Assessing the feasibility of dietary soybean meal replacement for fishmeal to the swimming crab, Portunus pelagicus, juveniles

Abstract

The feasibility of dietary soybean meal (SBM) replacement for fishmeal was evaluated to the swimming crab Portunus pelagicus juveniles over six consecutive molts by measuring their growth, development, hemolymph cholesterol, triglycerides, phosphate, whole-body crude protein and cholesterol as well as hepatopancreatic trypsin activity, histopathology and glycogen reserves. A total of six isonitrogenous, isolipidic and isoenergetic diets were formulated with SBM replacing fishmeal at 0 (control), 20, 40, 60, 80 or 100% of total dietary protein. Each treatment consisted of 30 replicate crabs starting from the first juvenile stage and after the crabs molted to the seventh stage, three-day post molt crabs were sampled. Results showed that crabs fed the 20% SBM diet had the best growth, which was significantly higher than the control diet (0% SBM). Growth became significantly lower in the 60% dietary SBM treatment and above, while hemolymph cholesterol, triglycerides and phosphate significantly decreased with increasing dietary SBM. The whole-body moisture, crude protein and cholesterol were unaffected by dietary SBM. Meanwhile, hepatopancreatic trypsin activity significantly decreased in the 20 to 60% SBM treatments, with a further significant decrease in the 80 and 100% SBM treatments. Hepatopancreatic damage, significantly fewer epithelial cells and glycogen reserves occurred at 60% SBM and above. Results indicate that dietary SBM can replace up to 40% of fishmeal in the diets of P. pelagicus juveniles without reducing their growth or hepatopancreatic condition.

Effect of dietary soybean meal associated with feeding time on the growth performance and intestinal microbiota composition of northern snakehead

“…Hence, when discussing how diet affects the nutrition utilization and intestinal histology of fish, the composition of the intestinal microbiota must be considered. Due to the relatively high protein level and amino acid profile, soybean meal has attracted greater interest for fish feed formulations (Fuertes et al, ; Hardy, Dabrowski, & Hardy, ; Taher et al, ; Yaghoubi et al, ). Considering the influence of the intestinal microbiota on immunity, intestinal development and function, several studies have assessed the changes in the intestinal microbiota induced by soybean meal (Gajardo et al, ; Ringø et al, ; Zhou, Ringø, Olsen, & Song, ).…”

Effects of fructooligosaccharide on growth, immunity and intestinal microbiota of shrimp (Litopenaeus vannamei ) fed diets with fish meal partially replaced by soybean meal

“…The results were in agreement with previous studies that growth performance decreased and FCR increased significantly with the increase of dietary SBM levels in white shrimp ( L. vannamei ) (Yun et al, ) and speckled shrimp ( Metapenaeus monoceros ) (Rahman et al, ). These may suggest that shrimps are sensibility to the anti‐nutritional factors (ANFs) in high SBM diet, such as trypsin inhibitor, tannins, phytic acid, saponins and lectins (Li et al, ; Taher et al, ). On the other hand, in this study dietary supplementation with FOS exerted beneficial effects on the growth performance and feed utilization in shrimp fed high SBM diet, which is consistent with those previous results with aquatic animals fed high FM diet (Ai et al, ; Liu et al, ; Zhang et al, ).…”

Nutritional evaluation of an improved soybean meal as a fishmeal replacer in the diet of Pacific white shrimp,Litopenaeus vannamei

“…Among potential alternative ingredients, conventional soybean meal (CSBM) is one of the most promising protein sources due to its availability, reasonable price, high digestibility and amino acid profile (Bulbul, Koshio, Ishikawa, Yokoyama, & Kader, ; Floreto, Bayer, & Brown, ; Lemos, Ezquerra, & Garcia‐Carreno, ; Taher et al., ). However, CSBM has lower levels of essential amino acids (EAA) than FM and is deficient in methionine, lysine and threonine (Gatlin et al., ; NRC, ).…”

“…Given the growing demand for feeds for aquaculture production of fish and shellfish and concerns about the sustainability of capture fisheries, there is a strong need to maximize the use of alternative ingredients and minimize or eliminate the use of FM. DOI: 10.1111/are.13593 Among potential alternative ingredients, conventional soybean meal (CSBM) is one of the most promising protein sources due to its availability, reasonable price, high digestibility and amino acid profile (Bulbul, Koshio, Ishikawa, Yokoyama, & Kader, 2015;Floreto, Bayer, & Brown, 2000;Lemos, Ezquerra, & Garcia-Carreno, 2000;Taher et al, 2017). However, CSBM has lower levels of essential amino acids (EAA) than FM and is deficient in methionine, lysine and threonine (Gatlin et al, 2007;NRC, 2011).…”