【摘要】 本文用多变量相关分析和通径分析方法,对豫州褐壳蛋鸡5个品系产蛋性能方面的性状进行相关分析,结果表明,将开产日龄、40周龄平均蛋重和40周龄产蛋数,作为蛋鸡早期选种指标是适宜的。更多还原

【Abstract】 With multiple-variable correlation analysis and path coefficient analysis methods, the traits related to the egg laying performance of the five strains of Yuzhou Brown-shell-egg layer were analysed. The results showed that it was suitable to take age at first laying, meaned egg size during the 40th week and egg production during the 40th week as measures for early layer selection.更多还原