Browsing by Author "Thirunavukkarasu, P."
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OtherItem Open Access Acetaminophen Toxicity in a Tom Cat(TANUVAS, Chennai, 2012-07) Nesaraj, V.G. Jabin; Kalyaan, U.S.; Chandrasekar, M.; Selvaraj, P.; Jeyaraja, K.; Thirunavukkarasu, P.; TANUVASOtherItem Open Access Age at Induced Moulting of Commercial Laying Hens on Post-Moult Laying Performance(TANUVAS, Chennai, 2007-08) Thirunavukkarasu, P.; Moorthy, M.ArticleItem Open Access Albumen quality of eggs laid by induced moulted hens(Indian Poultry Science Association, 2008-04) Thirunavukkarasu, P.; Moorthy, M.; Viswanathan, K.; TANUVASA study was carried out to find out the effect of induced moulting of commercial SCWL laying hens at 60, 65 and 70 weeks of age group. A control group was kept without moulting at their respective ages. The layers were reared in cages for the entire experimental period adopting standard managemental and moulting practices. The birds, which were force moulted at the age group of 60, 65 and 70 weeks, had numerically higher egg production, lesser broken and shell less eggs after induced moulting, as compared to their respective control groups. Moulting improved the egg quality characteristics viz. albumen index and Haugh unit. As per experimental results observed, it is concluded that moulting can be induced in layers at the age of 70 weeks for improved egg quality characteristics.ArticleItem Open Access Broncho Alveolar Lavage Fluid (BALF) Cytological Findings in Bovine Respiratory Disorders (BRD)(Indian Journal of Animal Research, 2005) Thirunavukkarasu, P.; Senthilkumar, G.; Balachandran, C.; Vasu, K.; TANUVAS"Endoscopic evaluation of Bovine Respiratory Disorders' was conducted on ten apparently healthy cattle and twenty-seven clinical cases with the objective of studying the incidence, haemato biochemistry, and bronchoscopic changes. Ten apparently healthy cattle belonging to different breeds, different age groups and sexes were selected for obtaining normal values. Twenty-seven cattle with respiratory disorders were selected by history, clinical findings, haernatology, biochemistry, bronchoscopy and broncho alveolar lavage cytology. Broncho alveolar lavage cytology was found to be more sensitive for diagnosis of respiratory disorders and macrophages and neutrophils were the predominant cells in BALF of control and clinical cases respectively.ArticleItem Open Access Bronchoalveolar Lavage Fluid Bacteriology in Bovine Respiratory Disorders(Indian J. Vet. Med., 2015) Thirunavukkarasu, P.; Ramesh, A.; Balachandran, C.; Srinivasan, S.R.; Prathaban, S.; Dhanapalan, P.; TANUVASThesisItem Open Access CLINICAL AND LABORATORY EVALUATION OF ACQUIRED DIFFUSE INFLAMMATORY DISEASES OF BRAIN IN DOGS(TANUVAS, Chennai, 2017) Harish, L.J.; Thirunavukkarasu, P.; TANUVAS; Jeyaraja, K.; Nagarajan, K.This prospective study was designed to evaluate acquired diffuse inflammatory brain diseases in dogs. The goal was to study the incidence and clinico-pathological evaluation of various acquired diffuse inflammatory brain diseases in dogs. Suspected neurologically deficit animals were selected and categorised into two categories involving infectious and non-infectious inflammatory brain diseases which were compared with the apparently healthy animals which served as the control and incidence of infectious and non-infectious inflammatory brain diseases was recorded.ThesisItem Open Access Doppler Echocardiographic Assessment Of Acquired Heart Diseases In Dogs(Tamil Nadu Veterinary and Animal Sciences University, 2014) Thirunavukkarasu, P.; TANUVAS; Nagarajan, B.; Kumanan, K.; Nambi, A.P.; Ramesh, S.Acquired heart diseases (AHD) are common and often fatal when it leads to CHF in dogs and it occurs most often secondary to degenerative mitral valve disease (MVD), dilated cardiomyopathy (DCM), pericardial diseases and Hypertrophic cardiomyopathy (HCM). Early recognition of AHD is of clinical importance. Tissue Doppler echocardiography is an ideal tool to evaluate patients with acquired heart diseases, offering the potential to improve early identification and management of AHDS. The objectives of this study were to quantify the global and regional myocardial function by Tissue Doppler echocardiography in acquired heart diseases of dogs; to compare the diagnostic efficacy of different modes of Tissue Doppler echocardiography in dogs; and to establish the usefulness of biochemical marker in diagnosis of acquired heart diseases in dogs. 106 animals with acquired heart diseases were selected based on echocardiographic findings from the animals that were brought to MVC teaching hospital and they were grouped as apparently healthy dogs, DCM, MVD, Pericardial diseases and HCM groups. Parameters of the study included Prevalence analysis, Medical history, Clinical presentation, Baseline Haematology panel, Baseline serum biochemistry panel, Radiography, Doppler BP, ECG, Echocardiographic indices such as 2-D echocardiographic indices, M-Mode Echocardiographic indices and Colour flow Doppler, Tissue Doppler Imaging and NT-proBNP Assay. The incidence of AHDs was found to be 0.37 per centin the five semester study period. Labradors and Spitz were found to be commonly affected with DCM and MVD respectively. Older male dogs were found to be more commonly affected. The observed chief complaints included inappetance, exercise intolerance, abdominal enlargement, syncope and weakness. Tachycardia, ascites and murmurs were the common clinical signs in all the groups of AHDs. Haematological assessment showed no significant changes. Serum biochemical assessment showed significant hypernatremia in all groups except HCM. Radiographic signs of AHDs included cardiomegaly, pulmonary oedema and left atrial enlargement. Dogs with DCM and pericardial effusion had significantly elevated VHS and confirmed the presence of acquired heart disease. ECG findings in AHDs were the DCM dogs had characteristic arrhythmic pattern of atrial fibrillation in 20.69 per cent cases and atrial flutter in 8.62 per cent of cases. MVD group dogs had atrial enlargement in 51.28 per cent; pericardial effusion group had low voltage QRS complex and electrical alternans in 83.33 per cent; and HCM group had ventricular enlargement in 100.00 per cent cases. Echocardiographic findings in DCM were LV dilatation, LA dilatation, increased LA/Ao ratio, decreased LVFW and septal thickness, decreased FS, increased LVIDd &LVIDs, increased EPSS and secondary regurgitation of mitral valve and Tricuspid valve; and in MVD were LA dilatation, increased LA/Ao ratio, FS<60 per cent with cardiac failure were identified and mild, moderate and severe MR was found in colour flow Doppler;in pericardial effusion were echo-free space around ventricular chambers, Right Atrial collapse indicating tamponade; and in HCM were LV hypertrophy, SAM and increased FS were observed. In pulsed wave tissue Doppler highly significant decrease in Sm and Em/Am ratio all groups; and significant decrease in Em in all groups were observed; and significant increase in Am in pericardial effusion and HCM were observed. Very typical Em/Am ratio reversal (Em/AM<1) was observed in pericardial effusion and HCM group. In NT-proBNP assay a highly significant increase in levels was observed in DCM, MVD with systolic failure, MVD without systolic failure and in occult cardiac diseases which indicated that this marker is highly sensitive and specific for cardiac diseases. Post-mortem examination of DCM dogs reveals the heart was enlarged, globular, and flabby in appearance with rounded apex due to generalized ventricular dilatation on gross pathology and on transverse biventricular slice of heart the marked dilatation of lumen, attenuation of papillary muscles and thinning of free walls of ventricles were observed. On histopathology left ventricular myocardium showed attenuated wavy fibre type of change. In this study the following conclusions made were Tissue Doppler Echocardiography of acquired heart diseases the regional and global velocities were highly significantly decreased in dogs; Pulsed wave Tissue Doppler Echocardiography is very effective in assessing the peak myocardial velocities in real time, when compare to 2D Tissue Doppler Echocardiography and Colour M-mode Tissue Doppler Echocardiography in dogs and the cardiac biomarker NT-proBNP was very effective and specific marker and very useful in diagnosing and categorizing the cardiac diseases in dogs.ArticleItem Open Access Echocardiographic Parameters and Indices in Pug dogs(Intas Pharmaceuticals Ltd., 2020-06) Kavitha, S.; Jeyaraja, K.; Thirunavukkarasu, P.; Thirunavukkarasu, P.S.; Chandrasekaran, D.; TANUVASThe echocardiographic values show significant breed variations and it is important to know the normal echocardiographic values for each breed of dog. The study was conducted to record the echocardiographic parameters and indices in clinically normal pug dogs. The Pug dogs included were presented for routine checkup, vaccination and deworming. The dogs were subjected to echocardiographic examination using Aloka SSD 3500 Echocardiograph. 2D, M-mode and Doppler echocardiographic assessment were carried out. Two dimensional echocardiographic parameters such as LA, AO & LA/AO values were lower than other breeds of dogs. M- mode echocardiographic parameters such as left ventricular dimensions were lower than other breeds of dogs. Fractional shortening was slightly higher when compared to similar bodyweight dogs. Mean velocity of blood flow across mitral valve, tricuspid valve, aortic valve and pulmonary valve recorded in normal healthy pugs were slightly lower than other breeds.OtherItem Open Access Effect of Induced Moulting on Egg Quality Parameters in Commercial Layers(Indian Poultry Science Association, 2016-09) Thirunavukkarasu, P.; Moorthy, M.; Shamsudeen, P.ArticleItem Open Access Efficacy of Amikacin in the Management of Recurrent Staphylococcal Pyoderma in Dogs(Indian Veterinary Association, Chennai, 2019-07) Meena, A.; Thirunavukkarasu, P.; Kavitha, S.; Ananda Chitra, M.; TANUVAS30 dogs with a history of recurrent pyoderma presented to small animal dermatology unit of Madras veterinary college included in this study. Most of the cases already given a course of different antibiotics but no clinical improvements were noticed. Sterile skin swabs collected from all the cases were subjected for culture and antibiogram. Out of 30 samples 17 were positive for multi drug resistance staphylococcus. Out of 17 samples 11 showed sensitivity to amikacin, 5 showed sensitivity to amikacin with enro oxacin and one case showed sensitivity to amikacin with azithromycin. The affected cases treated with appropriate antibiotics showed good clinical outcome.ArticleItem Open Access EGG PRODUCTION PERFORMANCE OF INDUCED MOULTED WHITE LEGHORN LAYERS(TANUVAS, 2009-05) Thirunavukkarasu, P.; Moorthy, M.; Viswanathan, K.; Edwin, S.C.; TANUVASOne hundred and forty four commercial Single Comb White Leghorn spent hens of 60, 65 and 70 weeks age group were purchased and reared for adaptation up to 61, 66 and 71 weeks of age. Then birds were weighed, leg banded and randomly allotted into six treatment groups with three replicates of eight birds each.ArticleItem Open Access Emergency Management of Concurrent Diabetic Ketoacidosis and Leptospirosis in a Spitz(Indian Veterinary Journal, 2012-08) Vijayalakshmi, P.; Selvaraj, P.; Chandrasekaran, D.; Padmanath, K.; Thirunavukkarasu, P.; Nambi, A.P.; TANUVASA case of diabetic ketoacidosis with concurrent leptospirosis and development of severe anemia with icterus in a male Spitz was investigated. The clinical signs and biochemical findings were characteristic. The conventional treatment (Injection Insulin) with supportive therapy (fluids and antibiotics) could not save the dog.ArticleItem Open Access Haemato-biochemical Changes in Bovine Respiratory Disorders (BRD)(Indian Journal of Veterinary Medicine, 2005) Thirunavukkarasu, P.; Senthilkumar, G.; Balachandran, C.; Dhanapalan, P.; Vasu, K.; TANUVASOtherItem Open Access Idiopathic Dilated CArdiomyopathy (DCM) in a Labrador Retreiver - A Case Report(TANUVAS, Chennai, 2012-07) Nair, Sooraj V.; Jeyaraja, K.; Chandrasekar, M.; Selvaraj, P.; Nambi, A.P.; Thirunavukkarasu, P.S.; Thirunavukkarasu, P.; TANUVASArticleItem Open Access INDUCED MOULTING IN AGED HENS AND ITS EFFECT ON ALBUMEN QUALITY(TANUVAS, 2011-05) Thirunavukkarasu, P.; Moorthy, M.; TANUVASA study was carried out to find out the effect of induced moulting of commercial SCWL laying hens at 60, 65 and 70 weeks of age group. A control group was kept without moulting at their respective ages. The layers were reared in cages for the entire experimental period adopting standard managemental practices. The layers were fed commercially available layer diet. After 28 days period of egg production (pre - moult), the layers were subjected to induced moulting by feed and water restriction followed by ad - libitum feeding and had free access to wholesome water. Seventeen hours photoperiod was provided daily through out the post - moult laying period. The birds, which were force moulted at the age group of 60, 65 and 70 weeks, had numerically higher egg production, lesser broken and shell less eggs after induced moulting, as compared to their respective control groups. Moulting improved the egg quality characteristics viz. albumen index and Haugh unit. As per experimental results observed, it is concluded that moulting can be induced in layers at the age of 70 weeks for improved egg quality characteristics.OtherItem Open Access Management of Idiopathic Status Epilepticus in a Dog(2012-07) Singh, Vikram; Kavitha, S.; Thirunavukkarasu, P.; Gowri, B.; TANUVASOtherItem Open Access Management of Mitral Valve Insufficiency with Heart Failure in a 13 year Old Spitz(TANUVAS, Chennai, 2012-07) Kalyaan, U.S.; Nesaraj, V.G. Jabin; Jeyaraja, K.; Selvaraj, P.; Thirunavukkarasu, P.; Chandrasekar, M.; TANUVASOtherItem Open Access Non-Silymarin Hepatoprotectant in Successful Treatment of Hepatocellular Injury in a Cat - A Case Report(TANUVAS, Chennai, 2017-08) Selladurai, Praveen; Jayanthy, C.; Thirunavukkarasu, P.; TANUVAS