›› 2007, Vol. 34 ›› Issue (9): 5-7.

• 动物营养与饲料科学 • 上一篇    下一篇

补饲不同品质饲草对哺乳期犊牛营养物质消化率和生长发育的影响

王斯琴塔娜,于彦,刘晗露,吐日根白乙拉   

  1. 内蒙古农业大学动物科技学院,呼和浩特 010018
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-09-20 发布日期:2007-09-20

Nutrient Digestibility and Growth of Sulking Calves Fed Various Quality Forages

WANG Siqintana,YU Yan, LIU Hanlu, TURGEN Baiyila
  

  1. College of Animal Science, Inner Mongolia Agricultural University, Huhhot 010018,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-09-20 Published:2007-09-20

摘要: 选择母体体格和体况相近,犊牛健康、出生体重和体尺相近的荷斯坦公犊牛10头,随机分为2组(n=5),分别补饲玉米秸秆(CFS)和青干草(H),通过消化试验和饲养试验,探讨了犊牛哺乳期补饲不同品质的饲草对营养物质摄入量、消化率和生长发育的影响。定量饲喂牛奶,自由采食精料和饲草。结果显示:断奶时,2组牛精料采食量基本一致;粗料采食量H组高于CFS组(554.4 g/d和172.0 g/d,P<0.01);H组干物质采食量高于CFS组13.4%,但差异不显著(P>0.05)。H组DM和EE消化率略高于CFS组(P>0.05)。H组NDF、ADF消化率比CFS组分别提高了17.53%(P<0.01)、101.26%(P<0.01),但总干物质、粗蛋白质等其他营养物质消化率无明显差异( P>0.05)。H组日增重比CFS组提高了8.19%(696.3 g/d和753.2 g/d,P>0.05);胸围、胸宽增量分别提高了5.20%、78.26%,但差异均不显著(P>0.05);体高、体长增量组间无明显差异(P>0.05)。另外,观察到补饲H的犊牛后躯发育明显优于补饲CFS。结果表明:哺乳期间补饲青干草,可提高断奶时犊牛干物质采食量和营养物质消化率,特别是纤维性物质的摄入和消化;有利于小母牛更早、更多地利用粗饲料,有利于其向乳用方向发育。

关键词: 哺乳犊牛; 粗料; 营养物质消化率; 发育

Abstract: 10 healthy Holstein calves with similar maternal body measurement, birth weight, body measurement, were selected randomly to two groups and fed corn straw(FCS) and hay (H) respectively. The nutrient digestibility and growth performance were measured. The results showed that H had lower concentrate intake (P>0.05) and higher Forage (P<0.01) and dry matter intake (P>0.05) than FCS. Compared with FCS, NDF (P<0.01), ADF (P<0.01), crude protein (CP) (P>0.05), Ash (P>0.05) of digestibility, daily gain (P>0.05), chest girth (P>0.05), chest width (P>0.05) of H were higher. It was concluded that supplementing hay would increase the dry matter intake and nutrient digestibility of sulking calves and improve the growth performance of sulking calves and make a good condition for finishing.

Key words: sulking calves; forage; digestibility of nutrient; growth

中图分类号: