Browsing by Author "Vijayalingam TA"
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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 Seagrasses as potential source of fodder for livestock: Complete proximate and gas chromatography-mass spectrometry (GCMS) analysis(2019) Vijayalingam TA; Rajesh NV; TANUVASThe present study analysed the nutritional values of Cymodocea serrulata (R.Br.) Asch. & Magnus, Syringodium isoetifolium (Asch.) Dandy and Enhalus acoroides (L.f.) Royle by complete proximate analysis and determined the phytocompounds present in them by using Gas Chromatography-Mass Spectrometry (GC-MS) technique. The complete proximate analysis revealed a higher content of crude protein, crude fibre, calcium, phosphorus and energy in all the three grasses under study. However E. acoroides contained higher content of ether extract, lower level of acid insoluble ash and gross energy compared to the other two grasses. The GC-MS analysis showed the presence of decane, sucrose, tetradecanoic acid, deoxyspergualin, n-hexadecanoic acid, phytol, ricinoleic acid, docosyl isobutyl ether and squalene in C. serrulata and decane, sucrose, phytol, 9,12,15-octadecatrienoic acid, (Z,Z,Z)-Triethylene glycol monododecyl ether and Hexadecanoic acid and 2-hydroxy-1-(hydroxymethyl) ethyl ester in S. isoetifolium. Ethanol extract of E. acoroides revealed the existence of decane, epoxomicin, tetradecanoic acid, n-hexadecanoic acid, phytol, linoelaidic acid, 9,12,15-octadecatrienoic acid, (Z,Z,Z)-diethylene glycol monododecyl ether, hexadecanoic acid, 1-(hydroxymethyl)-1,2-ethanediyl ester and 15,17,19,21-hexatriacontatetrayne in GC-MS study. All the three seagrasses under study were found to be the rich sources of crude protein, energy, minerals and phytocompounds of varied pharmacological properties which can enable them to be an eligible source of alternative nutritional supplements for ruminants in the areas adjacent to coastal region of Ramanathapuram district, where fodder scarcity exists.