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Dietary isoleucine requirement of fingerling Indian major carp, Labeo rohita (Hamilton)

2007; Wiley; Volume: 13; Issue: 6 Linguagem: Inglês

10.1111/j.1365-2095.2007.00493.x

1365-2095

Mukhtar A. Khan, Shabihul Fatma Abidi,

Animal Nutrition and Physiology

Aquaculture NutritionVolume 13, Issue 6 p. 424-430 Dietary isoleucine requirement of fingerling Indian major carp, Labeo rohita (Hamilton) M.A. KHAN, M.A. KHAN Fish Nutrition Research Laboratory, Department of Zoology, Aligarh Muslim University, Aligarh, IndiaSearch for more papers by this authorS.F. ABIDI, S.F. ABIDI Fish Nutrition Research Laboratory, Department of Zoology, Aligarh Muslim University, Aligarh, IndiaSearch for more papers by this author M.A. KHAN, M.A. KHAN Fish Nutrition Research Laboratory, Department of Zoology, Aligarh Muslim University, Aligarh, IndiaSearch for more papers by this authorS.F. ABIDI, S.F. ABIDI Fish Nutrition Research Laboratory, Department of Zoology, Aligarh Muslim University, Aligarh, IndiaSearch for more papers by this author First published: 18 October 2007 https://doi.org/10.1111/j.1365-2095.2007.00493.xCitations: 31 Mukhtar A. Khan, Fish Nutrition Research Laboratory, Department of Zoology, Aligarh Muslim University, Aligarh 202 002, India. E-mail: [email protected] Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract An 8-week feeding experiment was conducted to quantify the dietary isoleucine requirement of fingerling Indian major carp, Labeo rohita (3.50 ± 0.04 cm; 0.40 ± 0.02 g) using amino acid test diets (400 g kg−1 crude protein; 17.90 kJ g−1 gross energy) containing casein, gelatin and l-crystalline amino acids. Six dietary treatments supplemented with graded levels of isoleucine (7.5, 10.0, 12.5, 15.0, 17.5 and 20.0 g kg−1), in gradations of 2.5 g kg−1 diet, were fed to triplicate groups of fingerlings to apparent satiation divided over two feedings at 07:00 and 17:30 h. Performance of the fish was evaluated on the basis of live weight gain, feed conversion ratio (FCR), protein efficiency ratio (PER), specific growth rate (SGR) and protein productive value (PPV). Statistical analysis of live weight gain, FCR, PER, SGR and PPV reflected significant differences among treatments. Live weight gain and conversion efficiencies were best with isoleucine at 15.0 g kg−1 of diet. Live weight gain, FCR, PER, SGR and PPV data were also analysed using second-degree polynomial regression analysis to obtain more accurate isoleucine requirement estimate which was found to be at 15.9, 15.3, 15.2, 15.8 and 15.7 g kg−1 of dry diet, corresponding to 39.8, 38.3, 38.0, 39.5 and 39.3 g kg−1 of dietary protein respectively. Based on the quadratic regression analysis of the live weight gain, FCR, PER, SGR and PPV, the optimum level of isoleucine for fingerling L. rohita is in the range of 15.2–15.9 g kg−1 of dry diet, corresponding to 38.0–39.8 g kg−1 of dietary protein. Maximum body protein, minimum moisture and fat were noted at 15.0 g kg−1 of dietary isoleucine while the body ash remained constant among all the treatment levels. No mortality was recorded during the duration of the experiment. Citing Literature Volume13, Issue6December 2007Pages 424-430 RelatedInformation