S. Gomathinayagam - Academia.edu (original) (raw)

Papers by S. Gomathinayagam

The Indian Journal of Animal Sciences

Prevalence of syphaciosis (pinworm infection) in laboratory rats and mice, species identification... more Prevalence of syphaciosis (pinworm infection) in laboratory rats and mice, species identification, chemotherapy with ivermectin and its effect on pinworm infection, and Th2 cytokine response was studied. Using perianal tape test examination, the highest rate of pinworm infection was found in male Wistar rats (69.44%) followed by female Wistar rats (62.50%), male Balb C mice (60.60%), female Swiss Albino mice (51.42%), male Swiss Albino mice (33.33%) and female Balb C mice (32.69%). Wistar rats had maximum infection (65.97%) followed by Balb C mice (46.64%) and Swiss albino mice (42.37%). Overall, males had higher infection (54.45%) compared to females (48.87%). Syphacia obvelata in mice and S. muris in rats were the pinworms identified morphologically and confirmed with polymerase chain reaction and sequencing. No mixed infection was found in rats and mice. Ivermectin (2.5 mg/kg) as oral gavage as well as in drinking water continuously for five days was highly effective in eradicati...

Probiotics are live microorganisms which have been found to confer a health on the host when admi... more Probiotics are live microorganisms which have been found to confer a health on the host when administered in adequate amounts. This study was performed with the purpose of investigating effect of combinations of Probiotic preparation containing Genus Lactobacillus and Genus Bifidobacterium supplemented in temple elephants of Tamil Nadu. Before and after supplementation of probiotics, feed and dung samples were collected in 10 elephants, the dry matter digestability was estimated by lignin as a internal marker. The same way the dry matter digestibility were calculated study elephants were supplemented with (n=10)1 gram of Probiotic preparation which contained 1x109 CFU of Genus Lactobacillus and 1x109 CFU of Bifidobacterium was given, orally per 50 kg body weight, through the food materials (concentrate feed), on a daily basis continuously for a period of ten days. On eleventh day the dung samples were collected from these ten elephants the dry matter digestibility calculated by lign...

Psittacines are one the most intelligent birds, and the ability of some species to imitate human ... more Psittacines are one the most intelligent birds, and the ability of some species to imitate human voices, enhances their popularity as pets. Mites are one of the major health related problems in the companion bird practice, especially in newly acquired birds and in large aviary collections. Hence, there is a need to examine the birds for presence of ectoparasites. This study was undertaken in Major Zoos like National Zoological Park, New Delhi, Sri Chamarajendra Zoological Garden, Mysore and Arignar Anna Zoological Park, Vandalur.

Indian Journal of Animal Sciences, 2004

Tamilnadu Journal of Veterinary and Animal Sciences, 2010

Bioassays were conducted using the Entomopathogenic fungi Beauveria bassiana and Metarhizium anis... more Bioassays were conducted using the Entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae against insects and ticks of veterinary importance. Isolation of theses fungi was done from dead larvae of Musca domestica and Boophilus ticks. Surface and mass culturing of both the fungi were done in Potato Dextrose Agar and Potato Dextrose Broth respectively. Cultural characters of the fungi were studied. Surface culture of fungus Beauveria bassiana yielded white or lightly coloured colonies, whereas M. anisopliae produced herbage green or olivaceous green colonies. Mass culturing of fungi using other easily available field sources was discussed.

International Journal of Current Microbiology and Applied Sciences, 2018

The present study was undertaken to determine the prevalence of ectoparasite in captive wild bird... more The present study was undertaken to determine the prevalence of ectoparasite in captive wild birds. Fallen feathers and individual bird examination was conducted for identification of mite, lice and fly in Psittaciformes and columbiformes bird from Avian and Exotic pet Unit (AEPU) (OP), Teaching veterinary clinical complex, Madras veterinary college, Chennai, University Research farm (URF), Tamilnadu Veterinary and Animal sciences University, Madhavaram, Chennai, Arignar Anna Zoological Park (AAZP)-Vandalur, Chennai, Private and Pet Shops in and around Chennai. Columbicola sp, Menocanthus sp, Anaticola sp and Pseudolynchia sp were identified in AEPU and URF.

Veterinary world, 2016

The aim of this work was to study the tolerance level of farmers toward different human-wildlife ... more The aim of this work was to study the tolerance level of farmers toward different human-wildlife conflict (HWC) situations. This study was conducted in 24 villages of nine blocks from Kancheepuram, Coimbatore, Erode, and Krishnagiri districts of Tamil Nadu by personally interviewing 240 farmers affected with four different HWC situations such as human-elephant conflict (HEC), human-wild pig conflict (HPC), human-gaur conflict (HGC), and human-monkey conflict (HMC). A scale developed for this purpose was used to find out the tolerance level of the farmers. In general, the majority (61.70%) of the farmers had medium level of tolerance toward HWC, whereas 25.40% and 12.90% belonged to a high and low category, respectively. The mean tolerance level of the farmer's encountering HMC is low (8.77) among the other three wild animal conflicts. In tackling HWC, the majority (55.00%) of the HEC farmers drove the elephant once it entered into their farmland. In the HPC, more than three-four...

Veterinary …, 2007

The nested PCR assay for the detection of 16S rRNA gene fragment of ehrlichia canis from the bloo... more The nested PCR assay for the detection of 16S rRNA gene fragment of ehrlichia canis from the blood of dogs was standardized for the first time in India. The genus-specific primers amplified a 477 bp band of Ehrlichia sp. in the first PCR. The nested PCR assay using species-specific primers produced a 387 bp band of e. canis. The nested PCR detected e. canis organisms in 50% of samples as against the routine blood smear examination, which revealed morulae in only 19.38% of samples. This protocol could detect the presence of e. canis, even one month after specific antibiotic therapy.

The Pharma Innovation Journal, 2018

The commercial drug, Nakku Poochi Kolli Kudineer (NPK) chooranum, contains extract of several her... more The commercial drug, Nakku Poochi Kolli Kudineer (NPK) chooranum, contains extract of several herbs i.e. Butea monosperma, Nigella sativa, Embelia ribes, Trachyspermum ammi, Operculina turpethum, Cassia augustifolia and Picrorhiza kurroa and used for removal of round worms in human beings. An in vitro study with H. contortus was carried out to see the anthelmintic effect of this drug egg hatching and larval paralysis using NPK as concentration of 1, 3, 5, 10, 20, 30, 40, 50, 70 and 100 %. Contraction of uterus with drug, number of expelled eggs by female worm had significantly (P<0.05) increased and expelling egg was dose dependent. Egg hatch was not affected and complete paralysis of worm was observed in 100% concentration of NPK at the end of 8 hours. Paralysis effect was also dose dependent. This study has proved that NPK has the ability to increase uterine contraction of female H. contortus thus, resulting in expulsion of numerous numbers of eggs than normal. This effect could be used in harvesting more eggs in quicker time for using Egg hatch assay.Further, NPK has also moderate paralytic activity of H. contortus.

The ciliates are present in the digestive tract of adult cattle as commensals helping for digesti... more The ciliates are present in the digestive tract of adult cattle as commensals helping for digesting plant fibres. Buxtonellasulcata is one of such ciliates identified in colon. In the recent past the occurrence of this ciliate in clinical cases of enteritis in calves and cows have been increasingly reported indicating its pathogenicity in pre-ruminant calves and adult cows. This study reports on the incidence of buxtonellosis in organised and unorganised dairy farms in Chennai, Tamil Nadu. The faecal samples collected from the calves and cows with the history of watery diarrhoea in two organized (n=62) and six unorganized dairy farms (n=76) in Chennai. The samples were subjected to coprological examination as per the standard laboratory methods. The incidence of B. sulcata infection in organized and unorganized dairy farms recorded in this study were 35.48% and 54.95% respectively based on the identification of cysts of B.sulcata in diarrhoeic faeces. The cyst per gram (CPG) of faec...

Journal of Veterinary Parasitology, 2018

Blastocystis, a zoonotic protozoan found in the intestinal tracts of a wide range of animals, has... more Blastocystis, a zoonotic protozoan found in the intestinal tracts of a wide range of animals, has not been reported from non-human hosts from India so far. Organisms indistinguishable from Blastocystis sp. were identified in the Giemsa stained intestinal scrapings collected from carcasses of piglet and poultry that were brought for necropsy to the Central University Laboratory, Chennai. The 'central vacuole forms' of the parasite, with number of nuclei ranging from 1 to 12 were identified. The intensity of infection was low, with less than one organism per oil immersion field, indicating that their presence was unconnected to the cause of death. Caecal scraping was found to be more ideal than duodenal scraping for the diagnosis of Blastocystis, and can be a potential specimen for definitive diagnosis. Identical organisms were also detected in the dung samples of a buffalo calf which showed clinical signs of diarrhoea The presence of Blastocystis in food animals acquires publ...

In - vivo evaluation of the efficacy of test anti - coccidial efficacy of salinomycin and amproli... more In - vivo evaluation of the efficacy of test anti - coccidial efficacy of salinomycin and amprolium carried out in two different trials in 228 commercial chicken revealed 100% efficacy against mixed eimeria sp on comparative evaluation with standed in feed anti - coccidials. Ther e was marked reduction in the oocyst output with increased body weight gain and improved feed conversation efficiency in the experimental study .