复合益生菌对肉鸡生长性能、屠宰性能和肉品质的影响OA

To investigate the effects of compound probiotics on growth performance,slaughter performance and meat quality of broilers,a completely randomized design was employed in this trial.A total of 240 healthy 1-day-old Ross 308 broiler chicks were randomly allocated to 2 groups,with 3 replicates per group and 40 birds per repli-cate.The control group was fed a basal diet,while the experimental group was fed the basal diet supplemented with 1.0 g/kg compound probiotics.The experimental period lasted 42 days.The results showed that compared with the control group,broilers in the experimental group exhibited a 12.5%significant increase in average daily gain(P<0.05),an 8.4%significant reduction in feed to gain ratio(P<0.05),and a 1.1%significant decrease in mortality(P<0.05).Av-erage carcass weight,dressing percentage and meat yield were significantly elevated by 9.8%,3.3%and 3.2%,respec-tively(P<0.05),whereas no significant differences were observed in culling rate and the relative weight of visceral or-gans.The meat color luster score and tenderness score were significantly increased(P<0.05);the 24-h dehydration rate was significantly decreased(P<0.05);and intramuscular fat content was significantly reduced(P<0.05).The fatty acid profile was significantly optimized:saturated fatty acid content decreased by 14.9%,while monounsaturated fatty acid and polyunsaturated fatty acid contents increased by 11.1%and 4.2%,respectively(P<0.05).In summary,dietary sup-plementation with 1.0 g/kg compound probiotics can significantly improve growth performance,enhance slaughter per-formance and optimize meat quality in broilers.