›› 2015, Vol. 42 ›› Issue (7): 1705-1710.doi: 10.16431/j.cnki.1671-7236.2015.07.013

• 动物营养与饲料科学 • 上一篇    下一篇

不同营养水平日粮对荷斯坦奶公牛育肥效果的影响

李晓蒙1, 李秋凤1, 曹玉凤1, 于春起2, 李建国1, 高艳霞1   

  1. 1. 河北农业大学动物科技学院, 保定 071001;
    2. 福成五丰食品有限公司, 三河 065200
  • 收稿日期:2014-12-24 出版日期:2015-07-20 发布日期:2015-07-23
  • 通讯作者: 曹玉凤 E-mail:cyf278@sohu.com
  • 作者简介:李晓蒙(1989-),女,河北邯郸人,硕士生,研究方向:反刍动物营养,E-mail:lixiaomengjia2012@163.com
  • 基金资助:
    国家现代农业(肉牛)产业技术体系建设专项资金(CARS-38)

Effect of Different Dietary Nutrition Levels on Fattening Effect of Holstein Bulls

LI Xiao-meng1, LI Qiu-feng1, CAO Yu-feng1, YU Chun-qi2, LI Jian-guo1, GAO Yan-xia1   

  1. 1. College of Animal Science and Technology, Agricultural University of Hebei, Baoding 071001, China;
    2. Fucheng Wufeng Food Limited Company, Sanhe 065200, China
  • Received:2014-12-24 Online:2015-07-20 Published:2015-07-23

摘要: 试验旨在研究不同营养水平日粮对荷斯坦奶公牛育肥效果的影响。选择4月龄左右、平均体重128 kg的健康中国荷斯坦奶公牛48头,随机分成2组,每组24头。Ⅰ组饲喂低营养水平日粮(低能量、低蛋白质),Ⅱ组饲喂高营养水平日粮(高能量、高蛋白质)。预试期7 d,正试期245 d。结果表明,与Ⅰ组相比,Ⅱ组平均日增重极显著提高6.36% (P<0.01),料重比降低6.55%。随着日粮营养水平的提高,奶公牛粗蛋白质、粗脂肪、中性洗涤纤维、酸性洗涤纤维、钙、磷的表观消化率随之升高,但均未达到显著水平(P>0.05)。与Ⅰ组相比,Ⅱ组血清中葡萄糖、谷草转氨酶、谷丙转氨酶、生长激素含量分别显著提高12.52%、12.85%、9.68%、13.24%(P<0.05),而尿素氮含量显著降低10.98%(P<0.05)。与Ⅰ组相比,Ⅱ组养殖效益多收入1.37元/(头·d),全期效益多收入335.65元/头。综上所述,提高日粮营养水平,可提高奶公牛的育肥性能和经济效益。

关键词: 营养水平; 荷斯坦奶公牛; 育肥; 营养物质表观消化率; 血液生化指标

Abstract: This experiment was conducted to study the effect of different dietary nutrition levels on fattening effect of Holstein bulls.48 4-month-old Holstein bulls with an average body weight of 128 kg were allocated into two groups,group Ⅰ was fed a low nutrition level diet,group Ⅱ was fed a high nutrition level diet.Each group had 24 Holstein bulls.The pre-test period lasted for 7 days and the trial period lasted for 245 days.The results showed that compared with group Ⅰ,the ADG in group Ⅱ was significantly increased by 6.36% (P<0.01),while the F/G in group Ⅱ was decreased by 6.55%.With the increasing of dietary nutrition levels,the apparent digestibility of CP,EE,NDF,ADF,Ca and P were rising,but there was no significant differences between two groups (P>0.05).Compared with group Ⅰ,the serum GLU,AST,ALT and GH contents in group Ⅱ were increased by 12.52%,12.85%,9.68% and 13.24% (P<0.05),respectively,while the serum BUN content in group Ⅱ was decreased by 10.98% (P<0.05).Compared with group Ⅰ,the feeding profits of group Ⅱ increased by 1.37 yuan/(head·day),the total economic benefit of group Ⅱ increased by 335.65 yuan/head.In conclusion,the improvement of dietary nutrition levels could improve the fattening performance and the economic benefit of Holstein bulls.

Key words: nutrition levels; Holstein bulls; fattening; nutrient apparent digestibility; blood biochemical indices

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