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Effects of Dietary Corn Gluten Meal on Growth, Immunity, Enzyme Activity, and Protein Metabolism in Relation to TOR Gene Expression in Juvenile Large Yellow Croaker Larimichthys crocea
|Title:||Effects of Dietary Corn Gluten Meal on Growth, Immunity, Enzyme Activity, and Protein Metabolism in Relation to TOR Gene Expression in Juvenile Large Yellow Croaker Larimichthys crocea|
corn gluten meal
show 1 moreTOR gene expression
|Publisher:||The Israeli Journal of Aquaculture - Bamidgeh|
|Abstract:||A series of six isonitrogenous (45% crude protein) and isolipidic (10% crude lipid) diets were formulated by replacing 0% (control), 15%, 30%, 45%, 60% and 75% of fish meal (FM) with corn gluten meal (CGM), including 40% FM. In addition, all diets were supplemented with crystalline amino including lysine and methionine in all diets except the control. Results showed that there were no significant effects on survival, weight gain ratio (WGR), specific growth rate (SGR), and feed conversion ratio (FCR) among all dietary diet groups (P>0.05). There were also no significant differences (P > 0.05) among all diets in the serum immune enzyme, Alkaline Phosphatase (AKP), Lysozyme (LYZ) and Complement 3 (C3), but in Complement 4 (C4), there was a significantly higher content in C75 compared with the other diets (P < 0.05). There were no significant differences in alpha-amylase activities of digestive enzymes in hindgut among the dietary treatments (P > 0.05), while the activities of lipase were significantly lower in C0 than in the other groups (P < 0.05). There were no significant differences in trypsin activity in fish fed the C15, and C75 diets than the control group (P > 0.05). There were no significant differences (P > 0.05) among all the diets in aspartate amino transferase (AST), but in alanine aminotransferase (ALT) the activities of C75 diet were significantly lower compared with the other diets (P < 0.05). mRNA expression levels of target of rapamycin (TOR) in dietary groups were significantly lower than the control group (P < 0.05), however, there were no significant differences in C15 to C75 groups (P > 0.05). Results of the present study suggested that CGM could substitute up to 75% of FM without influencing the growth of juvenile Larimichthys Crocea.|
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Volume 71, 2019|
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