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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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20221
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Subject: Animal Nutrition × Author: BARMAN, AJAY × Start date: 2010 × Type: Thesis × Thesis Type: M.V.Sc. ×
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    ThesisItemOpen Access
    EFFECT OF DIETARY SUPPLEMENTATION OF ZINC NANO-PARTICLES ON GROWTH PERFORMANCE OF CROSSBRED CALVES
    (College of Veterinary Science, Assam Agricultural University, Khanapara, Guwahati, 2022-01) BARMAN, AJAY; Borah, Lakhyajyoti
    An experiment was conducted to evaluate the effect of dietary supplementation of zinc nano-particles (nano-ZnO) on growth performance, nutrient utilization, serum biochemical parameters and cost per kg weight gain in crossbred calves. A total twenty four crossbred calves of average body weight 91.77±1.90 and about 6-8 months of age were randomly selected and divided into 3 groups (T0, T1 and T2) of 8 nos each. Experimental calves were provided with green roughage, paddy straw and standard concentrate ration supplemented with inorganic zinc @40 mg/kg DMI in T0, nano-zinc oxide @10 mg/kg DMI in T1 and nano-zinc oxide @20 mg/kg DMI in T2. The concentrate ration was prepared as per BIS, 2013 by using conventional feed ingredients viz. maize, wheat bran, rice polish, GNC, MOC, mineral mixture and salt. The feeding trial was carried out for 84 days. Blood collection was done at 0, 42nd and 84th day for blood biochemical parameter estimation. Humoral immune and cellular immune responses were observed during the end days of the trails. At the end of the feeding trial metabolic trials was conducted for 5 days with 5 animals from each group. The feed intake in crossbred calves was not affected due to the supplementation of nano-ZnO. However, the total body weight gain and average daily gain were significantly (P<0.01) higher in the nano-ZnO supplemented groups than the inorganic zinc supplemented group. Feed conversion ratio was significantly (P<0.01) better in the groups supplemented with nano-ZnO i.e. T1 and T2 compared to the T0. No significant difference was observed among the groups in respect of digestibility coefficient of the DM, OM, CP, EE, CF, NFE, ADF, NDF and retention percentages of nitrogen, calcium and phosphorus. The percent CP and TDN received (as per ICAR, 2013) were comparable among the groups. The haematological parameters viz. serum cholesterol, serum triglycerides, serum creatinine, serum gamma glutamyl transferes, serum albumin: globulin were not significantly affected by supplementation of nano-ZnO. But, superoxide dismutase was significantly (P<0.01) higher in the groups supplemented with nano-ZnO compared to the inorganic zinc supplemented group. Significantly better humoral immunity and cell mediated immunity response was observed in T1 and T2 groups than the T0 group. The relative feed cost per kg weight gain was low in the T2 than other groups. The present study revealed that the supplementation of nano-ZnO up to 20 mg/kg in calf ration is beneficial in terms of body weight gain, feed conversion ratio, immune response and economics of feeding.