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Iranian Journal of Fisheries Sciences، جلد ۱۹، شماره ۴، صفحات ۱۸۱۸-۱۸۲۷
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عنوان انگلیسی Effect of different carbohydrate-to-lipid ratios elicits growth, feed utilization, lipid deposition and lipogenic enzyme activity in striped catfish (Pangasianodon hypophthalmus, Sauvage, 1878) fingerlings
چکیده انگلیسی مقاله This study evaluated the effects of diets containing various carbohydrate-to-lipid (CHO L-1) ratios on growth performance, nutrient utilization body indices and hepatic lipogenic enzyme (malic enzyme, 6-phosphogluconate dehydrogenase and fatty acid synthase) activities. Triplicate groups of Pangasianodon hypophthalmus fingerlings were fed eight isoenergetic and isonitrogenous diets with different carbohydrate-to-lipid ratios (0.51, 0.79, 1.12, 1.79, 2.41, 3.24, 4.43 and 7.62). Higher body fat deposition and lower growth performance were observed in P. hypophthalmus fingerlings fed with high-lipid diet than those fed with high-carbohydrate diet. The fish fed the diet with 7.62 CHO L-1 ratio exhibited significantly (p< 0.05) higher hepatosomatic index compared to those fed higher lipid diets (0.51 and 0.79). High dietary carbohydrate level significantly increased (p<0.05) the activities of malic, 6-phosphogluconate dehydrogenase and fatty acid synthase enzyme. Based on the second-order polynomial regression analysis of weight gain, the optimal dietary carbohydrate and lipid contents for P. hypophthalmus fingerling were 304 and 103 g kg−1, respectively, which correspond to a dietary CHO L-1 ratio of 2.95.
کلیدواژه‌های انگلیسی مقاله Striped catfish, Carbohydrate-to-lipid ratio, Lipogenesis, Fat deposition
نویسندگان مقاله | M. Asemani
Iranian Fisheries Science Research Institute, Agricultural Research,Education and Extension Organization, Tehran, Iran


| A. Sepahdari
Iranian Fisheries Science Research Institute, Agricultural Research,Education and Extension Organization, Tehran, Iran


| M. Hafezieh
Iranian Fisheries Science Research Institute, Agricultural Research,Education and Extension Organization, Tehran, Iran


| Sh. Dadgar
Iranian Fisheries Science Research Institute, Agricultural Research,Education and Extension Organization, Tehran, Iran
نشانی اینترنتی http://jifro.ir/browse.php?a_code=A-10-2472-1&slc_lang=en&sid=1
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده aquaculture
نوع مقاله منتشر شده پژوهشی
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