2018, the highest mortality (19.4%) in poultry was recorded during the year 2015 and lowest (12.5%) during 2016. A total of 125 flocks with 68, 550 birds were affected with recorded death of 10, 645 birds during the study period. Out of this mortality 1922 (16.3%) was due to parasitic diseases, 2608 (29.9%) viral diseases, 5904 (14.3%) bacterial diseases, 77 (6.0%) fungal diseases and 134 (6.8%) were due to other factors like heat stroke. Of the bacterial diseases diagnosed, Ulcerative enteritis was of the highest percentage (14.6%) followed by Fowl chlorea (8.0%) and Infectious coryza (3.7%). Parasitic diseases included Coccidiosis (12.3%), tape worm infestation (10.1%), round worm infestation (14.4%) and mixed parasitic infection (16.3%). The most reported death due to viral diseases was Newcastle Disease (ND) (41.4%), Infectious Laryngotracheitis (ILT) (22.2%) and Fowl pox (6.9%). Aflatoxicosis was the only fungal entity noticed (6.0%).ArticleItem Open Access Effect of different levels of Azolla meal on growth performance of Ramnad white sheep kids(2023) Sheeba A; Lurthu Reetha T; Ilavarasan S; TANUVASThe study was carried out in Ramnad White Sheep maintained at TANUVAS – Regional Research and Educational Centre, Pudukkottai from 3 months age group. Twelve numbers of 3 months age group of Ramnad White sheep were randomized into three treatment group of 4 each T1 (control), T2 (100 gm fresh Azolla/animal /day), T3 (200 g fresh Azolla/animal /day). Azolla cultivated in this centre, was supplemented to ramnad white sheep on fresh matter basis along with Concentrate feed. The values observed for total gain in body weight per kid were 3.05, 3.15, 3.66 in treatments T1, T2, T3 respectively. Also weekly gains in body weight per kid were 0.254, 0.262, 0.305 in treatment T1, T2, T3 respectively. The corresponding values for average daily gain were 0.033, 0.035, 0.040 kg in treatment T1, T2, T3 respectively. The body weight gain was significantly (p<0.05) higher in sheep kids of treatment group T3, followed by T2, T1 Higher total gain was noticed in T3. Indicated that supplementation of green Azolla increased the growth rate of experimental sheep kids.ArticleItem Open Access Effect of different levels of Azolla meal on growth performance of Ramnad white sheep kids(2023) Sheeba A; Lurthu Reetha T; Ilavarasan S; TANUVASThe study was carried out in Ramnad White Sheep maintained at TANUVAS – Regional Research and Educational Centre, Pudukkottai from 3 months age group. Twelve numbers of 3 months age group of Ramnad White sheep were randomized into three treatment group of 4 each T1 (control), T2 (100 gm fresh Azolla/animal /day), T3 (200 g fresh Azolla/animal /day). Azolla cultivated in this centre, was supplemented to ramnad white sheep on fresh matter basis along with Concentrate feed. The values observed for total gain in body weight per kid were 3.05, 3.15, 3.66 in treatments T1, T2, T3 respectively. Also weekly gains in body weight per kid were 0.254, 0.262, 0.305 in treatment T1, T2, T3 respectively. The corresponding values for average daily gain were 0.033, 0.035, 0.040 kg in treatment T1, T2, T3 respectively. The body weight gain was significantly (p<0.05) higher in sheep kids of treatment group T3, followed by T2, T1 Higher total gain was noticed in T3. Indicated that supplementation of green Azolla increased the growth rate of experimental sheep kids.