Impact of yeast and lactic acid bacteria on mastitis and milk microbiota composition of dairy cows.

ABSTRACT: This experiment was conducted to evaluate the impact of yeast and lactic acid bacteria (LAB) on mastitis and milk microbiota composition of dairy cows. Thirty lactating Holstein cows with similar parity, days in milk were randomly assigned to five treatments, including: (1) Health cows with milk SCC??500,000 cells/mL, fed basal TMR without supplementation (M); (3) Mastitis cows fed basal TMR supplemented with 8 g day-1 yeast (M?+?Y); (4) Mastitis cows fed basal TMR supplemented with 8 g day-1 LAB (M?+?L); (5) Mastitis cows (milk SCC?>?500,000 cells/mL) fed basal TMR supplemented with 4 g day-1 yeast and 4 g day-1 LAB (M?+?Y?+?L). Blood and milk sample were collected at day 0, day 20 and day 40. The results showed efficacy of probiotic: On day 20 and day 40, milk SCC in H, M?+?Y, M?+?L, M?+?Y?+?L was significantly lower than that of M (P?

SUBMITTER: Gao J 

PROVIDER: S-EPMC6987887 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature