单复冠基因对白羽丝毛乌骨鸡体尺性状与精液品质的影响

为观察单、复冠基因对白羽丝毛乌骨鸡的体尺性状以及精液品质的影响，寻找体尺性状和精液品质间的相互关系，对44只55周龄单、复冠白羽丝毛乌骨鸡种公鸡的体尺与精液品质进行了测定，结果表明：单冠乌鸡的体尺均值均大于复冠乌鸡；单、复冠乌鸡间精液品质无明显差异；单、复冠乌鸡的体尺性状与精液品质间的相关性均无达到显著水平；单冠乌鸡的精液品质与体尺性状间的相关性多为负相关。故在乌鸡的选育中，不仅要重视单冠基因在体尺性状方面的明显优势，还应该特别注意单、复冠乌鸡在精液品质与体尺性状相关性方面的差别。

The influence of Single and Multiple comb Genes on Body Size andSemen Quality for white-feather silky chicken

To study effects of genes on body size and semen quality for white-feather silky chicken and the relation between body size and semen quality, the body size and semen quality of 44 breeding silky cocks (55-week-old) with single and multiple comb were determined. Results indicate that the average body size of single comb silky cocks is bigger than that of multiple comb ones. The semen quality between single and multiple comb cocks and the correlation between body size and semen quality in single and multiple comb cocks both have no significant difference. The correlation between semen quality and body size in single comb cocks was negative. Besides the significant body size advantage of single comb genes, more attention should be paid to the correlation difference between body size and semen quality of single and multiple comb fowls in breeding.