| 晋南牛的选育及保种工作进展 |
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| 引用本文： | 谭年年,赵树荣,杜斌,杜红珍.晋南牛的选育及保种工作进展[J].中国牛业科学,1999(1). |
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| 作者姓名： | 谭年年 赵树荣 杜斌 杜红珍 |
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| 作者单位： | 山西省运城行署畜牧局 |
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| 摘 要： | 晋南牛经过长期的系统选育，已由役用型逐渐向肉用型转变。经测定，在一般育肥条件下，１６—２４月龄的屠宰率和净肉率分别为５０％—５８％和４０—５０％；育肥期日增重６３１—７８２ｇ；强度育肥的上述指标分别可达５９％—６３％，４９％—５３％和８５１－９６１ｇ。在保种方法上，采取区域保种，基因库保种和胚胎保种相结合，取得了良好的保种效果。
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| 关 键 词： | 晋南牛 选育 区域保种 基因库保种 胚胎保种 |
Breeding Progress and Preservation of Jinnan Cattle |
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| Tan,Niannian,Zhao,shurong,Du,Bing,Du,Hong,zhen.Breeding Progress and Preservation of Jinnan Cattle[J].China Cattle Science,1999(1). |
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| Authors: | Tan Niannian Zhao shurong Du Bing Du Hong zhen |
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| Institution: | Yuncheng Bureau of Animal Husbandry Shanxi Province 044000 |
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| Abstract: | After long period systematic breeding,Jinnan cattle have been changed from drought cattle to beef cattle.It has been tested that under useal fattening conditions, its dressing percentage and meat percentage of 16 24 month beef cattle are 50-58% and 40-50%respectively,with daily gain 631-782 g in the fattening period.After intensified fattening,the above figures can reach 58-63%,49-53% and 851-961 g respectively.A better preservation is achieved by intergration of regional preservation,gene pool preservation and embryonic preservation. |
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| Keywords: | Jinnan cattle breeding regional preservation gene pool preservation embryonic preservation |
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