Replacing fishmeal with cottonseed protein concentrate in feed for pearl gentian groupers (Epinephelus fuscoguttatus♀ × E. lanceolatus♂): Effects on growth and expressions of key genes involved in appetite and hepatic glucose and lipid metabolism
2021
Abstract This study investigated the effects of replacing the fish meal (FM) in a 55 % FM fish feed with cottonseed protein concentrate (CPC) in pearl gentian groupers (Epinephelus fuscoguttatus♀ × E. lanceolatus♂). Effects on growth and the expression of key genes involved in appetite and hepatic glucose and lipid metabolism Four isoproteic and isolipidic diets were formulated containing 0 %, 6.06 %, 18.18 %, or 30.30 % CPC by replacing 0 % (FM, control), 10 % (CPC10), 30 % (CPC30), and 50 % (CPC50) of the FM in the feed, respectively. Each diet was fed to fish raised in triplicate groups for 56 days. No significant differences in specific growth rate, feed conversion ratio, or survival rate were found among dietary treatments. The weight gain in CPC groups was no different than in controls (P
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