Effects of replacing fishmeal with fermented and non-fermented rapeseed meal on the growth, immune and antioxidant responses of red sea bream (Pagrus major )

Abstract

The effect of rapeseed meal (RM) and Aspergillus oryzae fermented rapeseed meal (RM‐Koji) on red sea bream (Pagrus major) was examined. Three groups of fish (initial weight, 4.5 ± 0.02 g) were fed a basal diet (RM0) and two test diets where half of fishmeal was replaced by RM (RM50) and RM‐Koji (FRM50) for 56 days. The obtained results showed that fish fed RM0 and FRM50 exerted significantly higher growth performance, feed utilization and haemoglobin level but lower triglyceride and cholesterol than RM50 group (p < 0.05). Interestingly, except of antiprotease activity, all the immune parameters including lysozyme, respiratory burst (NBT) and bactericidal activities were significantly increased in fish fed RM0 and FRM50 diets compared to RM50 diet (p < 0.05). In addition, malondialdehyde and reactive oxygen metabolites were significantly reduced in RM0 and FRM50 groups over RM50 group (p < 0.05). The present results suggest that fermented RM induced better growth performance and immune responses than feeding red sea bream with non‐fermented RM and both RM and RM‐Koji improved the antioxidative status of fish, making RM‐Koji an interesting candidate as a functional feed for aquatic animals.

Evaluation of Yeast Fermented Poultry By-Product Meal in Nile Tilapia (Oreochromis niloticus) Feed: Effects on Growth Performance, Digestive Enzymes Activity, Innate Immunity, and Antioxidant Capacity

“…Potential problems in PBM feeding exist due to the existence of fibers and high levels of lipids, which can cause high oxidation, malnutrition, and lower palatability (12,13). To reduce the costs of the feed and environmental pollution, PBM can be treated with suitable microorganisms with beneficial effects (14,15). Recently, the fermentation strategy has been applied to balance the nutritional value of animal protein sources (16).…”

Evaluation of fermented date palm seed meal withAspergillus oryzaeon the growth, digestion capacity and immune response of Nile tilapia (Oreochromis niloticus)

“…However, the sources of plant protein are normally low in protein, with high antinutritional factors (ANFs) and unbalanced amino acid profiles that reduce their palatability and limit their application in aquafeed (Dawood & Koshio, ; Gatlin et al, ). Fermentation is based on using of microorganisms that can exhibit its beneficial role if reared under specific conditions (Dossou et al, ; Kaviraj, Mondal, Mukhopadhyay, & Turchini, ). The fermentation process was recognized for its role in improving the nutritional quality of different protein sources (Azarm & Lee, ; Jannathulla, Dayal, Vasanthakumar, Ambasankar, & Muralidhar, ).…”

Effects of partial replacement of fishmeal with blood meal and dried porcine soluble on the growth, body composition and intestinal morphology of Cyprinus carpio

“…Thus, less expensive alternative protein sources are required (Lim et al, ). Many studies use plant protein instead of fish meal, such as soybean meal (Zhang et al, ), rapeseed meal (Dossou et al, ), corn gluten meal (Potki, Falahatkar, & Alizadeh, ) and so on. Although the price of plant protein is relatively low, there are some problems such as uneven distribution of amino acids, contain anti‐nutritional factors, poor palatability and low digestibility.…”