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ORIGINAL RESEARCH article

Front. Vet. Sci.
Sec. Animal Nutrition and Metabolism
Volume 11 - 2024 | doi: 10.3389/fvets.2024.1447238
This article is part of the Research Topic Crosslinking of feed nutrients, microbiome and production in ruminants View all 3 articles

Effects of yeast culture supplementation on milk yield, rumen fermentation, metabolism, and bacterial composition in dairy goats

Provisionally accepted
Zunyan Li Zunyan Li Yufeng Hu Yufeng Hu Haibin Li Haibin Li Yingting Lin Yingting Lin Ming Cheng Ming Cheng Fenghua Zhu Fenghua Zhu Yixuan Guo Yixuan Guo *
  • College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

The final, formatted version of the article will be published soon.

    The effects of yeast culture (YC) on dairy goat milk yield and potential effects of rumen microbial population changes on rumen fermentation are poorly understood. This study aimed to evaluate the effects of YC on milk yield and rumen fermentation in dairy goats and explore the potential microbial mechanisms. Forty Laoshan dairy goats with a weight of 51.23±2.23 kg and daily milk yield of 1.41±0.26 kg were randomly divided into 4 groups: control (no YC), YC1 (10 g/day per goat), YC2 (25 g/day per goat), and YC3 (40 g/day per goat). The pre-feeding period was 15 days, and the official period was 60 days. Laoshan dairy goats were milked twice daily, and the individual milk yield was recorded. On the last day of the official period, rumen fluid was collected to measure rumen fermentation, perform quantitative polymerase chain reaction (PCR), and detect metabolites. Compared to the control group, the YC group had greater milk yield; higher acetic acid, butyric acid, and total volatile fatty acid contents; and lower ammonia-N (NH3-N) content in the rumen (P < 0.05).YC increased the abundance of Clostridia_UCG-014 and Paraprevotella (P < 0.05).Differential metabolites L-leucine and aspartic acid were screened. This study revealed the microbial mechanisms linking the relative abundance of Paraprevotella and Clostridia_UCG-014 to L-leucine and aspartic acid utilization. These results describe the potential benefits of supplementing 10 g/day per goat YC in the diets of Laoshan dairy goats for improving the rumen environment and milk yield.

    Keywords: Dairy goats, Production performance, Rumen fermentation parameters, Rumen microflora, Rumen metabolism

    Received: 11 Jun 2024; Accepted: 31 Jul 2024.

    Copyright: © 2024 Li, Hu, Li, Lin, Cheng, Zhu and Guo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Yixuan Guo, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.