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草业学报 ›› 2016, Vol. 25 ›› Issue (5): 165-174.DOI: 10.11686/cyxb2015551

• 研究论文 • 上一篇    下一篇

花生秧与玉米青贮配比对奶牛生产性能、血液指标及氮素利用的影响

王笑笑*, 廉红霞*, 秦雯霄, 李改英, 孙宇, 付彤, 高腾云*   

  1. 河南农业大学牧医工程学院,河南 郑州 450002
  • 收稿日期:2015-12-07 出版日期:2016-05-20 发布日期:2016-05-20
  • 通讯作者: *通信作者Corresponding author. E-mail:dairycow@163.com
  • 作者简介:作者简介:王笑笑(1985-),女,河南偃师人,在读博士。E-mail:wxiao1985@163.com。廉红霞(1977-),女,河南焦作人,讲师,博士。E-mail: lhx263@sina.com。
  • 基金资助:
    现代奶业产业技术体系建设专项资金(CARS-37)资助

Effects of peanut vine∶corn silage ratio on milk production, blood biochemistry and nitrogen use in dairy cows

WANG Xiao-Xiao**, LIAN Hong-Xia**, QIN Wen-Xiao, LI Gai-Ying, SUN Yu, FU Tong, GAO Teng-Yun*   

  1. College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China
  • Received:2015-12-07 Online:2016-05-20 Published:2016-05-20

摘要: 本试验旨在为合理利用花生秧及提高氮素利用率提供理论依据。选择产奶量一致、处于泌乳中期、体重相近、胎次相同的12头中产荷斯坦奶牛,分为3组,每组4个重复。根据3×3拉丁方试验设计,试验分3期进行,每期预饲15 d,采样期6 d。分别饲喂含有不同花生秧与玉米青贮配比的全混合日粮(TMR),3种TMR中花生秧与玉米青贮的干物质(DM)配比分别为1.0∶3.9(A组)、1.0∶1.2(B组)、1.0∶0.4(C组)。结果表明,1)花生秧与玉米青贮配比对中产荷斯坦奶牛的干物质采食量、生产性能及血液指标没有显著影响(P>0.05);2)奶牛的各乳成分组成均没有显著性差异(P>0.05),但随着花生秧比例的增加,牛奶体细胞数有降低的趋势,B组较A组的体细胞数下降了35.4%;3)随着日粮中花生秧添加比例的增加,经济效益有所提高;4)日粮B显著降低了粪氮占摄入氮的比例(P<0.05)。花生秧与玉米青贮配比在1.0∶1.2时,奶牛氮素利用及经济效益效果最佳。

Abstract: This experiment was conducted to assess the use of peanut vine to increase nitrogen availability in the diet of dairy cows. Twelve healthy Chinese Holstein dairy cows in mid-lactation were allotted to 3 groups with 4 replicates based on production performance, lactation stage, body weight and physiological status and feed different rations. The trial used a 3×3 Latin square design including three periods; each period had a 15 day pre-trial period and a 6 day sampling period. Cows were fed diets with peanut vine to corn silage ratio of 1.0∶3.9 (A), 1.0∶1.2 (B) and 1.0∶0.4 (C). Dry matter intake, milk production and blood traits were not affected by the peanut vine∶corn silage ratio (P>0.05). There were also no differences in milk composition (P>0.05), but milk somatic cell count showed a decrease trend with an increase in peanut vine content; somatic cell count of group B decreased by 35.4% compared with group A. The economic performance was increased by increasing peanut vine in the diet. Feces nitrogen (N)/N intake was decreased in group B (P<0.05). The effects of peanut vine∶corn silage ratio on production, nitrogen use and economic benefit of dairy cows was considered; N use and economic benefits were greatest when the peanut vine∶corn silage ratio was 1.0∶1.2.