A meta-analysis on the effects of probiotics on the performance of pre-weaning dairy calves.

ABSTRACT:

Background

Probiotics have been used in livestock production for many years, but information on their benefits during the early life of calves is inconsistent. This study aimed to assess the effects of probiotics on the performance of pre-weaning dairy calves and identify the factors influencing their effect sizes.

Results

Forty-nine studies were selected for meta-analysis based on the inclusion and exclusion criteria. The study qualities were evaluated using a predefined risk assessment tool following GRADE guidelines. Meta-analysis results showed that probiotics increased the growth performance (body weight by 1.988 kg and average daily gain by 40.689 g/d), decreased digestibility and feed efficiency (feed conversion rate by 0.073), altered rumen parameter (decreased aceta

SUBMITTER: Wang L 

PROVIDER: S-EPMC9811714 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature