巨菌草青贮替代全株玉米青贮对奶牛生产性能、乳成分和经济效益的影响

doi:10.16431/j.cnki.1671-7236.2017.07.014

《中国畜牧兽医》 ›› 2017, Vol. 44 ›› Issue (7): 1997-2002.doi: 10.16431/j.cnki.1671-7236.2017.07.014

巨菌草青贮替代全株玉米青贮对奶牛生产性能、乳成分和经济效益的影响

黄晓飞¹, 孟庆翔², 杨甲轩¹, 解祥学^2,3

1. 上海光明荷斯坦牧业有限公司, 上海 200436;
2. 中国农业大学动物科技学院, 动物营养学国家重点实验室, 北京 100193;
3. 广东溢多利生物科技股份有限公司, 珠海 519060

收稿日期:2017-01-06 出版日期:2017-07-20 发布日期:2017-07-22
通讯作者: 解祥学 E-mail:282935225@qq.com
作者简介:黄晓飞(1986-),男,江苏如皋人,学士,研究方向:动物营养与饲料科学,E-mail:huangxiaofei@brightdairy.com
基金资助:
农业部公益性行业（农业）专项（201503134）

Effects of Replacing the Corn Silage with Puelia sinese Roxb Silage on Production Performance, Composition of Milk and Economic Benefits in Dairy Cows

HUANG Xiao-fei¹, MENG Qing-xiang², YANG Jia-xuan¹, XIE Xiang-xue^2,3

1. Shanghai Bright Holstein Co., Ltd., Shanghai 200436, China;
2. State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
3. Guangdong VTR Bio-tech Co., Ltd., Zhuhai 519060, China

Received:2017-01-06 Online:2017-07-20 Published:2017-07-22

摘要/Abstract

摘要：

试验旨在研究巨菌草青贮部分或全部替代全株玉米青贮对奶牛生产性能、乳成分和经济效益的影响，采用完全随机试验设计，将90头健康的处于泌乳中后期荷斯坦奶牛，根据体重、年龄、胎次、产奶量相近原则随机分为3组，即对照组、Ⅰ组和Ⅱ组，对照组饲喂以全株玉米青贮为基础的奶牛日粮，试验组分别以巨菌草青贮替代50%和100%玉米青贮，试验期8周，其中预试期2周，正试期6周。结果显示，巨菌草青贮粗脂肪、中性洗涤纤维、酸性洗涤纤维、粗灰分、无氮浸出物分别较玉米青贮高192.3%、45.9%、34.1%、128.6%和194.3%，且均差异显著（P<0.05），粗蛋白质含量较玉米青贮低15.3%（P>0.05）。与对照组相比，Ⅰ组奶牛日产奶量显著提高了2.38 kg/d（P<0.05），而Ⅱ组奶牛日产奶量降低了0.87 kg/d，但差异不显著（P>0.05）。乳脂率、乳蛋白和乳糖含量随替代比例的增加而提高，但差异均不显著（P>0.05）。Ⅰ组每头奶牛每天可多盈利7.64元。综上所述，巨菌草青贮具有较高的饲用价值，通过合理的调配其在日粮中所占比例，可提高奶牛经济效益，满足奶牛全年对优质青贮的需要。在本试验条件下，以50%比例替代日粮中全株玉米青贮，效果最佳。

关键词: 巨菌草; 玉米青贮; 产奶量; 乳成分; 经济效益

Abstract:

This experiment was conducted to study the effects of replacing the corn silage with Puelia sinese Roxb silage on the production performance, composition of milk and economic benefic in dairy cows.90 healthy Holstein cows in middle or late lactation were chosen and randomly divided into 3 groups (control group,groups Ⅰ and Ⅱ). The control group was fed with diet based on corn silage,groups Ⅰ and Ⅱ were fed diets with Puelia sinese Roxb silage instead of 50% and 100% corn silage, respectively. The experiment lasted for 8 weeks,including 2 weeks pre-trail period and 6 weeks formal period.The results showed that:The ether extract,neutral detergent fiber,acid detergent fiber,Ash and nitrogen-free extract of Puelia sinese Roxb silage were 192.3%,45.9%,34.1%,128.6% and 194.3% higher than corn silage respectively (P<0.05),and the crude protein of Puelia sinese Roxb silage was 15.3% lower than that of corn silage (P>0.05).The milk yield of group Ⅰ was significantly increased (2.38 kg/d higher) compared with control group (P<0.05),while that in group Ⅱ was decreased (0.87 kg/d lower)(P>0.05).With the increase of Puelia sinese Roxb silage,the butter-fat percentage, lactoprotein and lactose contents were increased (P>0.05).More profits (7.64 yuan/d) could get in group Ⅰcompared with control group. It was concluded that Puelia sinese Roxb silage had a high feeding value,which could be used to fulfill the requirement of dairy cows in high feeding value silage,and the effect of 50% substitution group was the best.

Key words: Puelia sinese Roxb; corn silage; milk yield; milk composition; economic benefit

中图分类号:

S816

黄晓飞, 孟庆翔, 杨甲轩, 解祥学. 巨菌草青贮替代全株玉米青贮对奶牛生产性能、乳成分和经济效益的影响[J]. 《中国畜牧兽医》, 2017, 44(7): 1997-2002.

HUANG Xiao-fei, MENG Qing-xiang, YANG Jia-xuan, XIE Xiang-xue. Effects of Replacing the Corn Silage with Puelia sinese Roxb Silage on Production Performance, Composition of Milk and Economic Benefits in Dairy Cows[J]. , 2017, 44(7): 1997-2002.

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巨菌草青贮替代全株玉米青贮对奶牛生产性能、乳成分和经济效益的影响

Effects of Replacing the Corn Silage with Puelia sinese Roxb Silage on Production Performance, Composition of Milk and Economic Benefits in Dairy Cows

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