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Open AccessArticle

Effect of Yeast Culture (Saccharomyces cerevisiae) on Broilers: A Preliminary Study on the Effective Components of Yeast Culture

by Zhe Sun 1,2, Tao Wang 2,3, Natnael Demelash 3, Sen Zheng 3, Wei Zhao 2,3, Xue Chen 2,3, Yuguo Zhen 2,3,* and Guixin Qin 2,*
1
College of Life Science, Jilin Agricultural University, Changchun 130118, China
2
JLAU-Borui Dairy Science and Technology R & D Centre, Jilin Agricultural University, Changchun 130118, China
3
College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
*
Authors to whom correspondence should be addressed.
Animals 2020, 10(1), 68; https://doi.org/10.3390/ani10010068
Received: 8 November 2019 / Revised: 29 November 2019 / Accepted: 26 December 2019 / Published: 30 December 2019
(This article belongs to the Section Poultry)
The value of yeast culture (YC) as alternative feed additives in poultry farming has been proven. YC is a nutrient-rich and complex micro-ecological fermentation product containing various metabolites. However, the major or specific effective components of YC and their importance in poultry farming are unknown. Herein, we screened the “effective ingredients” of YCs obtained from different fermentation times based on metabolomics and animal feeding experiments. Glycine, fructose, inositol, galactose, and sucrose were identified as potential effective metabolites in YCs. These findings provide an important basis for objective, accurate, and quick evaluation of the quality of YC products, as well as a scientific understanding of their functions.
This study was aimed at determining the effective ingredients of yeast culture (YC) for animal breeding. First, the contents of YCs obtained from various fermentation times were detected using gas-chromatography. A total of 85 compounds were identified. Next, 336 Arbor Acres (AA) broilers were randomly divided into seven experimental groups and fed a basal diet, diets supplemented with YCs obtained at various fermentation times, or SZ1 (a commercial YC product). A significant increase in body weight gain (BWG) and a significant decrease in feed conversion ratio (FCR) of AA broiler chicks were observed with YC supplementation. Additionally, most of blood and immunological indices were improved with YC supplementation. According to the production performance and the results of multivariate analysis, glycine, fructose, inositol, galactose, and sucrose were found as the potential effective compounds of YC and were involved in metabolic pathways including glycine, serine, and threonine metabolism. Supplementation with diets based on combinations of effective compounds improved weight gain, feed efficiency, serum immunoglobulin A, and immunoglobulin G, but decreased blood urea concentration. These findings suggest YCs as effective and harmless feed additives with improved nutritional properties for broiler chicks. View Full-Text
Keywords: yeast culture; broiler; metabolomics; gas chromatography-mass spectrometry; multivariate analysis yeast culture; broiler; metabolomics; gas chromatography-mass spectrometry; multivariate analysis
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Sun, Z.; Wang, T.; Demelash, N.; Zheng, S.; Zhao, W.; Chen, X.; Zhen, Y.; Qin, G. Effect of Yeast Culture (Saccharomyces cerevisiae) on Broilers: A Preliminary Study on the Effective Components of Yeast Culture. Animals 2020, 10, 68.

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