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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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20172
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Subject: Animal Reproduction and Gynecology × Start date: 2016 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    UPSCALING OF BOVINE INFERTILITY COUNTERING TECHNOLOGIES
    (Assam Agricultural University, Khanapara, Guwahati, 2017-07) DUTTA, LAKSHYA JYOTI; Nath, K.C.
    A study was conducted on a total of 909 crossbred cows maintained in 60 private farms of Kamrup, Darrang and Lakhimpur districts of Assam with the primary objectives of identification and characterization of common reproductive disorders and studying fortification needs of commonly practised therapeutic techniques for the treatment of infertility. Incidence of reproductive disorder was determined based on breeding history provided by the animal owners and clinico-gynaecological examination of 133 problem breeder cows. The study revealed that overall incidence of infertility was 14.63 per cent comprising 5.28 per cent for repeat breeding with uterine infection, 3.41 per cent for repeat breeding without uterine infection, 2.97 per cent for true anoestrus, 2.53 per cent for silent oestrus and 0.11 per cent for each of pyometra, ovarian cyst, infantile genital organ and ovario-bursal adhesion. Out of the total number of infertile cows 59.39 per cent suffered from repeat breeding and 37.59 per cent anoestrus. Poor management system in respect of flooring, drainage, sunlight exposure, ventilation and roofing of the cattle shed was associated with higher incidence of infertility with the frequency of occurrence of 58.69, 28.10, 17.11, 51.28 and 21.47 per cent respectively against 12.28, 11.0, 12.60, 12.98 and 9.38 per cent for good flooring, good drainage, good sunlight exposure, good ventilation and good roofing system respectively. Feeding condition was normal in 48.33 per cent and poor in 51.66 per cent cattle farms. Incidence of infertility was 13.36 and 15.78 per cent under normal and poor feeding conditions respectively. Of the infertile cows 53.38 per cent had body condition score between 2.5 and 3.5 and 46.61 per cent had the score less than 2.5. Out of repeat breeder cows with uterine infection 43.66 per cent had good body condition and 27.41 per cent poor body condition. Level of serum calcium, zinc, leptin, ghrelin and IGF-1didnot vary significantly between types of infertility. Level of phosphorus and iron was low in cows affected with repeat breeding due to infection. Serum oestrogen level remained significantly low in cows affected with silent oestrus and true anoestrus while level of progesterone was significantly higher in cows affected with silent oestrus. Treatment of silent oestrus in crossbred cows with double injection of PGF2α 11 days apart resulted in 100.00 per cent oestrus response and 66.66 per cent conception rate. Fortification of PGF2α with supportive treatment comprising oral bypass fat and mineral mixture and injectable phosphorus and vitamins did not improve conception rate. Supportive treatment alone when used in true anoestrus cows resulted in 83.33 per cent oestrus response and 50.00 per cent conception rate. Fortification of GnRH with supportive treatment did not improve conception rate in treating true anoestrus in cows. Fortification of intrauterine Lugol’s iodine with supportive treatment used for treating repeat breeding due to uterine infection resulted in higher post treatment conception rate of 83.33 per cent against 66.66 per cent obtained with Lugol’s iodine alone. The hormone hCG was the choice of drug for treatment of repeat breeding without uterine infection resulting in post treatment conception rate of 83.33 per cent which increased to 100.00 per cent when fortified with supportive treatment.
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    ThesisItemOpen Access
    VITRIFICATION OF FOLLICULAR OOCYTES AND IN VITRO FERTILIZATION IN PIG
    (Assam Agricultural University, Khanapara, Guwahati, 2017-01) KALITA, KRISHNA; DEKA, B. C.