【摘要】 为了更好摸清保种群和选育群中清远麻鸡单冠的冠齿数的变异与分布，文章对清远麻鸡保种群、选育群中的快羽系以及慢羽系分别进行了调研，进一步探讨了慢羽系单冠不同冠齿数比较差异，以及冠齿数与不同日龄的体重(42、70、105)、体尺(冠高、胫长和胫围)等的相关性。结果表明：清远麻鸡各品系的大冠齿数均以5齿为主，总冠齿数均以5、6和7齿为主，其中清远麻公鸡总冠齿数都大于4齿。大冠齿数和总冠齿数对清远麻公鸡各阶段体重和体尺均无影响和相关，大冠齿数≥6和总冠齿数为7的清远麻母鸡生长性能较好。在不同冠齿数相关性中，清远麻慢羽系母鸡的大冠齿数与42日龄体重极显著弱正相关(r=0.161,P<0.01),初步表明单冠中的大冠齿数可以对清远麻慢羽系母鸡早期的42日龄体重进行辅助选育。更多还原

【Abstract】 To better understand the variability and distribution of comb notches number of single-combed Qingyuan Partridge Chickens in the conservation and breeding populations, this study investigated the fast-feathering and slow-feathering lines within the conservation and breeding populations of Qingyuan Partridge Chickens. Furthermore, the study explored the differences in comb notch numbers among slow-feathering lines, as well as the correlations between comb notch numbers and body weight(at 42, 70, and 105 days of age), body measurements(comb height, tibia length, and tibia circumference) at different ages. The results indicated that the predominant comb notch numbers for various strains of Qingyuan Partridge chickens were 5 for large ones, and 5, 6, and 7 notches are the majority, among which the comb notches of male Qingyuan Partridge Chickens are all above 4. Large comb notch number and total comb notch number showed no impact or correlation with body weight and body measurements at various stages for male Qingyuan Partridge chickens. The hens with a large comb notch number ≥6 and a total comb notch number of 7 exhibited better growth performance. Among the correlations with different comb notch numbers, there was a significantly weak positive correlation between large comb notch number in slow-feathering line hens of Qingyuan Partridge chickens and body weight at 42 days of age(r=0.161,P<0.01), indicating that the large comb notch number in single-combed Qingyuan Partridge slow-feathering line hens could assist in early selection for body weight at 42 days of age.更多还原