Effects of roughage neutral detergent fiber on dairy performance under tropical conditions
Effects of roughage neutral detergent fiber on dairy performance under tropical conditions
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DOI：
10.5713/ajas.2001.1400
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发表时间：
2001-10-01
期刊：
影响因子：
--
通讯作者：
Buaphan, S
中科院分区：
文献类型：
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作者：
Kanjanapruthipong, J;Buatong, N;Buaphan, S
本试验研究了不同粗饲料中性洗涤纤维（NDF）含量对荷斯坦×土著经产奶牛采食量、产奶量和乳成分的影响。粗饲料NDF含量分别为15%、18%、21%和24%，精饲料NDF含量为10%。实验处理是等氮和等热量的饮食。试验期间的最高和最低温湿度指数分别为85.9和76。随着粗饲料NDF含量的增加，日粮干物质、粗蛋白质、净能、4%脂肪校正乳、乳蛋白和日增重的采食量均降低（p
Holstein x indigenous multiparous dairy cows were offered diets with increasing roughage neutral detergent fiber (NDF) contents to determine the effects on intake, milk yield and compositions. Roughage NDF contents were 15, 18, 21 and 24% dry matter (DM), and concentrate NDF content was 10% DM. Experimental treatments were isonitrogenous and isocaloric diets. Maximum and minimum temperature humidity index during the experimental period were 85.9 and 76, respectively. Intakes of DM, crude protein and net energy, 4% fat corrected milk, milk protein and average daily gain decreased with increasing roughage NDF contents (p