Theses & Dissertations

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MOLECULAR EPIDEMIOLOGY OF TICK BORNE HAEMOPARASITIC DISEASES IN DOGS IN CHENNAI
(2022) PAGADALA REVATHI; TANUVAS; VIJAYA BHARATHI M; MADHANMOHAN M; BHASKARAN RAVI LATHA; VIJAYARANI
The present study was aimed to assess the molecular epidemiology of various tick borne haemoparasitic diseases in dogs and the current circulating status of these pathogens in ticks as well as in dogs presented at the Madras Veterinary College Teaching Hospital, Madras Veterinary College and also in private veterinary clinics, Chennai during the period between December 2019 and August 2021. In this study, a total of 1446 samples were collected which comprised of 482 peripheral blood smears, 482 whole blood and 482 serum samples from 482 dogs presented with the suspicion of haemoparasitic diseases. Further, a total of 548 ticks (335 female, 213 male) from 47 infested dogs were also collected. Peripheral blood smears (482) were screened by conventional light microscopy. Whole blood (482) and pooled whole tick homogenates (47) were subjected to molecular methods for the presence of Babesia vogeli, Babesia gibsoni, Babesia canis, Hepatozoon canis, Ehrlichia canis and Anaplasma platys in dogs. Epidemiological attributes, haematology and serum biochemical parameters were analysed for the individual diseases. Moreover, a rapid and sensitive DNA based Loop-Mediated Isothermal Amplification (LAMP) assay was assessed for its efficacy in the early diagnosis of Babesia gibsoni and to formulate treatment protocols. Among 482 samples tested, the prevalence of B. vogeli, B. gibsoni, H. canis and E. canis in dogs were 2.5, 1.24, 1.04 and 4.14 per cent respectively by conventional light microscopy. But, none of the samples were positive for A. platys by microscopy. Whereas, the prevalence of B. vogeli, B. gibsoni, H. canis, E. canis and A. platys in dogs were 7.47, 4.15, 6.64, 16.18 and 2.5 per cent respectively by PCR revealing its high sensitivity and specificity. However, none of the dog blood samples were found positive for B. canis in the studied region either by microscopy or molecular techniques. The overall prevalence of canine tick borne haemoparasitic diseases in Chennai was 32.5 per cent for at least one pathogen. Amongst which, E. canis being the most prevalent with 16.18 per cent followed by 7.47 per cent for B. vogeli, 6.64 per cent for H. canis, 4.15 per cent for B. gibsoni and 2.5 per cent for A. platys by molecular assay.
Open Access
MOLECULAR EPIDEMIOLOGY OF CANINE HAEMOPARASITIC INFECTIONS IN NAMAKKAL
(TANUVAS, 2016) Kalaivannan, M; Saravanan, S; Palanivel, KM; Ponnudurai, G; TANUVAS
ln the present study, the prevalence of haemoparasitic infections in dogs in Namakkal district was assessed with the identification of the transmitting vectors involved and associated risk factors in the epidemiology. The haematological and biochemical status in positive cases were also analysed. ln this study, a total of 150 dogs, irrespective of their age, sex, breed and health status presented to TVCC, VCRI, Namakkal from September, 2015 to April, 2016 were screened. The overall prevalence of haemoparasitic infections was found to be 26.0 per cent with a prevalence of 26.0 per cent by PCR and 1.32 per cent by microscopic examination of blood smears.
Open Access
STUDIES ON THE PREVALENCE OF BRUCELLOSIS IN CANINE
(TANUVAS, 2016) Shefeena, Shereef; Ganesan, PI; Dhinakar Raj, G; Ramesh, A; TANUVAS
A study Was carried out to assess the prevalence of brucellosis in canine by serology and culture. The samples were collected from Small Animal Out- Patient Ward at Madras Veterinary College, Chennai-7; Veterinary University Peripheral Hospital at Madhavaram milk colony, Private Veterinary Clinics Private kennels of Arakkonam, Madhavaram milk colony, Thiruvotriyur, Ambathur and Minjur. A total of 300 dogs were screened, for which 300 serum samples, 150 whole blood samples, 96 vaginal swabs, 42 aborted fetus, 44 fetal membrane, 5 semen samples, 3 urine samples were collected.
Open Access
EPIDEMIOLOGICAL STUDIES ON BOVINE BRUCELLOSIS
(TANUVAS, 2016) Naveen Kumar, V; Vijaya Bharathi, M; Sekar, M; Porteen, K; TANUVAS
In the present study a total of 2212 samples (821 Whole blood samples, 821 serum samples, 483 milk samples and 87 aborted materials) were collected from several districts of Tamil Nadu to assess the current epidemiological status of Brucella infection in the study area.
Open Access
EPIDEMIOLOGY OF BOVINE VIRAL DIARRHOEA IN CATTLE
(TANUVAS, Chennai, 2017) Krishnakumar, S.; Palanivel, K.M.; Selvaraju, G.; Ponnudurai, G.; Sukumar, K.; Ronald, B. Samuel Masilamoni; TANUVAS
The present study has been taken up on sero and molecular epidemiology of bovine viral diarrhea (BVD), economic impact and risk factors associated in dairy cattle of north western zone of Tamil Nadu. This work was carried out in north western zone of Tamil Nadu which includes Coimbatore, Erode, Tirupur and Karur districts between 2014 and 2016.
Open Access
Epidemiological Studies On Toxoplasma Gondii In Domestic Cats And Dogs In And Around Chennai
(Tamil Nadu Veterinary and Animal Sciences University, 2005) Bharathi, M. Vijaya; TANUVAS; Kandavel, E.
Open Access
Untitled
(TANUVAS, 2004) Selvi, D.; TANUVAS; Nedunchelliyan, S.; Gunaseelan, L.; Kirubakaran, J. John
Open Access
Seroprevalence of EHV - 1 and EHV - 4 in Equids of Tamilnadu
(TANUVAS, 2004) Parameswaran, T.; TANUVAS; Nedunchelliyan, S.; Kandavel, E.; Paul, W. Manohar
Open Access
Comparison of Standard Tube Agglutination Test, Rose Bengal Test, Dot-Elisa and Elisa in the Diagnosis of Bovine Brucellosis
(TANUVAS, 2004) Anuradha, P.; TANUVAS; Ganesan, P.I.; Kandavel, E.; Thangavelu, A.

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