| 闽南黄牛生长肥育期营养需要的研究──验证我国肉牛饲养标准 |
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| 引用本文： | 刘庆华,邹霞青.闽南黄牛生长肥育期营养需要的研究──验证我国肉牛饲养标准[J].福建农林大学学报(自然科学版),1995(3). |
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| 作者姓名： | 刘庆华 邹霞青 |
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| 作者单位： | 福建农业大学动物科学系 |
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| 摘 要： | 为了验证我国肉牛生长肥育期饲养标准．选用９头１４－１６月龄闽南黄公牛进行３组不同营养水平的饲养试验、消化代谢试验．３组日粮均按照我国肉牛饲养标准生长肥育期１５０－１７５ｋｇ体重范围．预期日增重分别为６００ｇ、８００ｇ、１０００ｇ水平配合．以氨化稻草、青贮蔗尾作为基础日粮．适当补充不同水平的精料。Ⅰ组为１．６５ｋｇ，Ⅱ组为２．１５ｋｇ，Ⅲ组为２．６５ｋｇ．结果表明，随着营养水平的提高，日增重也随着提高．３组日增重水平分别为５７７±５８．４、７４４±８４．５、９４９±６２．１ｇ．与饲养标准要求差异均不显著．说明我国肉牛饲养标准同样适用于南方小型黄牛．日粮精粗料比例在３２：６８，３８：６２，４３：５７之间的３组牛主要营养物质的消化率没有明显差别（Ｐ＜０．０５）．氮平衡结果均为正平衡．食入氮与沉积氮之间具有强的正相关（ｒ＝０．９８７３，ｙ＝０．４ｘ－１５）．饲料报酬与经济效益比较均以第Ⅲ组（平均日增重９４９±６．４ｇ）最佳．在试验前后血液生化指标均处于正常范围值．
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| 关 键 词： | 闽南黄牛 生长肥育期 肉牛饲养标准 消化代谢试验 |
Study on Nutrient Requirements of Growing Trient Requirements of Growing Minnan Yellow Cattle──To Verify China Feeding Standard of Beef Cattle |
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| Liu Qinghua,Zou Xiaqing.Study on Nutrient Requirements of Growing Trient Requirements of Growing Minnan Yellow Cattle──To Verify China Feeding Standard of Beef Cattle[J].Journal of Fujian Agricultural and Forestry University,1995(3). |
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| Authors: | Liu Qinghua Zou Xiaqing |
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| Abstract: | Nine head of Minnan Yellow bulls,from 14 to 16 months of age,were used to verify China Feeding Standard of Beef Cattle (FSBC)in growing period by feeding trial,and digestion aug metabolism experiments,under conditions of three different nutrient levels.The rations of the three groups were prepared according to FSBC requirements when body weight was 150-175kg and expective daily gains were 600g,800g and 1000g respectively.The basal diet was composed of ammoniated rice straw and silage, which was properly supplemented with different levels of concentrate:group Ⅰwas provided with 1.65 kg of concentrate,group Ⅱ 2.15 kg and group Ⅲ 2.65kg.The result showed that with the levels of nutrition increased, the daily gains also increased.The daily gains of the three groups were 577±58.4 g,744±84.5 g,and 949±62.1g respectively.There was no significant difference between the actural daily gains and the daily gains expected by the FSBC.It indicatec that FSBC was also suitable to small sized yellow cattle in South China.The results of digestion and metabolism experiments indicated that there was no significant difference(P<0. 05) in digestibilities of DM,CP,EE,CF,and NFE among the three groups of cattle in which the ration ratios of concentrate to roughage were 32: 68, 38:62,43:57respectively.The results of nitrogen balance trial showed it was positive balance.The correlation between N intake (x) and N deposition(y) was high(r=0. 9873, y=0. 4x-15).The third group, the average daily gain of which was 949±6. 4 g, was the best in feed conversion efficiency and economic profits.Blood biochemical parameters indicated that those parameters were in normal range before and after the experiment. |
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| Keywords: | Minnan Yellow cattle growing period China Feeding Standard of Beef Cattle digestion and metabolism experiment |
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