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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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  • ThesisItemOpen Access
    SERO-PREVALENCE OF JAPANESE ENCEPHALITIS IN PIGS AND ITS CORRELATION WITH MOSQUITO DENSITY AND ITS HUMAN OCCURRENCE IN SOME ENDEMIC LOCALITIES OF ASSAM
    (Assam Agricultural University, Khanapara, Guwahati, 2016-07) BARUAH, ADITYA; HAZARIKA, R. A.
    Japanese encephalitis (JE) is a re-emerging mosquito-borne flaviviral zoonotic disease and a major cause for concern to childhood mortality and morbidity in countries of Southeast Asia including India. The disease has appeared in sporadic as well as epidemic forms since 1976 in Assam. The present study was envisaged to study the sero-prevalence of JE in pigs, the density pattern of mosquito vectors in JE endemic localities and to draw an association between the occurrence of JE in humans with serological studies in pigs and mosquito density. A total of 335 blood samples of pigs were collected during the study period from 8 districts of Assam with special reference to Sivasagar district and Hajo area of Kamrup (Rural) district. Out of these many samples screened, 31.34% were found positive for antibodies against JEV. The highest sero-prevalence of JEV was observed during monsoon (50.40%) and no sero-prevalence was recorded in the months of December, January, February and March. Sex-wise sero-prevalence showed higher sero-prevalence in males (39.84%) than females (35.38%). Large Black cross breed of pigs (26.00%) were found to carry JEV infection. Based on the topography of the pig farms, the sero-positivity was recorded significantly higher in wet land (47.79%) than that of dry land (23.67%). JEV sero-prevalence of pigs in farms, which were located nearer to the rice fields and stagnant water showed significantly higher sero-positivity (39.77%) than the farms located away from the rice fields and stagnant water (22.01%). Based on rearing practices of pigs, the sero-positivity was recorded highest in free-range system (47.37%) and least in tethering (21.00%) practice. Distribution of JEV infection in pigs was recorded highest in Sivasagar district (35.20%) and least in Hajo area (9.89%) of Kamrup (Rural) district. An additional study on sero-prevalence of JEV in other domestic animals including horses, cattle and goats recorded a very high sero-positivity (60.00%) in horses. Densities of Cx. gelidus (26.13%), Cx. tritaeniorhynchus (24.12%), Armigeres spp. (19.41%), Cx. vishnui (12.06%), Mansonia spp (8.54%) and Cx. quinquefasciatus were categorized as dominant species whereas, Cx. whitmorei and Anopheles spp (4.52 each) were categorized as sub-dominant species in the study area. A positive correlation was observed among human JE cases, JEV sero-prevalence in pigs and mosquito density in Sivasagar district and Hajo area of Kamrup (Rural) district of Assam indicating an association existed among them.