| Popis: |
Metformin, or 1,1-dimethylbiguanide, is a hypoglycemic drug that lowers blood glucose by reducing glycogen synthesis and increasing glucose uptake in peripheral tissues. Six diets with iso-nitrogenous and iso-lipid compositions were prepared, including a positive control (20 % carbohydrate, PC) and a negative control (30 % carbohydrate, T0). The experimental diets contained 0.2 % (T2), 0.4 % (T4), 0.6 % (T6), and 0.8 % (T8) metformin based on the negative control diet. A total of 540 hybrid groupers, with consistent size and health conditions, were randomly assigned to six groups. Each group contained 30 fish, with three replicates per group, and they were fed for eight weeks. The high-carbohydrate diet reduced weight gain, digestive enzyme activities and specific growth rates (P>0.05), while significantly increasing hepatosomatic indices (P |
