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Optimization of protein in supplementary feeds for pond raised cyprinids | ||
| Iranian Journal of Veterinary Research | ||
| مقاله 8، دوره 19، شماره 1 - شماره پیاپی 62، 2018، صفحه 41-43 اصل مقاله (143.66 K) | ||
| نوع مقاله: Short paper | ||
| شناسه دیجیتال (DOI): 10.22099/ijvr.2018.4766 | ||
| نویسندگان | ||
| J. Zeb* 1؛ M. Javed2 | ||
| 1Department of Zoology, Faculty of Sciences, University of Punjab, Lahore-54590, Pakistan | ||
| 2Department of Zoology, Wildlife and Fisheries, Faculty of Sciences, University of Agriculture, Faisalabad, Pakistan | ||
| چکیده | ||
| Labeo rohita, Gibelion catla, Cirrhinus mrigala, Ctenopharyngodon idella and Hypophthalmichthys molitrix were grown together for 365 days in triplicate ponds. Six iso-caloric feeds having varying protein levels i.e. 22, 24, 26, 28, 30 and 32% were prepared and supplemented to fish at 2% fish weight daily. Significantly, higher final average weight (793 ± 197 g) and total length gain (398 ± 40 mm) was recorded for Ctenopharyndodon idella. Net fish yield enhanced as the level of digestible protein (DP) in the supplementary diets increased and plateaued at 28% DP level, thereafter significant reduction (P<0.05) in fish weight increments was experienced at any surplus protein level. Among the supplementary feeds, 28% DP level resulted in maximum net fish yield (4304 ± 33 kg ha-1 year-1) and a significantly higher overall nitrogen conversion ratio (NCR) of 1:5.2 ± 0.14. Higher level of DP in supplementary feeds resulted in reduced fish growth. | ||
| کلیدواژهها | ||
| Chinese carps؛ Composite culture؛ Condition factor؛ Indian major carps؛ Supplemental feed | ||
| مراجع | ||
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