Browsing by Author "Sathiyamoorthy, N"
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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 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 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.