Effects of replacing fish meal with soybean meal on growth, body composition and digestive enzyme activities of juvenile Chinese sucker,Myxocyprinus asiaticus

Abstract

Six isonitrogenous diets (420 g kg−1 crude protein on dry matter basis) with six levels of soybean meal (SBM) inclusion (0, 112, 225, 336, 449 and 560 g kg−1) in substitution of fish meal (0%, 20%, 40%, 60%, 80% and 100%) were evaluated in Chinese sucker of 1.81 ± 0.01 g initial weight for 8 weeks. There existed a significant difference (P < 0.001) in fish weight gain, feed conversion ratio, feed intake, protein efficiency ratio and specific growth rate when the replacement level for fish meal protein was increased from 40% to 60%, indicating that up to 40% of fish meal protein could be replaced with SBM protein without causing reduction in growth and protein utilization. Lipid contents in the Chinese sucker body decreased significantly (P < 0.001) as dietary SBM increased. Digestive enzyme activities in the intestine and hepatopancreas of the fish were significantly different (P < 0.001) as the SBM protein replacement level was increased. Results of the present study appear to indicate that 40% FM can be replaced by SBM in practical feeds of Chinese sucker.

Partial replacement of fish meal by soybean meal with or without methionine and phytase supplement in diets for juvenile Chinese sucker,Myxocyprinus asiaticus

“…The reduced growth performance in fish fed diet SBM, where 60% fish meal was replaced by soybean meal without methionine or phytase supplement, confirmed the observations of a preliminary study concerning the effect of fish meal replacement by soybean meal on growth performance in juvenile Chinese sucker (Yu et al . ). The suppression in inferior growth performance in fish fed diet SBM may be attributed to the presence of antinutritional factors in soybean meal (Storebakken et al .…”

“…In a previous study, we demonstrated that soybean meal could be used to provide a significant proportion of the dietary protein for Chinese sucker (Yu et al . ). However, one of the factors limiting its utilization at higher inclusion levels appeared to be a deficiency of methionine.…”

“…Yu et al . () found 40% fish meal can be replaced by SBM without any amino acid supplement in practical diets of juvenile Chinese sucker, but when the replacing level increased to 60%, the growth was affected which may be caused by deficiency of methionine and antinutritional factors such as phytic acid.…”

Development of formulated diets for snakehead (Channa striata and Channa micropeltes): Can phytase and taurine supplementation increase use of soybean meal to replace fish meal?

“…We have observed generally that C. striata is much more aggressive toward conspecifics in a tank than is C. micropeltes, so we suspect that much of the mortality was due to these aggressive encounters. Studies with other species have often shown limited ability to replace FM with SBM, e.g., 30-58% replacement of FM in Paralichthys olivaceus (Saitoh et al, 2003;Choi et al, 2005), 40% in Myxocyprinus asiaticus (Yu et al, 2013), but up to 83% in Morone chrysops × Morone saxatilis hybrids (Rombenso et al, 2013).…”

Growth responses on major replacement of animal protein with plant protein and graded levels of dietary supplement amino sugar, glucosamine in threatened Magur (Clarias batrachus, Linnaeus, 1758) fry

“…Yu and co-workers [94] indicated that replacement level up to 40% did not affect the growth, FCR, PER and body [45]. Soybean products as dietary protein source has been reported to affect the growth and feed utilization of many fish species including channel catfish [46,47], tilapia [24,48], rainbow trout [49,66,68,69], red drum [67,70], seabream [71], Asian catfish [27], cobia [72] and cuneate drum [73].…”