期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：8
页码：3716
出版社：S&S Publications
摘要：Fish is a rich source of polyunsaturated fatty acids (PUFA’s) viz. n-6 and n-3 PUFA’s, which are beneficial tohuman health. Rohu considered to be the most important of the “Indian Major Carps” and is the world’s 10th highestcultured finfish by production volume. Essential fatty acids such as omega-3 fatty acids (EPA and DHA) play a vital role infish nutrition. To understand the role of the dietary Omega-3 fatty acids diets in fingerlings of Labeo rohita, a 60 daysexperiment was carried out. 300±20 fingerlings of rohu were randomly distributed in five treatment groups consisting ofthree replicates of each. Five isonitrogenous (protein 19.60g) and isocaloric (337 k cal/ 100 g) experimental diets viz.Control (basal diet), T1 (basal + 1% ω-3 fatty acid), T2 (basal + 3% ω-3 fatty acid), T3 (basal + 5% ω-3 fatty acid) and T4(basal + 7% ω-3 fatty acid) were prepared with graded levels of omega-3 fatty acids. These were fed to rohu fingerlings(average body weight 1.793 ± 0.022g) twice a day. Sampling of water from all the experimental groups were carried out toestimate water quality parameters viz temperature, PH, dissolved oxygen, free carbon dioxide, total hardness, ammonia,nitrite and alkalinity. These were recorded for every 15 days interval. The water in each tank was changed (80%) daily andreplenished with fresh water, for each tank. The results indicated that the fishes which received the feed T1 (127.4±0.1)consisting of 1% of ω-3 fatty acid showed significantly increase of average body weight and specific growth rates (SGR)compared to control and other treatments T2 (120.1±0.3), T3 (112.6±0.3) and T4 (109.0±0.3). The experimental conditions,T1 feed (1% omega-3 fatty acid) had showed better growth amongst the treatments and increase of beyond 1% omega-3fatty acid had showed poor growth due to of nutrients in general, omega-3 fatty acid in particular. Supplementation ofomega-3 fatty acid in the aquaculture diets would also helps maintain the optimum range of physico-chemical parameters ofthe reared water.
关键词：Labeo rohita; Omega-3 fatty acid; Specific Growth rate and Physico-Chemial paramers
