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J Agric Food Chem. 2016 Jul 13;64(27):5439-45. doi: 10.1021/acs.jafc.6b00708. Epub 2016 Jun 30.

Ruminal Methanogen Community in Dairy Cows Fed Agricultural Residues of Corn Stover, Rapeseed, and Cottonseed Meals.

Wang P1,2,3, Zhao S1,2,3, Wang X1,2,3, Zhang Y1,2,3, Zheng N1,2,3, Wang J1,2,3.

Author information

1
State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China.
2
Laboratory of Quality & Safety Risk Assessment for Dairy Products of Ministry of Agriculture (Beijing), Institute of Animal Science, Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China.
3
Milk and Dairy Production Inspection Center of Ministry of Agriculture (Beijing) , Beijing, 100193, People's Republic of China.

Abstract

The purpose was to reveal changes in the methanogen community in the rumen of dairy cows fed agricultural residues of corn stover, rapeseed, and cottonseed meals, compared with alfalfa hay or soybean meal. Analysis was based on cloning and sequencing the methyl coenzyme M reductase α-subunit gene of ruminal methanogens. Results revealed that predicted methane production was increased while population of ruminal methanogens was not significantly affected when cows were fed diets containing various amounts of agricultural residues. Richness and diversity of methanogen community were markedly increased by addition of agricultural residues. The dominant ruminal methanogens shared by all experimental groups belonged to rumen cluster C, accounting for 71% of total, followed by the order Methanobacteriales (29%). Alterations of ruminal methanogen community and prevalence of particular species occurred in response to fed agricultural residue rations, suggesting the possibility of regulating target methanogens to control methane production by dairy cows fed agricultural residues.

KEYWORDS:

diversity; forages; meals; methanogen; rumen

PMID:
27322573
DOI:
10.1021/acs.jafc.6b00708
[Indexed for MEDLINE]

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