[Objective] With the gradual prohibition of the use of antibiotic growth promoters(AGPs) in animal feed, studies on AGPs alternatives are becoming hot topics. As the bile salt hydrolase plays a key role in lipid metabolism, it has become an important direction in AGPs alternatives. This study is aimed to determine the difference in enzymatic properties of bile salt hydrolase from chicken and porcine Lactobacillus based on the prokaryotic expression and purification. [Methods] The encoding genes of chicken b...