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草业学报 ›› 2018, Vol. 27 ›› Issue (9): 201-209.DOI: 10.11686/cyxb2017417

• 研究简报 • 上一篇    

全株青贮玉米对西门塔尔杂交牛生产性能、表观消化率及血液生化指标的影响

孙雪丽1, 李秋凤1, *, 刘英财2, 曹玉凤1, 王增林1, 李艺1, 赵洋洋1, 葛瀚聪1, 刘桃桃1, 赵立新3   

  1. 1.河北农业大学动物科技学院,河北 保定 071000;
    2.承德隆化县农牧局草原监理监测站,河北 承德 068150;
    3.隆化县益佳养殖有限公司,河北 承德 068150
  • 收稿日期:2017-10-09 修回日期:2018-02-01 出版日期:2018-09-20 发布日期:2018-09-20
  • 通讯作者: E-mail: lqf582@126.com, cyf278@126.com
  • 作者简介:孙雪丽(1992-),女,河北保定人,在读硕士。E-mail: xuelisunlq@163.com
  • 基金资助:
    国家现代农业(肉牛)产业技术体系(CARS-37),公益性行业(农业)科研专项(201503134)和河北省现代产业技术体系肉牛创新团队(HBCT2018130202)资助

Effects of whole-plant corn silage on performance, digestibility and blood biochemical parameters in Simmental crossbred bulls

SUN Xue-li1, LI Qiu-feng1, *, LIU Ying-cai2, CAO Yu-feng1, WANG Zeng-lin1, LI Yi1, ZHAO Yang-yang1, GE Han-cong1, LIU Tao-tao1, ZHAO Li-xin3   

  1. 1.College of Animal Science and Technology, Agricultural University of Hebei, Baoding 071000, China;
    2.Agricultural and Animal Husbandry Bureau, Longhua Grassland Supervision Stations in Chengde, Chengde 068150, China;
    3.Longhua Yijia Aquaculture Ltd, Chengde 068150, China
  • Received:2017-10-09 Revised:2018-02-01 Online:2018-09-20 Published:2018-09-20

摘要: 选择体重350 kg左右健康的西门塔尔杂交公牛45头随机分为3组,分别饲喂3种不同日粮,其中试验Ⅰ组(精料+玉米秸秆黄贮)、试验Ⅱ组(精料+全株青贮玉米)和试验Ⅲ组(精料+添加剂全株青贮玉米),试验期140 d。结果表明,试验Ⅲ组的日增重极显著地高于试验Ⅰ组(P<0.01)和试验Ⅱ组(P<0.01),分别比试验Ⅰ组、试验Ⅱ组高出90.35%、24.00%。试验Ⅰ组干物质采食量极显著高于试验Ⅱ组(P<0.01)和Ⅲ组(P<0.01),试验Ⅱ组和试验Ⅲ组的干物质采食量无显著差异。试验Ⅲ组和试验Ⅱ组料重比极显著低于Ⅰ组(P<0.01)。试验Ⅲ组和试验Ⅱ组的粗蛋白的表观消化率显著高于试验Ⅰ组(P<0.05),试验Ⅲ组粗蛋白表观消化率极显著高于试验Ⅰ组(P<0.01);中性洗涤纤维和酸性洗涤纤维的表观消化率Ⅲ组显著高于试验Ⅰ组(P<0.05)。肉牛血清中游离脂肪酸、瘦素的含量试验Ⅰ组显著高于Ⅱ组和Ⅲ组(P<0.05)。肉牛血清中胰岛素样生长因子Ⅰ浓度试验Ⅱ组、试验Ⅲ组显著高于Ⅰ组(P<0.05),试验Ⅱ组与试验Ⅲ组差异显著(P<0.05)。试验Ⅲ组的头均日收益比试验Ⅰ组、试验Ⅱ组分别高22.21和9.27元。综上所述,添加剂全株青贮玉米的育肥效果和经济效益最好。

关键词: 肉牛, 玉米秸秆黄贮, 全株青贮玉米, 血液生化指标, 表观消化率, 生长性能, 经济效益

Abstract: In this experiment, 45 healthy Simmental hybrid bulls weighing approximately 350 kg were randomly divided into three treatment groups that were fed different diets for a period of 140 d: GroupⅠ(concentrate +corn straw storage), Group Ⅱ (concentrate+whole-plant corn silage) and Group Ⅲ (concentrate+whole-plant corn silage+lactic acid bacteria compound preparation). The results showed that Group Ⅲ’s average daily gain was significantly higher than both Groups Ⅰ and Ⅱ (P<0.01). The daily gain of Group Ⅲ was 90.35% and 24.00% higher than Groups Ⅰ and Ⅱ respectively. The dry matter intake of Group Ⅰ was significantly higher than Groups Ⅱ and Ⅲ (P<0.01), while there were no significant differences between Groups Ⅱ and Ⅲ. The feed:gain ratio of Groups Ⅱ and Ⅲ were significantly lower than Group Ⅰ (P<0.01). The digestibility of crude protein (Measurement using the FOSS Automated Protein Analyzer (USA)[1])for Groups Ⅱ and Ⅲ was higher than Group Ⅰ (P<0.05), and especially so in the case of Group Ⅲ (P<0.01). The apparent digestibility of neutral detergent fiber and acid detergent fiber in Group Ⅲ were significantly higher than Group Ⅰ (P<0.05). The content of free fatty acids and leptin in Group Ⅰ were significantly higher than Groups Ⅱ and Ⅲ (P<0.05).The levels of bovine insulin-like growth factor in Groups Ⅱ and Ⅲ were significantly higher than Group Ⅰ(P<0.05) and there was also a significant difference between Groups Ⅱ and Ⅲ (P<0.05). The average daily benefit of Group Ⅲ was 22.21 yuan and 9.27 yuan higher than that of Groups Ⅰ and Ⅱ respectively. In conclusion, this experiment showed that, in terms of fattening effects and economic benefits, cattle diets with additive whole corn silage outperformed the other two treatments studied.

Key words: beef cattle, corn stalk yellow storage, whole plant silage corn, blood biochemical index, apparent digestibility, growth performance, economic benefit