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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
    EFFECTS OF CRYOPROTECTANTS IN VITRIFICATION OF GOAT OOCYTES
    (Assam Agricultural University, Khanapara,Guwahati, 2017-07) Majumdar, Kabita; Biswas, R.K.
    A total of 1243 ovaries were obtained from local abattoirs and processed for recovery of oocytes by aspiration and slicing techniques from follicles within 2-3 hours of slaughter. A total of 621 and 1124 oocytes were recovered from 545 and 698 ovaries by aspiration and slicing techniques respectively and graded on the basis of cumulus cell layer adhered to the zona pellucida . The mean recovery rate differed significantly between grades of oocytes in both the techniques and interaction between technique and grades of oocytes differed significantly. A total of 1745 immature good quality goat oocytes were vitrified by using cryoprotectants viz., Ethylene Glycol (EG), Propylene Glycol (PG) and DMSO and their combinations i.e., EG+PG, EG+DMSO and PG+DMSO @ 6M, 8M, 10M and 12M concentrations in the vitrification solution with the addition of 0.5M sucrose in basic solution that contained DPBS and FBS (4:1) and Gentamicin (50µg/ml). The equilibration solution was prepared by adding the cryoprotectant at the rate of half of the concentration used for vitrification and 0.25M sucrose in basic solution. The vitrification solution contained 0.5M sucrose and half of the total concentration for each cryoprotectant when vitrification of oocytes was done by combining two cryoprotectants. The mean rate of recovery of morphologically normal oocytes after vitrification differed significantly between concentrations in PG, EG and EG+PG. The highest mean recovery rate of morphologically normal vitrified oocytes was 74.16±4.44 per cent which was obtained in 10M EG+PG (1:1). The mean rate of recovery of morphologically normal vitrified oocytes was the highest (71.82±5.21%) in 0.5M sucrose contained in 5M EG+5M PG, although it did not differ significantly from concentrations of 0.25M, 0.75M and 1M sucrose. The mean percentages of in vitro matured oocytes following vitrification revealing expanded cumulus cells (61.67±2.54) and polar body extrusion (47.04±2.70) were significantly lower for vitrified oocytes as compared to the corresponding values (70.91±1.98% and 63.51±2.83 %) in non-vitrified oocytes .