Zou Qiangqiang, Meng Weishuang, Wang Tieliang, Liu Xiao, Li Desheng
College of Animal Husbandry and Veterinary Medicine, Jinzhou Medical University, Jinzhou, China.
College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.
Front Vet Sci. 2022 Dec 15;9:1098807. doi: 10.3389/fvets.2022.1098807. eCollection 2022.
The aim of the experiment was to investigate the effects of a probiotic complex (PC) consisting of and on productive performance, carcass traits, immune organ indices, fecal microbiota counts and noxious gas emissions in AA+ male broilers. Three hundred and sixty 1-day-old AA+ male broilers with similar body weight (44.77 ± 0.25) were randomly divided into 3 treatment groups of 6 replicates each, with 20 broilers in each replicate. The experimental groups consisted of a group fed a basal diet and groups fed basal diet supplemented with 0.1 and 0.2% PC. The results showed that the addition of PC had no significant effect ( > 0.05) on growth performance, and carcass traits of AA+ broilers during the experimental period (1-42 days of age). Dietary addition of PC significantly increased the thymus index of AA+ broilers ( < 0.05), reduced the number of and in feces ( < 0.01) and reduced the concentrations of fecal NH and HS emissions ( < 0.01). Furthermore, birds fed 0.2% PC diet had the highest number of fecal counts. Results indicate that probiotic complex consisting of and enhances immune organ development, reduces the number of and in feces, increases the number of and reduces NH and HS emissions in feces. This trial provides a theoretical basis for the use of probiotic complexes in broiler production.
本实验旨在研究由[具体成分1]和[具体成分2]组成的益生菌复合物（PC）对AA +雄性肉鸡生产性能、胴体性状、免疫器官指数、粪便微生物数量及有害气体排放的影响。360只1日龄体重相近（44.77±0.25）的AA +雄性肉鸡随机分为3个处理组，每组6个重复，每个重复20只肉鸡。实验组包括一组饲喂基础日粮的肉鸡以及两组分别在基础日粮中添加0.1%和0.2% PC的肉鸡。结果表明，在试验期（1至42日龄）内，添加PC对AA +肉鸡的生长性能和胴体性状无显著影响（P＞0.05）。日粮中添加PC显著提高了AA +肉鸡的胸腺指数（P＜0.05），减少了粪便中[有害菌1]和[有害菌2]的数量（P＜0.01），并降低了粪便中NH₃和H₂S的排放浓度（P＜0.01）。此外，饲喂0.2% PC日粮的肉鸡粪便中[有益菌]数量最多。结果表明，由[具体成分1]和[具体成分2]组成的益生菌复合物可促进免疫器官发育，减少粪便中[有害菌1]和[有害菌2]的数量，增加[有益菌]数量，并减少粪便中NH₃和H₂S的排放。本试验为益生菌复合物在肉鸡生产中的应用提供了理论依据。
