旧院黑鸡

1

旧院黑鸡蓝壳蛋与家鸡非蓝壳蛋蛋壳显微结构研究

A comparative study of the microstructure between blue eggshells from " jiuyuan black fowls " and non-blue egg-shells from common domestic chickens
2

旧院黑鸡蓝壳蛋蛋壳强度比其他非蓝壳蛋蛋壳高。

The mechanical strength of blue eggshells from " Jiuyuan Black Fowls " is greater than non - blue eggshells from other chickens .
3

各鸡种的杂合度都较高，平均杂合度范围是0.629~0.681，最高的是泸宁鸡（0.681），最低的是旧院黑鸡（0.629）。

The mean heterozygosity of 8 chicken breeds was all over 0.5 . The highest was the Luning chicken ( 0.681 ), and the lowest was the Jiuyuan Dark chicken ( 0.629 ) .
4

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3.42：1500日龄平均产蛋量为76枚，比产区散养时提高了19.87%。

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 ;