不同品质粗饲料对断奶至7月龄犊牛生长发育及营养物质消化率的影响

›› 2008, Vol. 1 ›› Issue (9): 9-11.

不同品质粗饲料对断奶至7月龄犊牛生长发育及营养物质消化率的影响

崔利宏，于彦，王斯琴塔娜，吐日根白乙拉

内蒙古农业大学动物科学与医学学院，呼和浩特 010018

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-09-20 发布日期:2008-09-20

Effect of Different Forages Quality on Nutrient Digestibility and Growth in Calves Weaning to 7-monthold

CUI Lihong, YU Yan, WANG Siqintana, TURGEN Baiyila

College of Animal Science and Animal Medicine, Inner Mongolia Agricultural University, Huhhot 010018, China

Received:1900-01-01 Revised:1900-01-01 Online:2008-09-20 Published:2008-09-20

摘要/Abstract

摘要： 选用从哺乳期开始分别补饲玉米秸秆(CFS组)和青干草(H组)的两组试验犊牛(n=5)。断奶后继续分别饲喂CFS和H，定量饲喂精料（2 kg/d）。通过消化试验和饲养试验，跟踪研究了饲喂不同品质粗饲料对断奶到7月龄阶段犊牛营养物质摄入量、消化率和生长发育的影响。结果显示，7月龄时，CFS和H组日采食量分别为2.25和3.81 kg（P<0.01）；H组和CFS组比较，DMI、NDF、ADF、CP、Fat摄入量明显提高，其消化率分别为63.6%、51.2%、43.5%、64.3%、55.6%和57.5%、43.3%、40.4%、44.4%、59.4%，除了CP消化率差异极显著外（P<0.01），其余均不显著（P>0.05）；H组和CFS组日增重(kg/d)差异极显著（0.788和0.522 kg/d,P<0.01)，体斜长增量（18.3和9.5 cm）和胸围增量(24.1和18.6 cm)差异显著(P<0.05),体高增量（14.0和9.7 cm）差异不显著（P>0.05）。结果表明，给断奶至7月龄阶段犊牛饲喂混合青干草比饲喂玉米秸秆,更能提高粗饲料采食量和干物质总摄入量,有利于营养物质消化利用,促进犊牛生长发育,尤其对体长和胸围的发育效果明显。

关键词: 断奶犊牛; 粗饲料; 营养物质消化率; 发育

Abstract: Two groups of calves (n=5) weaning to 7-month old fed with corn stover(CT) and hay (H) respectively were selected and given mixed concentrate (2kg/d ).Effects of different quality on the digestibility and growth performance of calves during the age of weaning to 7-month were investigated. The results showed that daily feed intake of CT and H groups were 2.25 and 3.81 kg (P<0.01), respectively; dry matter intake (DMI), neutral detergent fiber (NDF), acid detergent fiber (ADF), crude protein (CP) and fat intakes in H group had higher than CFS, its digestibility were 63.6%, 51.2%, 43.5%, 64.3%, 55.6% and 57.5%, 43.3%, 40.4%, 44.4%, 59.4%; besides digestibility of CP in two groups were significantly different (P<0.01). Daily gain in H and CFS groups were significant (0.788 and 0.522 kg/d, P<0.01), body slanting length (18.3 and 9.5 cm) and chest girth were significant (P>0.05), change of heights was no difference. It was concluded that comparing with corn-straw，supplementing grass hay would increase the dry matter intake and nutrient digestibility of calves fed during the age of weaning to 7-month and improve the growth performance, especially development of body slanting length and chest girth.

Key words: weanling calves; forage; digestibility of nutrient; development

中图分类号:

S816.5

崔利宏;于彦;王斯琴塔娜;吐日根白乙拉. 不同品质粗饲料对断奶至7月龄犊牛生长发育及营养物质消化率的影响[J]. , 2008, 1(9): 9-11.

CUI Lihong;YU Yan;WANG Siqintana;TURGEN Baiyila. Effect of Different Forages Quality on Nutrient Digestibility and Growth in Calves Weaning to 7-monthold[J]. , 2008, 1(9): 9-11.

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