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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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20161
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Subject: Veterinary Gynaecology and Obstetrics × Author: Baishnob, Rina × Thesis Type: M.V.Sc. ×
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    ThesisItemOpen Access
    PATTERN OF SYNCHRONIZED OESTRUS AND SUBSEQUENT REPRODUCTIVE PERFORMANCE IN HAMPSHIRE CROSSBRED PIG
    (College of Veterinary Science Assam Agricultural University Khanapara, Guwahati-781022, 2016-07) Baishnob, Rina; Ahmed, K.
    A total of 37 apparently healthy cyclic Hampshire crossbred pigs ranging from 7 months to 2 years of age maintained at All India Co-ordinated Research Project on Pig, Mega Seed Project on Pig and 30-Sow Unit, College of Veterinary Science, Khanapara, Guwahati-22 were selected randomly and used for the present study. The experimental animals were divided irrespective of stage of oestrous cycle into Group I and Group II. A total of 25 animals that included 16 gilts and 9 sows of Group I were injected i/mly with 400 IU PMSG (Folligon) and 200 IU hCG (Chorulon). The animal which exhibited oestrus within 7 days from the day of treatment (10 gilts and 3 sows) was utilized for further study. For the Group II, a total of 12 pigs comprising 8 gilts and 4 sows were selected and were not assigned to any treatment. They were observed for natural occurrence of estrus and considered as untreated control. The percentage of pigs showing synchronized oestrus was 62.50 in gilts and 33.33 in sows. The mean interval from oestrus synchronization treatment to onset of oestrus was 3.00 ± 0.15 days in gilts and 4.00 ± 0.58 days in sows. The mean duration of oestrus in synchronized gilts was 81.6 ± 3.49 hrs while in untreated control gilts it was 51.00 ± 1.96 hrs. In sows the mean duration was 112.00 ± 4.00 hrs in synchronized and 90.00 ± 3.46 hrs in control animals. The duration of oestrus in both gilts and sows was longer in treated animals than in untreated control. Most frequent behavioural signs of synchronized oestrus were nervousness. frequent grunt, seeking male and lordosis response occurring in the frequencies of 100, 90, 100 and 100 respectively in gilts and 100, 100, 100, and 100 respectively in sows. Corresponding frequencies were 87, 75, 75 and 62.50 per-cent in control gilts and 50, 75, 75 and 50 percent in control sows. Swelling of vulva, pinkish vulva and vaginal mucous discharge were the most common physical signs of estrus exhibited by all gilts and sows following synchronization treatment. Intensity of oestrus was more following synchronization treatment in both gilts and sows as compared to that in untreated control animals. The mean gestation length was recorded as 113.67 ± 0.29 and 114.38 ± 0.71days in synchronized and control gilts respectively while in synchronized and control sows the figures were 114.33 ± 0.33 and 114.00 ± 0.00 days respectively. Statistical analysis revealed no significant difference in the mean gestation length between synchronized and control animals. The mean litter size at birth in oestrus synchronized gilts was recorded as11.66 ± 1.41and in control gilts it was 8.63 ± 0.37. In the case of synchronized sows it was recorded as 12.66 ± 0.33 and in control sows 10.00 ± 0.71. The difference in mean litter size at birth between synchronized and control gilts were highly significant (P˂ 0.01) whereas in case of sows it was significant (P˂0.05). The mean litter weight in synchronized and untreated control gilts were recorded as 10.62 ± 0.36 and10.01 ± 0.64 kg respectively. The values were 13.73 ± 0.41 and 11.40 ± 0.57 kg for synchronized and control sows respectively. Results of ʻtʼ test revealed significant difference in mean litter weight between synchronized and control sows only. The incidence of still birth was 7.62 and 2.90 per cent in treated and control gilts while in case of sows it was 2.60 and 2.50 per cent in synchronized and control animals respectively. The incidence of runt piglet was 4.75 and 1.45 per cent in synchronized and control gilts respectively while it was not recorded in sows. Conception rates in all synchronized as well as control pigs were above 90 per cent.