Browsing by Author "Senthilvel, K"
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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 Babesia canis infection in a Labrador pup- A clinical case report(2014-12) Saravanan, S; Palanivel, KM; Senthilvel, K; Sathyabama, T; TANUVASA five months old male Labrador pup manifested signs suggestive ofbabesiosis and examination of the peripheral capillary blood smear revealed B. canis and ticks from the pup were identified as Rhipicephalus sanguineus, Haematocrit and semm biochemical analysis revealed a reduction in haemoglobin level, RBC count and glucose, and increased urea, creatinine and phosphorous, Diminazene aeeturate was found to be effective along with supportive therapy.ArticleItem Open Access Detection of organophosphate resistance in house flies population (Musca domestica L.) by laboratory bioassay method(2021) Sathiyamoorthy, N; Senthilvel, K; Rani, N, et al.,; TANUVASHouse fly menace is one of the major problems in poultry industry in the recent years. High density of flies not only cause stress to birds and farmworkers, they can also cause great annoyance to nearby human habitations which poses a serious public health problem. Adult house flies were collected from five selected poultry farms using sweep net and reared in laboratory. Three to five days old F1 generation flies produced by the healthy parental population, maintained in the laboratory were used for topical and contact residual bioassays. In this study, different concentrations of dichlorvos were used for topical bioassay such as, 0.02, 0.04, 0.08, 0.1, 0.2, 0.4 and 0.8 μg (a.i)/μl and 0.14, 0.28, 0.56, 1.12, 2.24 and 4.48 μg (a.i)/cm2 for residual contact bioassay. Mild to moderate resistance was observed in F1 generation house flies treated with dichlorvos from all the five farms. The resistance ratio ranged between 1.46 to 15.15 and 6.23 to 22.45 fold by topical and residual contact bioassay respectively. In the present study to identify the level of insecticide resistance in house flies to common insecticides by laboratory bioassay methods.ArticleItem Open Access ECONOMICALLY IMPORTANT PARASITIC DISEASES OF COMMERCIAL POULTRY(TANUVAS, 2020-02) Senthilvel, K; TANUVASThe incidence of parasitic diseases, which was once very high in free range birds, as they have access to contaminated soil and arthropod intermediate hosts, has now been recorded frequently in commercial birds also. Although losses due to parasitic infections have not been quantified, they cause great economic loss to the industry by way of morbidity and mortality. However, parasitic infections rarely cause mortality in birds unless the infection is severe, but they cause decreased growth rate, production and feed efficiency. Besides, the affected birds are more susceptible to dreadful diseases owing to impaired immunity resulting from parasitic infections. Prevention and control of parasites is one of the cheapest and most dependable methods of increasing production.ArticleItem Open Access Efficacy of Cypermethrin to Control Haemaphysalis Intermedia Ticks(2016-09) Rubinibala, B; Ponnudurai, G; Senthilvel, K; Balasubramaniam, A; TANUVASA study was undertaken to determine the efficacy of cypermethrin in Haemaphysalis intermedia ticks from smallholder flocks in Namakkal district and organised farms of Veterinary College and Research Institute (V C&RI) and Mecheri Sheep Research Station (MSRS). Bioassays viz., Adult Immersion Test (AIT) and Larval Packet Test (LPT) were used in this study. A significant reduction in egg mass was observed at higher concentration of cypermethrin.ArticleItem Open Access Ef cacy of Cypermethrin to Control Haemaphysalis Intermedia Ticks(Indian Veterinary Association, 2016-09) Rubinibala, B; Ponnudurai, G; Senthilvel, K; Balasubramaniam, A; TANUVASA study was undertaken to determine the ef cacy of cypermethrin in Haemaphysalis intermedia ticks from smallholder ocks in Namakkal district and organised farms of Veterinary College and Research Institute (VC&RI) and Mecheri Sheep Research Station (MSRS). Bioassays viz., Adult Immersion Test (AIT) and Larval Packet Test (LPT) were used in this study. A signicant reduction in egg mass was observed at higher concentration of cypermethrin. AIT showed that the LC50 and LC95 values were 103.39 ppm and 291.11 pm with 95 per cent con dence interval for ticks from smallholder ock and 106.15 ppm and 310.92 ppm with 95 per cent con dence interval for ticks from VC&RI farm. LPT revealed that LC50 and LC95 values of larvae from smallholder ock, VC&RI and MSRS farms were 97.76 and 284.20, 97.57 and 280.41, and 98.38 and 274.37 respectively with 95 per cent con dence interval. High mortality with low reproductive index among the survived ticks and low discriminating doses indicated that H. intermedia ticks were susceptible to cypermethrin.ThesisItem Open Access Intertransmissibility of the common nematode parasites of pigeon (Columbolivio domestico) and domestic fowl (Gollus gollus domesticus)(Department of Parasitology, College of Veterinary and Animal Sciences, Mannuthy, 1996) Senthilvel, K; KAU; Madhavan Pillai, KAn investigation was made on the prevalence of nematode infections in pigeons for a period of one year by faecal and postmortem examinations and the percentage prevalence was 35.24 and 46.74 respectively. The species of nematodes collected from pigeons were Ascaridia columbae, Capillaria obsignata, Ornithostrongylus quadriradiatus, Acuaria spiralis and Strongyloides avium. Capillaria obsignata had the highest prevalence. The development of egg and the time taken to reach the infective stage in egg cultures of Ascaridia galli, Heterakis gallinae, Syngamus trachea, Ascaridia columbae, Capillaria obsignata and Ornithostrongylus quadriradiatus maintained at different room temperature were studied and recorded. The cross transmission trials with fowl nematodes; A. galli, H. gallinae and S. trachea and pigeon nematodes; A. columbae, C. obsignata and 0. quadriradiatus were conducted in pigeons and chicks respectively. Syngamus trachea and C. obsignata were found to be transmissible between pigeons and chicks. The detailed life cycles of A. columbae, S. trachea and 0. quadriradiatus in pigeons were worked out in detail. The prepatent period for these species was 46, 28 and 7 days respectively. The infective larvae of 0. quadriradiatus were seen to be phototropic and hydrotactic. They remained viable for 47 to 52 and 60 to 67 days in dry and wet seasons respectively. The clinical signs, gross and histopathological lesions produced by the nematodes in pigeons were recorded. Moderate infections of O. quadriradiatus produced anaemic changes in pigeons.ArticleItem Open Access SCIENTIFIC DAIRY FARMING – A SUCCESS STORY OF A VILLAGE CASE STUDY(2014-01) Akila, N; Senthilvel, K; Bharathy, N; TANUVASDairy farming is an age old practice and generally farmers keep 2-3 milch animals to meet out the family need as well as for sale by converting free feed stuff available in their field into milk. This provides the female members of the family to generate a considerable amount of income for their family expenses. When the members face risk like, animals are not in milk for months/years together ie. Dry animal, death of a lactating animal, increasing feed cost and infertile animal leads to the reduction of the household income and would probably force the family to abandon rearing dairy animals. Improved breeding services, health care with low cost balanced feeding practices may be helpful to overcome these risks and when the farmers adopted the scientific technologies related to feeding and breeding the possibilities of occurrence of risks will be minimized and assist to manage the occupation in a profitable manner.ArticleItem Open Access Seasonal prevalence of mortality pattern among broilers in Tamil Nadu(1998) Raman, M; Krishnappa, K; Senthilvel, K; Venugopalan, AT; TANUVASSeasonal prevalence of mortality pattern was analysed in 2108 broilers brought fur p0st~m0rLem to the University Training and Research Centre, Dhurmupuri (a constituent of TANUVAS) during March 1993 to February 1995. Among the various diseases, the mortality due to infectious Bursul Disease (lHD) was more followed by Runikhet disease (RD, mixed infection of IBD and RD, coccidiosis and other nutritional and metabolic diseases. Overall mortality rate was found to be higher in summer months (March to May)ThesisItem Open Access Studies On Caprine Coccidiosis In Tamil Nadu(Tamil Nadu Veterinary and Animal Sciences University, 2001) Senthilvel, K; TANUVAS; Rajavelu, GArticleItem Open Access Survey on insecticide usage pattern against house fly (Musca domestica L.) population in commercial poultry farms in Namakkal region, Tamil Nadu, India(2018-04) Sathiyamoorthy, N; Senthilvel, K; Rani, N, et al.; TANUVASFifty commercial poultry farms from different blocks of Namakkal district in Tamil Nadu, India were selected and insecticide usage pattern was surveyed by questionnaire method. The system of management followed was narrow caged poultry house in ten farms and the remaining was high rised poultry house system. Farm capacity ranged from six thousand to two lakhs birds with different age groups were maintained. The incidence of fly problem was higher during the month of March and April followed by September and October in every year in Namakkal region, which usually coincided with the onset of fruiting season and north east monsoon respectively. Disposal of manure was carried out in farms as and when the market price for manure was high and in most of the farms, the manure removal being made 2 to 3 times in a year. Out of fifty farms surveyed, insect growth regulator-cyromazine was used as larvicide in 41 farms, dichlorvos in 18 farms, malathion in 2 farms, cypermethrin in 17 farms, deltamethrin in 4 farms, neonicotinoids in 2 farms and larvend (herbal preparation) in 7 farms as single or mixed treatment. The method of application of insecticides also varied from farm to farm. The insecticides viz., dichlorvos, cypermethrin and cyromazine (IGR) were used for control of house flies in the caged layer houses. Some of the farmer, had experienced control failure in their farms when dichlorvos, cypermethrin and deltamethrin used during fly control programme, which warrants the bioassay studies of flies to assess the insecticide resistance, if any in this poultry region.ArticleItem Open Access Survey on insecticide usage pattern against house fly (Musca domestica L.) population in commercial poultry farms in Namakkal region, Tamil Nadu, India(2018) Sathiyamoorthy, N; Senthilvel, K; Rani, N, et al.,; TANUVASFifty commercial poultry farms from different blocks of Namakkal district in Tamil Nadu, India were selected and insecticide usage pattern was surveyed by questionnaire method. The system of management followed was narrow caged poultry house in ten farms and the remaining was high rised poultry house system. Farm capacity ranged from six thousand to two lakhs birds with different age groups were maintained. The incidence of fly problem was higher during the month of March and April followed by September and October in every year in Namakkal region, which usually coincided with the onset of fruiting season and north east monsoon respectively. Disposal of manure was carried out in farms as and when the market price for manure was high and in most of the farms, the manure removal being made 2 to 3 times in a year. Out of fifty farms surveyed, insect growth regulator-cyromazine was used as larvicide in 41 farms, dichlorvos in 18 farms, malathion in 2 farms, cypermethrin in 17 farms, deltamethrin in 4 farms, neonicotinoids in 2 farms and larvend (herbal preparation) in 7 farms as single or mixed treatment. The method of application of insecticides also varied from farm to farm. The insecticides viz., dichlorvos, cypermethrin and cyromazine (IGR) were used for control of house flies in the caged layer houses. Some of the farmer, had experienced control failure in their farms when dichlorvos, cypermethrin and deltamethrin used during fly control programme, which warrants the bioassay studies of flies to assess the insecticide resistance, if any in this poultry region.Book chapterItem Open Access வாத்துகளில் பாசுரெல்லா மல்டோசிடா நுண்ணுயிரியின் தாக்கம்(2017) Udhayavel, S; Gopala Krishna Murthy, TR; Gowthaman, V; Senthilvel, K; TANUVAS