enzyme preparations
The enzyme preparation can improve the digestibility of the feed, reduce the residual amount of nutrients in the digestive tract, shorten the residual time, and indirectly reduce the growth chance of the pathogenic bacteria, thereby achieving the effect of disease resistance and disease prevention.

Degrading enzymes: 
phytase
It can directly inhibit the reproduction of Escherichia coli, Salmonella, Staphylococcus etc.During the reaction, the intestinal oxygen is consumed, which is beneficial to the growth of beneficial anaerobic bacteria such as Bifidobacterium and Lactobacillus.