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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
    Ectoparasites of goat with special reference to mange mite
    (College of Veterinary Science, Assam Agricultural University, Khanapara Campus, 2022) Borah, Debjani; Neog, Ranjeet
    A study was conducted in and around Guwahati for a period of one year from July 2021 to June 2022 to study the prevalence of different ectoparasites in goats. Different ectoparasites in goat found to be prevalent in this area were ticks (67.32 %), lice (43.02%), flea (68.44%) and mite (14.38%). Haemaphysalis bispinosa, H. hystricis, Rhipicephalus (Boophilus) microplus, Linognathus africanus, Damalinia (Bovicola) caprae, Ctenocephalides felis orientis, C. canis, C. felis felis and Sarcoptes scabiei var. caprae were the prevalent species of ectoparasites found throughout the year. In the present study Linognathus africanus and Damalinia (Bovicola) caprae were reported for the first time in goat in Assam. Seasonal prevalence of the ectoparasites was studied in different climatic conditions of Assam namely temperature, humidity and rainfall. Prevalence of tick was found to be highest in the pre-monsoon season (March, April and May). The highest prevalence of lice, flea and mite was observed in the winter season (December, January and February). A significantly higher prevalence of tick and flea was observed in female goats than the male ones whereas prevalence of lice and mite was not dependent on the gender of the goats examined. Prevalence of ticks and mite was significantly higher in goats aged more than 6 months. Significantly higher prevalence of flea was observed in the goats below 6 months of age. Prevalence of lice was independent of age. Doramectin (Advanto®) @1ml/50kg b.wt. showed better results in the treatment of goats naturally infested with Sarcoptes scabiei var. caprae in comparison to Ivermectin (Parid pour-on @1ml/10kg b.wt.) and Castor oil (an indigenous knowledge-based acaricide). The haemoglobin, PCV, TEC and lymphocyte levels in the treated goats were observed to have a highly significant increase (p<0.01) post-treatment (day 48). The TLC, neutrophil and eosinophil levels showed a highly significant decrease (p<0.01) and monocyte per cent were observed to have a significant decrease (p<0.05) after treatment (day 48) with the three acaricides. Oxidative stress parameters revealed that malondialdehyde (MDA) level was seen to be higher and the superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities were seen to be lower in goats infested with S. scabiei var. caprae mite in comparison to their normal range of healthy goats kept as control. This implies that the goats infested with S. scabiei var. caprae were in a state of oxidative stress prior to the treatment(s) and with the progress of the treatment(s), the goats showed a significant decrease in MDA level and increase in SOD and GPx activities indicating a reduction of oxidative stress in the treated goats due to the treatment(s).