Back to Search
Start Over
Rumen bacteria and meat fatty acid composition of Sunit sheep reared under different feeding regimens in China
- Source :
- Journal of the Science of Food and Agriculture. 101:1100-1110
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- Background Rumen bacteria play a critical role in feed degradation and productivity. This study evaluated the impact of feeding regimen on the rumen microbial populations and fatty acid composition of the meat of sheep. Twenty-four Sunit sheep were raised on a grass pasture from birth to 9 months of age, at which time they were randomly divided into two feeding groups: pasture feeding (PF) and barn feeding (BF). Sheep in the PF group were allowed to graze freely on wild grassland for 3 months. Sheep in the BF group were confined for 3 months to a dry barn, in which they roamed freely with corn straw and corn. Results Sheep in the PF group had greater rumen bacteria diversity. The relative abundances of the genera Butyrivibrio_2, Saccharofermentans and Succiniclasticum were increased, and that of the genus RC9_gut_group was decreased, in the PF compared to the BF sheep. The n-3 polyunsaturated fatty acid contents were greater in meat from PF sheep than from BF sheep. In addition, the α-linolenic acid (C18:3 n-3, ALA) and conjugated linoleic acid (CLA) contents were positively correlated with the abundance of Butyrivibrio_2. Conclusion Grazing may improve the diversity of rumen bacteria and increase the proportion of ALA and CLA in sheep meat. © 2020 Society of Chemical Industry.
- Subjects :
- Male
China
Meat
Rumen
030309 nutrition & dietetics
Conjugated linoleic acid
Biology
Pasture
03 medical and health sciences
chemistry.chemical_compound
0404 agricultural biotechnology
Animal science
Butyrivibrio
Grazing
Animals
chemistry.chemical_classification
0303 health sciences
geography
Sheep
Nutrition and Dietetics
geography.geographical_feature_category
Bacteria
Fatty Acids
food and beverages
Fatty acid
04 agricultural and veterinary sciences
biology.organism_classification
Animal Feed
040401 food science
Gastrointestinal Microbiome
chemistry
Female
Agronomy and Crop Science
Barn (unit)
Food Science
Biotechnology
Polyunsaturated fatty acid
Subjects
Details
- ISSN :
- 10970010 and 00225142
- Volume :
- 101
- Database :
- OpenAIRE
- Journal :
- Journal of the Science of Food and Agriculture
- Accession number :
- edsair.doi.dedup.....cdaa105de8517466dccd79a9e87d61a3