Effects of Saccharomyces cerevisiae on Nutrient Digestibility, Rumen Fermentation and Plasma Biochemical Parameters of Xiangzhong Black Beef

CHEN Liang, JIE Hongdong, REN Ao, ZHOU Chuanshe, TAN Zhiliang, LI Bin

doi:10.3969/j.issn.1006-267x.2017.09.041

2017 , Vol. 29 >Issue 9: 3359 - 3365

DOI: https://doi.org/10.3969/j.issn.1006-267x.2017.09.041

Molecular Nutrition

Effects of Saccharomyces cerevisiae on Nutrient Digestibility, Rumen Fermentation and Plasma Biochemical Parameters of Xiangzhong Black Beef

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1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. Key Laboratory for Agri-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Research Center of Livestock & Poultry Sciences, South Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, Institute of Subtropical Agriculture, The Chinese Academy of Sciences, Changsha 410125, China;
3. Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China;
4. Institute of Animal Science of Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850000, China

Received date: 2017-03-09

Online published: 2017-09-08

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Abstract

The objective of this trial was to explore the effects of different supplementation levels of Saccharomyces cerevisiae on growth performance, nutrient digestibility, rumen fermentation and plasma biochemical parameters of Xiangzhong black beef. The study was conducted as one-factor randomly block experimental design, eighteen Xiangzhong black beef[(330±30) kg] were blocked into 3 groups with 6 beef per group. Control group was supplemented with a basal diet, and experimental groups were supplemented with 120 and 240 g/kg Saccharomyces cerevisiae, respectively. The pre-test lasted for 10 d, and the test lasted for 30 d. The results showed as follows:1) dietary Saccharomyces cerevisiae supplementation had no significant differences on average daily gain and feed to gain ratio (P>0.05). 2) Dietary Saccharomyces cerevisiae supplementation significantly decreased fecal excretion of crude protein (P<0.05), but had no significant effects on digestibility of dry matter, neutral detergent fibre and crude protein (P>0.05). 3) Ammonia nitrogen and volatile fatty acids concentrations were not significantly affected by Saccharomyces cerevisiae supplementation (P>0.05). 4) Dietary supplementation of 240 g/kg Saccharomyces cerevisiae significantly decreased plasma total cholesterol concentration (P<0.05). The results indicate that dietary supplementation of 240 g/kg Saccharomyces cerevisiae can decrease fecal excretion of crude protein and plasma total cholesterol concentration, which play important roles in decreasing nitrogen emission, improving husbandry environment and promoting health of beef.

Key words： Xiangzhong black breef; total cholesterol; volatility fatty acid; feed to gain ratio; growth performance

Cite this article

CHEN Liang, JIE Hongdong, REN Ao, ZHOU Chuanshe, TAN Zhiliang, LI Bin . Effects of Saccharomyces cerevisiae on Nutrient Digestibility, Rumen Fermentation and Plasma Biochemical Parameters of Xiangzhong Black Beef[J]. Chinese Journal of Animal Nutrition, 2017 , 29(9) : 3359 -3365 . DOI: 10.3969/j.issn.1006-267x.2017.09.041

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