Effects of bioactive peptides derived from cottonseed meal solid ‐state fermentation on the growth, metabolism, and immunity of yellow‐feathered broilers

This study investigated the effects of bioactive peptides derived from solid-state fermentation of cottonseed meal on the growth performance, apparent dietary digestibility, serum biochemical parameters, protein metabolism, antioxidant activity, and immunity in yellow-feathered broilers. A total of two hundred forty 21-days-old male broilers were randomly divided into four groups with six replicates per group. The control group received a basal diet and three experimental groups were fed diets with 1%, 2%, and 3% cottonseed meal bioactive peptides (CSBP) replacing equivalent protein of cottonseed meal in basic diet. Dietary supplementation of 2% and 3% CSBP increased the average daily weight gain, crude protein digestibility, total serum protein, and immunoglobulin (Ig) G contents in serum (P <  0.05). The 3% CSBP increased albumin, total antioxidant capacity, spleen weight/bodyweight, interleukin-6, and IgM, while reducing the feed to gain ratio, total cholesterol, urea nitrogen, total superoxide dismutase, glutathione peroxidase, and malondialdehyde contents in serum (P <  0.05). The 2% CSBP diet increasedPepT1 expression in duodenum, jejunum, and ileum (P <  0.05). The 1%, 2%, and 3% CSBP diets increasedS6kinase-polypeptide-1 andinositol-3-hydroxylase expression in chest and leg muscles (P <  0.05). The CSBP addition in diets can improve growth performance, nutrient digestibility, protein metabolism, antioxidant, and immune capabilities of yello...
Source: Animal Science Journal - Category: Zoology Authors: Tags: RESEARCH ARTICLE Source Type: research