高原地区3种肉鸡的饲养试验及对生产性能影响的比较研究

Comparative Study on Feeding Experiment and Productive Performance of Three Broilers in Plateau Area

为评价高原地区黄羽肉鸡、青脚麻鸡和黑麻鸡的生产性能,选取1日龄黄羽肉鸡、青脚麻鸡和黑麻鸡各3000只,相同条件下饲养17周后出栏,测定每周的增重和生长速度。结果显示,黄羽肉鸡、青脚麻鸡和黑麻鸡统一管理条件下饲养17周,累计料重比分别为2.03∶1、2.77∶1、2.91∶1;1~17周龄黄羽肉鸡的累计成活率为96.3%,明显高于青脚麻鸡的累计成活率(90.3%)和黑麻鸡的累计成活率(90.2%),青脚麻鸡和黑麻鸡成活率无明显差异;黄羽肉鸡、青脚麻鸡和黑麻鸡的出壳重差别不显著,饲养17周3个品种的相对生长速度无明显差异,黄羽肉鸡的绝对生长速度高于青脚麻鸡和黑麻鸡。试验结果表明,黄羽肉鸡的增重、各阶段的料重比和生长速度等生产性能优于青脚麻鸡和黑麻鸡。

In order to evaluate the productive performance of yellow-feathered broilers,green-footed flax chickens and black flax chickens in plateau area,3000 with aged one day of yellow-feathered broilers,green-footed flax chickens and black flax chickens were selected respectively and fed for 17 weeks under the same feeding conditions.The weekly weight gain and growth rate were measured.The results showed that the cumulative ratio of feed to gain of yellow-feathered broilers,green feet flax chickens and black flax chickens were 2.03∶1,2.77∶1,2.91∶1 respectively under unified management for 17 weeks.The cumulative survival rate of yellow-feathered broilers aged from 1 to 17 weeks was 96.3%,which was significantly higher than that of green feet flax chickens(90.3%)and black flax chickens(90.2%).There was no significant difference in survival rate between the two breeds,and there is no significant difference in shell weight among yellow-feathered broilers,green-feathered chickens and black-feathered chickens.There was no significant difference in relative growth rate of the three breeds after 17 weeks of feeding,and the absolute growth rate of yellow-feathered broilers was higher than that of the two breeds.The results showed that the weight gain,feed/gain ratio and growth rate of yellow-feathered broilers were better than those of black and blue flax chickens.