盘江黄牛及其杂交牛育肥中干物质、粗蛋白、综合净能需要研究

Dry Matter, Crude Protein, and Total Net Energy Requirement of Panjiang Yellow Cattle and Its Crossbreds

将３６ 头盘江黄牛及其杂交牛分成１２ 组，采用不同的日粮，进行两期育肥试验，得到不同的增重水平和实际营养物质摄入量。用各组实际采食的干物质（ ＤＭ） 、粗蛋白（ＣＰ） 、综合净能（ＮＥｍｆ） 与我国试行的《肉牛饲养标准》进行比较。结果表明，除干物质与标准相差较多（ － ６ ．３ ％ ） 外，粗蛋白和综合净能与标准相当接近（ 仅相差－ １ ．５ ％ 和２ ．８ ％ ） ，说明盘江黄牛及其杂交牛在育肥中的营养需要基本与标准相符，在配制日粮时，可以参考我国的《肉牛饲养标准》。

Panjiang yellow cattle were divided into 12 groups to investigate the body weight gain and actual nutrition intakes in two finishing experiments using different diets, and to compare the DM, CP and total NE intake with trial implementing “beef cattle feeding standard' in China. Except the big difference in DM requirement (-6.3%), values of CP and total NE requirements was very close to the feeding standard (-1.5% and +2.8%), it is concluded that nutrition requirements of fattening Panjiang yellow cattle and its crossbreds accorded with the feeding standard, and the “beef cattle feeding standard' of China could be cited in diet formulation.