摘要
春季同时用全收粪法和内源指示剂法(酸不溶灰分,AIA)测定安格斯杂交成年公牛日采食牧草量和牧草营养物质消化率。研究表明,安格斯杂交公牛日采食牧草量为20.269kg,牧草营养物质消化率相应为干物质78.82%、粗蛋白86.53%、粗脂肪75.11%、中性洗涤纤维80.07%、酸性洗涤纤维69.64%。此外,春季牧草营养成分偏低,故需进行适量补饲来满足杂交肉牛的生长需要。
Grazing feed intake and nutrients digestion rates of male Angus crossbreed were measured by the methods of collecting whole feces and AIA in spring. The results showed that the grazing daily intake was 20.269 kg, while digestion rates of nutrients were as follows： dry matter 78.82 % ,crude protein 86.53 % ,ether extract 75.11% ,DNF 80.07 % ,ADF 69.64 %. Due to the nutrimental level of forages in spring was inferior, certain supplementary feed is needed to satisfy the requirement for cattle growth.
出处
《畜牧与饲料科学》
2008年第5期7-9,共3页
Animal Husbandry and Feed Science
