›› 2009, Vol. 36 ›› Issue (5): 18-20.

• 动物营养与饲料科学 • 上一篇    下一篇

不同生长期高粱奶牛瘤胃能量降解率的研究

郭亮1,孙守钧1,罗峰1,金曙光2,闫素梅2   

  1. (1.天津农学院, 天津 300384; 2.内蒙古农业大学, 呼和浩特 010018)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-05-20 发布日期:2009-05-20

Study of Bred Sorghum for Feedstuffs on Energy Digestion Characteristics in Rumen of Lactating Cows

GUO Liang1,SUN Shou-jun1,LUO Feng1,JIN Shu-guang2,YAN Su-mei2   

  1. (1.Tianjin Agricultural University, Tianjin 300384, China; 2.Inner Mongolia 〖JP〗Agricultural University, Hohhot 010018, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-05-20 Published:2009-05-20

摘要: 试验选用新培育的品种天农青饲Ⅰ号饲用高粱原料,研究其在泌乳奶牛瘤胃内的能量养分消化代谢。选用2头健康泌乳奶牛,试验原料为天农青饲Ⅰ号品种的2种不同栽培处理的样品(A、B),分别测定风干全株穗天农青饲Ⅰ号高粱A组和天农青饲Ⅰ号高粱B组奶牛瘤胃内9个时间点(0、2、4、8、12、24、36、48和72 h)的能量降解率。结果表明,品种高粱A原料能量值为11.22 MJ/kg,泌乳奶牛的瘤胃能量降解率为59.41%;品种高粱B的原料能量值为15.38 MJ/kg,泌乳奶牛瘤胃能量降解率为62.69%。试验品种高粱的栽培技术及其物理化学特性,影响泌乳奶牛的瘤胃能量降解率。

关键词: 高粱; 泌乳奶牛; 能量; 瘤胃降解率

Abstract: The rumen digestion trial was conducted to determine the effects of new bred sorghum forages in rumen of lactating cows on digestibility of energy. Sorghums in this experiment came from new bred variety, were respectively No.1 Tiannong sorghum forage A and No.1 Tiannong sorghum forage B, which dried by nature air with grains and straw. Two ruminant fistula lactating cows were used in this experiment. Two sorghum forages respectively was incubated and removed in rumen after 0, 2, 4, 8, 12, 24, 36, 48, 72 h, It was observed that sorghum forages resulted in energy digestion. The energy digestibility have respectively significantly difference at 0, 2, 4, 8, 12, 24, 36, 48, 72 h from sorghum forage A or sorghum forage B. The energy of sorghum forage A and sorghum forage B, were respectively 11.22 and 15.38 MJ/kg. The energy digestibility of sorghum forage A and sorghum forage B, were 59.41% and 62.69% at 72 h in rumen respectively. The planting technique of sorghums was able to affect the digestibility of energy. The physical and chemical performance of bred sorghum affected the digestion in rumen.

Key words: bred sorghum; lactating cows; energy; rumen digestibility

中图分类号: