@article { author = {Asemani, Mehdi}, title = {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}, journal = {Iranian Journal of Fisheries Sciences}, volume = {19}, number = {4}, pages = {1818-1827}, year = {2020}, publisher = {Agricultural Research,Education and Extension Organization}, issn = {1562-2916}, eissn = {2322-5696}, doi = {10.22092/ijfs.2018.117924}, abstract = {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. Triplicategroups of Pangasianodonhypophthalmus 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 fingerlingwere 304 and 103 g kg−1, respectively, which correspond to a dietary CHO L-1 ratio of 2.95.}, keywords = {Pangasianodon hypophthalmus,carbohydrate-to-lipid ratio,lipogenesis,fat deposition}, url = {https://jifro.areeo.ac.ir/article_117924.html}, eprint = {https://jifro.areeo.ac.ir/article_117924_f0c50cbbc7265464d468200b53c5e881.pdf} }