Effects of feeding ground versus pelleted total mixed ration on digestion, rumen function and milk production performance of dairy cows
文献类型： 外文期刊
作者： Zhong, Rongzhen 1 ; Zhao, Chengzhen 1 ; Feng, Piao 2 ; Wang, Yitong 2 ; Zhao, Xueli 3 ; Luo, Dongwen 4 ; Cheng, Long 5 ;
作者机构： 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Jilin Prov Key Lab Grassland Farming, Changchun 130102, Jilin, Peoples R China
2.Shenyang Inst Technol, Coll Life & Engn, Fushun 113122, Liaoning, Peoples R China
3.Southwest Univ, Coll Anim Sci, Chongqing 402460, Peoples R China
4.AgResearch Ltd, Grassland Res Ctr, Private Bag 11008, Palmerston North 4442, New Zealand
5.Univ Melbourne, Fac Vet & Agr Sci, Dookie Campus, Dookie Coll, Vic 3647, Australia
6.Heilongjiang Acad Agr Sci, Inst Anim Husb, Minist Agr & Rural Affairs, Key Lab Combining Farming & Anim Husb, Hrbin 150086, Peoples R China
关键词： Dairy cattle; Milk quality; Pelleted total mixed ration; Rumen fermentation
期刊名称：INTERNATIONAL JOURNAL OF DAIRY TECHNOLOGY （ 影响因子：4.374； 五年影响因子：3.286 ）
ISSN： 1364-727X
年卷期：
页码：
收录情况： SCI
摘要： This study evaluated the effects of feeding ground (G) versus pelleted (P) total mixed ration (PTMR) on digestibility and milk production performance of mid-lactation dairy cows over a 42-days period. Results showed that, compared to GTMR, feeding PTMR increased dry matter intake and digestibility, ruminal propionate proportions and milk protein percentage, but decreased acetate-to-propionate ratio, milk fat percentage and aldehydes, acids, alcohols, and aromatic hydrocarbon proportions in milk. The PTMR did not improve milk yield but accelerated live weight recovery of cows and led to acidosis risk in lactating cows due to negative effects on rumen fermentation.
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