Effects of garlic polysaccharides on growth performance,immune function,and antioxidant capacity in Dagu chickens
YANG Wenxi
WANG Qingyue
YANG Shengxin
LI Wanjun
Abstract：This experiment aimed to investigate the effects of dietary supplementation with garlic polysaccharides on the growth performance,immune function,and antioxidant capacity of Dagu chickens.A total of 240 healthy one-day-old male Dagu chickens were selected and randomly divided into four groups,with three replicates per group and 20 chickens per replicate.The control group(group A)was fed a basal diet,while groups B,C,and D were supplemented with 1.0,1.5,and 2.0 g/kg garlic polysaccharides in the basal diet,respectively.The test period lasted for 63 days.The results showed that from days 1 to 42,the 42-day-old body weight of all supplementation groups was significantly higher than that of group A(P＜0.05),and the average daily weight gain of group C was significantly higher than that of group A(P＜0.05).From days 43 to 63,the 63-day-old body weight,average daily weight gain,and average daily feed intake of group C were significantly higher than those of group A(P＜0.05).From days 1 to 63,the feed-to-gain ratio of groups C and D was significantly lower than that of group A(P＜0.05).The spleen index,thymus index,and bursa of Fabricius index of all supplementation groups were significantly higher than those of group A(P＜0.05).The serum immunoglobulin G(IgG),interleukin-1(IL-1)and interleukin-2(IL-2)concentrations of group C were significantly higher than those of group A(P＜0.05).The interferon-γ(IFN-γ)and tumor necrosis factor-α(TNF-α)concentrations of all supplementation groups were significantly higher than those of group A(P＜0.05).The total antioxidant capacity(T-AOC)and the activities of catalase(CAT),superoxide dismutase(SOD),and glutathione peroxidase(GSH-Px)in all supplementation groups were significantly higher than those of group A(P＜0.05),while the malondialdehyde(MDA)content was significantly lower than that of group A(P＜0.05).The study indicates that dietary supplementation with an appropriate amount of garlic polysaccharides can effectively improve the growth performance,enhance immune function,and antioxidant capacity of Dagu chickens,and the suitable addition ratio is 1.5 g/kg.
Keywords：garlic polysaccharidesDagu chickensgrowth performanceimmune functionantioxidant capacity
Publication Date：2025-11-16
Online Publishing Date：2026-01-12(First online date of this platform, not the publication date of the document)
Pages：5( 64-68 )