玉米粒度对泌乳羊生产性能及养分消化的影响  

Effects of Different Particle Sizes of Corn on Productive Performance and Nutrient Digestibilities of Lactating Goats

作　　者：郝艳霜[1] 姚军虎[1] 

机构地区：[1]西北农林科技大学动物科技学院,陕西杨凌712100

出　　处：《西北农业学报》2005年第3期11-14,共4页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：农业科技成果转化资金项目(02EFN216100572)

摘　　要：选择6头泌乳中期莎能奶山羊,采用2重复3×3拉丁方设计,在饲料组成完全相同的基础上,研究整粒、粗粉及细粉玉米对泌乳羊生产性能和养分消化的影响。结果表明,玉米粒度对泌乳羊各类饲料的采食量、日粮干物质食入量、乳产量及乳成分含量、奶料比、主要养分的表观消化率、血液指标均无显著影响(P>0.05),但有降低淀粉消化率的趋势(P=0.08)。说明对泌乳羊可采用整粒或粗粉的形式投喂玉米。Six mid-lactation Sannen goats were used in a 2 repeat 3 × 3 Latin square design to determine the effects of different particle sizes of corn on productive performance and nutrient digestibilities. The three groups had the same diets. The three particle sizes of corn were whole grain,coarsely cracked corn（average dia. 2.57mm） and deeply cracked corn （average dia. 0.85mm）. The treatments did not affect MI, DMI, milk yield and composition percentages of milk, the total tract apparent digestibilities of DM, OM, energy, CP, NDF and ADF, and the fecal moisture percentage.But it has the trend of reducing starch digestibilities（P=0. 08）. The trial showed that lactating goats can be feeded with whole corn or coarsely cracked corn instead of deeply processed corn.

关 键 词：玉米粒度 泌乳羊 生产性能 养分消化 

分 类 号：S826.94[农业科学—畜牧学]