| 旧院黑鸡生产性能系统观察 |
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| 引用本文： | 徐恢中 许由. 旧院黑鸡生产性能系统观察[J]. 西南大学学报(自然科学版), 1994, 16(3): 218-221 |
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| 作者姓名： | 徐恢中 许由 |
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| 作者单位： | 西南农业大学动物养殖学院 |
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| 摘 要： | 引种观察表明，旧院黑鸡在中等营养水平和笼养条件下，１８周龄时体重达１２８３．２ｇ，料肉比为３．４２：１，５００日龄平均产蛋量为７６枚，比产区散养时提高了１９．８７％。成年公鸡体重２５３４．８ｇ，比散养时减少３．０８％，主要体尺变化不明显，胴体率，全净膛率分另为９１．５％和８１．４％，胸肌蛋白质含量为２６．０４％，１３种必需和半必需氨基酸占氨基酸的５８．４７％。旧院黑鸡在高温高湿笼养的条件下，生产性
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| 关 键 词： | 鸡 经济性状 生产性能 黑鸡 |
A SYSTEMATIC OBSERVATION OF THE PRODUCTION PERFO- RMANCE FOR JIUYUAN BLACK FOWL(GALLUS DOMESTICUS) |
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| Xu Huizhong,Xu You,Huang Yong,Xiang Rongshu,Jiang Shunshi,Long Xiaohai,Shan Tianxi,Du Shiming. A SYSTEMATIC OBSERVATION OF THE PRODUCTION PERFO- RMANCE FOR JIUYUAN BLACK FOWL(GALLUS DOMESTICUS)[J]. Journal of southwest university (Natural science edition), 1994, 16(3): 218-221 |
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| Authors: | Xu Huizhong Xu You Huang Yong Xiang Rongshu Jiang Shunshi Long Xiaohai Shan Tianxi Du Shiming |
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| Abstract: | The breed-importing observation of the Jiuyuan Black Fowl raised under eage-rearing conditions with medium nutrition level has shown that 18-week-old chickens have an average body weight of 1 283.2 g and a food/meat ratio of 3.42;the average egg production for 500-day -old chickens is 19.87%higher than that for the same breed in their original inhabitant area,being 76 eggs,the body weight of adult roosters averages 2534.88,3,08%lower than it was before their migration. The essential measuring of the body shows no great variation,Corpse rate and total meat rate are 91.5%and 81.4%,respectively. Protein content of the sternal muscles is 26.04%and 13 essential and semi-essential amino acids constitute 58.47%of the total.Theproduction performance of Jiuyuan Black Fowls appears fairly satisfactory under housed Conditions with high temperature and high himidity. |
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| Keywords: | domestic fowl production traits growth characteristic nutritive value |
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