动物营养学报2015，Vol.27Issue(11)：3429-3437,9.DOI:10.3969/j.issn.1006-267x.2015.11.014
饲粮中添加禾王草对泌乳奶牛瘤胃发酵和生产性能的影响
Effects of Pennisetum sp. Supplied in Diet on Ruminal Fermentation and Performance of Dairy Cows
摘要
Abstract
This experiment was conducted to investigate the effects of dietary supplementation of Pennisetum sp. silage and Pennisetum sp. hay on ruminal fermentation, nutrient digestibility and performance of dairy cows. Forty-five healthy Chinese Holstein lactating dairy cows were randomly assigned into 3 groups with 15 cows in each group by milk yield, parity and days in milk. Roughages in control group ( CG) were whole corn silage, Chinese wildrye and alfalfa hay, those in trial groupⅠwere Pennisetum sp. silage, whole corn silage, Chinese wildrye and alfalfa hay, and those in trial group Ⅱ were Pennisetum sp. hay, whole corn silage and alfalfa hay. Nutrient levels of the three diets were close. The pre-trial lasted for 10 days, and the trial lasted for 60 d. The results showed as follows:1) compared with CG, the content of ammonia nitrogen of acetate in ru-men fluid, and milk protein percentage in trial groupⅠwere significantly increased ( P<0.05) . The other milk composition, dry matter intake, milk yield and nutrient digestibility had no significant differences (P>0.05). The benefit per cow per day improved 1.19 yuan. 2) Compared with CG, the milk composition and nutrient digestibility in trial groupⅡwere not significantly changed ( P>0.05) , and the content of ammonia nitrogen in rumen fluid was significantly decreased ( P<0.05) . The dry matter intake and milk was slightly increased ( P>0.05) . The benefit per cow per day improved 2.07 yuan. It is concluded that partial replacement of whole corn silage with Pennisetum sp. silage and partial replacement of alfalfa hay with Pennisetum sp. hay in diets can bring in better economic benefit without influencing cows' performance.关键词
禾王草/荷斯坦奶牛/瘤胃发酵/消化率/生产性能Key words
Pennisetum sp./Holstein dairy cows/ruminal fermentation/digestibility/performance分类
农业科技引用本文复制引用
马健,刘艳芳,王雅晶,曹志军,李胜利,余雄,杨基,雷小英,马亚宾..饲粮中添加禾王草对泌乳奶牛瘤胃发酵和生产性能的影响[J].动物营养学报,2015,27(11):3429-3437,9.基金项目
现代农业(奶牛)产业技术体系建设专项资金( CARS-37) （奶牛）
