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Effects of Lactobacillus acidophilus on production performance and immunity of broiler chickens and their mechanism

文献类型： 外文期刊

作者： Jinmei Liu;Hongxia Gu;Rui Jia;Shuzhen Li;Zhimin Chen;Aijuan Zheng;Wenhuan Chang;Guohua Liu

作者机构：

关键词： broiler chicken;carcass characteristics;growth performance;immunity;Lactobacillus acidophilus

期刊名称： Frontiers in Veterinary Science

ISSN： 2297-1769

年卷期： 2025 年 12 卷

页码：

收录情况： SCIE（2025版）

摘要： Introduction: Lactobacillus species have attracted more and more attention as a potential antibiotic substitute for human health and animal production due to their remarkable antibacterial effects. However, the underlying mechanism is unclear. This experiment’s goal was to investigate the impacts of lactic acid bacteria (LAB) on the growth performance, carcass characteristics, immune function of broiler chickens and their mechanism. Methods: One hundred and eighty 1-day-old AA broilers were used and randomly allocated into 3 treatment groups with 6 replicates of 10 chickens per replicate. The 3 treatment groups were control group (CK), L. acidophilus added group (LAB-E, 1.0 × 108 CFU/kg) for the first 7 days; L. acidophilus added group (LAB-A, 1.0 × 108 CFU/kg) for the whole experimental period. Broilers had free access to water and feed. Results: The results showed that addition of L. acidophilus for the whole experimental period significantly decreased ADFI, FCR and the abdominal fat percentage of broilers (p < 0.05), tended to increase the levels of IgG in broiler serum (p = 0.093). The LAB-A group had higher HDL-C content and IL-2, IL-4 content, and lower level of LPS in broiler serum compared to the controls (p < 0.05). Discussion: In conclusion, L. acidophilus improved feed efficiency and immune function of broilers by controlling nutrient metabolism and inflammation responses of broilers. L. acidophilus can be used as a potential substitute for antibiotics in broiler production.

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