【摘要】 通过分析怀乡鸡第四世代A、B品系的产蛋性能,为怀乡鸡种质资源的评价、保护和利用提供依据。结果表明:怀乡鸡第四世代A、B两品系均在22周开产,A品系产蛋率在31周龄达到最高值82.33%,B品系产蛋率在30周龄达到最高值83.53%。A、B两品系产蛋率总体良好,但A品系在21～52周龄的平均产蛋率高于B品系2.95%。43周龄A、B两品系只均累计产蛋数分别为92.41枚和91.47枚;52周龄A、B系只均累计产蛋数分别为129.78枚,122.88枚,A品系略多于B品系。A、B两品系的蛋重均随周龄的增加而增加,且在35周龄达到最大值,分别为49.20 g和48.78 g,A品系总体平均蛋重要略低于B品系。综合各项指标的比较,怀乡鸡第四世代A、B两品系作为地方优质鸡种产蛋性能良好,A品系的产蛋率、只均累计产蛋数均比B品系高。更多还原

【Abstract】 The purpose of this paper is to provide the basis for the evaluation, protection and utilization of Huaixiang chicken germplasm resources by analyzing the egg production performance of Huaixiang chicken strains A and B of the fourth generation. The results showed that the laying rate of strain A and strain B reached the highest value of 82.33% at the age of 31 weeks and 83.53% at the age of 30 weeks. A. The laying rate of strain B was generally good, but the average laying rate of strain a was 2.95% higher than that of strain B at 21-52 weeks old. The cumulative egg production of 43 week old strain A and B were 92.41 and 91.47, respectively;The cumulative egg production of strain A and strain B at 52 weeks of age were 129.78 and 122.88, respectively. A. The average egg weight of strain a was slightly lower than that of strain B. The results showed that the laying performance of Huaixiang chicken strain A and B was better than that of strain B. the laying rate of strain a was higher than that of strain B.更多还原