益 生 菌 对 羊 生 长 性 能 影 响 的 Meta 分 析.

The objective of this study was to investigate the impact of probiotics on the growth performance of sheep. A meta-analysis model was established to assess the effects of probiotics on sheep's growth performance. Computer searches were conducted in CNKI, Wan Fang Date, Science Direct, and Web of Science databases from January 2008 to January 2023 for experimental studies examining the effects of probiotics on sheep's growth performance. Meta-analysis was performed using StataSE 17 (64- bit) and Review Manager 5.4.1 to analyze each effect index. A total of 40 Chinese and English studies on probiotics were collected, involving a sample size of 1 004 subjects. The addition of probiotics to feed has a significant improvement effect on average daily weight gain (P<0.05); Adding probiotics to feed can significantly reduce the feed to weight ratio of sheep (P<0.05). Further meta-analysis revealed that Clostridium and Lactobacillus exhibited greater advantages over Bacillus and yeast in enhancing sheep's growth performance. [ABSTRACT FROM AUTHOR]