Modulation of rumen fermentation and microbial community through increasing dietary cation-anion difference in Chinese Holstein dairy cows under heat stress conditions
| Autor: | Fachun Wan, Shaoxun Tang, Yuannian Yu, Peihua Zhang, Jianhua He, Zhiliang Tan, Shen Weijun, B.L. Feng, L.Y. Yong, X.Y. Li, Dasheng Yang, Zuo Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Anions
China animal structures Rumen Applied Microbiology and Biotechnology 03 medical and health sciences Animal science Cations Ruminococcus Animals Lactation 030304 developmental biology chemistry.chemical_classification 0303 health sciences Heat index Cross-Over Studies biology Bacteria 030306 microbiology Chemistry Microbiota Fatty acid General Medicine biology.organism_classification Fatty Acids Volatile Animal Feed Heat stress Diet Summer season Dairying Microbial population biology Fermentation Cattle Female Fibrobacter Heat-Shock Response Biotechnology |
| Zdroj: | Journal of applied microbiologyReferences. 130(3) |
| ISSN: | 1365-2672 |
| Popis: | AIMS The effect of increasing dietary cation-anion difference (DCAD) on rumen fermentation and ruminal microbial community in dairy cows under heat stress (HS) conditions were evaluated. METHODS AND RESULTS This study was performed as a two-period cross-over design during the summer season, with eight lactating dairy cows randomly distributed to either a control DCAD diet (CON: 33·5 mEq/100 g DM) or high DCAD diet (HDCAD: 50·8 mEq/100 g DM). Throughout the present study, the temperature and humidity index (THI; 80·2 ± 4·29) was generally elevated above the threshold (THI = 72) that is reported to cause HS in lactating dairy cows. Rumen liquid samples were collected on 15 and 21 d during each 21 d-period. The absolute concentration of ruminal total volatile fatty acid (TVFA) in HDCAD treatment was significantly (P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text