Partial replacement of fishmeal with corn gluten meal, pea protein isolate and their mixture in diet of black sea bream ( Acanthopagrus schlegelii ) juveniles: Effects on growth performance, feed utilization and haematological parameters

Abstract

Corn gluten meal (CGM), pea protein isolate (PPI) and their mixture (CPP, 1:1 ratio) were evaluated as fishmeal (FM) alternatives in black sea bream (Acanthopagrus schlegelii) juveniles (9.02 ± 0.12 g). A FM diet was designed as control, and other six diets had 20% and 40% FM protein replaced by CGM, PPI and CPP, respectively, with the supplementation of crystalline methionine, arginine and lysine. After the 8‐week feeding trial, significantly lower weight gain was found in fish fed the 40% CGM diet (p < .05), whereas other treatments had no statistical difference (p > .05). The values of feed efficiency ratio and feed intake, as well as proximate compositions of muscle and whole body, were not significantly influenced in all treatments. Apparent digestibility coefficients (ADCs) of dry matter, crude protein, threonine, valine, methionine, isoleucine, leucine, phenylalanine and lysine were significantly influenced by protein source. Fish fed the 40% CGM diet had significantly higher content of essential amino acid in muscle than that of the 20% PPI diet. Fish fed the 40% CGM diet had significantly lower content of serum cholesterol than other treatments (p < .05). Elevated serum superoxide dismutase activity was found in fish fed the 40% plant protein diets. In conclusion, between 20% and 40% FM protein could be replaced by CGM, while about 40% FM protein derived from PPI and CPP could be applied in black sea bream.

Effects of supplemental amino acids and bile acid in a completely replaced fish meal by enzymatically hydrolysed soybean meal diet on growth performance, liver health and fillet quality of rainbow trout ( Oncorhynchus mykiss )

“…The present study showed that amino acids, including Met, Cys, Tyr and Pro contents, increased and in all ESM inclusive groups, especially in amino acid supplemented groups (E+A and E+AB). Phe content increased in the other four groups compared with the FM diet, which is consistent with black sea bream (A. schlegelii) following the replacement of fish meal with a mixture of phytogenic protein (Wang et al, 2020). These results indicated the positive role of supplemental amino acids in enhancing protein anabolism or inhibiting protein catabolism.…”

The Optimization of Dietary Protein Level and Carbon Sources on Biofloc Nutritive Values, Bacterial Abundance, and Growth Performances of Whiteleg Shrimp (Litopenaeus vannamei) Juveniles

“…16 to analyze the statistical difference one-way ANOVA, followed by the Duncan test [61]. In addition, two-way ANOVA was used to determine the effects of the protein level, carbon source, and their interaction [62]. Significance was set as p < 0.05.…”

Muscle Nutritive Metabolism Changes after Dietary Fishmeal Replaced by Cottonseed Meal in Golden Pompano (Trachinotus ovatus)

“…These results were consistent with our previous studies on turbot and shrimp demonstrating the great variation on free AA after a higher percentage of FM was replaced by alternative proteins [ 48 , 49 ]. We envisaged that the changes of free AA profile after 60% FM replaced by CSM might be partially due to the unbalanced AA composition of higher CSM containing diets [ 50 , 51 ]. A lower level of free AA in muscle not only decreased the bricks for protein synthesis and antioxidative capacity but also disordered the glycolipid metabolism [ 52 , 53 ].…”