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Assam Agricultural University, Jorhat

Assam Agricultural University is the first institution of its kind in the whole of North-Eastern Region of India. The main goal of this institution is to produce globally competitive human resources in farm sectorand to carry out research in both conventional and frontier areas for production optimization as well as to disseminate the generated technologies as public good for benefitting the food growers/produces and traders involved in the sector while emphasizing on sustainability, equity and overall food security at household level. Genesis of AAU - The embryo of the agricultural research in the state of Assam was formed as early as 1897 with the establishment of the Upper Shillong Experimental Farm (now in Meghalaya) just after about a decade of creation of the agricultural department in 1882. However, the seeds of agricultural research in today’s Assam were sown in the dawn of the twentieth century with the establishment of two Rice Experimental Stations, one at Karimganj in Barak valley in 1913 and the other at Titabor in Brahmaputra valley in 1923. Subsequent to these research stations, a number of research stations were established to conduct research on important crops, more specifically, jute, pulses, oilseeds etc. The Assam Agricultural University was established on April 1, 1969 under The Assam Agricultural University Act, 1968’ with the mandate of imparting farm education, conduct research in agriculture and allied sciences and to effectively disseminate technologies so generated. Before establishment of the University, there were altogether 17 research schemes/projects in the state under the Department of Agriculture. By July 1973, all the research projects and 10 experimental farms were transferred by the Government of Assam to the AAU which already inherited the College of Agriculture and its farm at Barbheta, Jorhat and College of Veterinary Sciences at Khanapara, Guwahati. Subsequently, College of Community Science at Jorhat (1969), College of Fisheries at Raha (1988), Biswanath College of Agriculture at Biswanath Chariali (1988) and Lakhimpur College of Veterinary Science at Joyhing, North Lakhimpur (1988) were established. Presently, the University has three more colleges under its jurisdiction, viz., Sarat Chandra Singha College of Agriculture, Chapar, College of Horticulture, Nalbari & College of Sericulture, Titabar. Similarly, few more regional research stations at Shillongani, Diphu, Gossaigaon, Lakhimpur; and commodity research stations at Kahikuchi, Buralikson, Tinsukia, Kharua, Burnihat and Mandira were added to generate location and crop specific agricultural production packages.

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20221
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Subject: Veterinary Surgery and Radiology × Author: Das, Rimjhim × Start date: 2019 × Type: Thesis ×
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    ThesisItemOpen Access
    Diagnosis of canine heart diseases with special reference to transthoracic echocardiography
    (College of Veterinary Science, Assam Agricultural University, Khanapara Campus, 2022-09) Das, Rimjhim; Kalita, Dwijen
    A total of 14050 dogs were registered; out of which 88 dogs were suspected for heart diseases based on clinical manifestations and 38 dogs with overall incidence rate of 0.27% were diagnosed with various heart diseases based on thoracic radiography, electrocardiography and two-dimensional, M-mode and colour-flow Doppler echocardiography. The incidence of cardiac affections were found to be highest in Labrador Retriever (39.47%), male dogs (63.15%), age group of >6-9 years (31.57%). Radiographically 20 dogs were diagnosed with cardiac affections and found Pleural effusion with highest occurrence (23.68%), followed by left sided cardiomegaly (21.05%) and right sided cardiomegaly (7.89%). Electrocardiographically 30 dogs were diagnosed positive for cardiac affections with highest occurrence of Sinus bradycardia (23.68%) followed by P-mitrale (18.42%), ventricular hypertrophy and pericardial effusion (7.89% each), 1st degree AV block, Ppulmonale and myocardial disease (5.26% each), ventricular septal enlargement and atrial fibrillation (2.63% each). However, transthoracic echocardiography was taken as gold standard diagnostic modality with which 38 dogs were diagnosed positive for heart diseases. The most frequently diagnosed cardiac disease using 2D-mode, M-mode were Dilated Cardiomyopathy (DCM) (47.36%), Left atrial (LA) enlargement (15.78%), Pericardial effusion, Left ventricular posterior wall (LVPW) hypertrophy (7.89%) and Right ventricular (RV) hypertrophy(5.26%). With Doppler mode echocardiography the occurrence of Mitral valve insufficiency was found to be highest (65.78%) followed by Tricuspid valve insufficiency (52.63%) and aortic valve insufficiency (10.52%). The haematological parameters i.e. TEC, TLC, thrombocytes, lymphocytes, granulocytes, monocytes and Hb and biochemical parameters i.e. SGPT, SGOT, BUN, Creatinine, Total protein, albumin, sodium and potassium revealed non-significant (p>0.05) role in diagnosis of cardiac affections in dogs. However, serum calcium and non-specific LDH appeared to be significantly (p≤0.05) influenced by occurrence of heart disease and both the parameters were found reliable for diagnosis of heart diseases. The serum Ca and non specific LDH can be used together in combination to improve the efficacy of diagnosis for cardiac affections. The sensitivity, specificity and accuracy of thoracic radiography was found to be 58.82%, 76.19% and 65.45% respectively upon taking echocardiography as gold standard diagnostic method. Whereas, the sensitivity, specificity and accuracy of electrocardiography was found to be 81.08 %, 60% and 76.60% respectively. Based on the present study electrocardiography was found to be more efficient in diagnosis of heart diseases for dogs in comparison to thoracic radiography. However, transthoracic echocardiography using two-dimensional, m-mode and colour-doppler has been found to be the most efficient diagnostic modality in diagnosis of heart diseases in dogs as 43.18% (n=38) were diagnosed positive out of 88 suspected cases for heart disease presented during the study period.