肉鸽的品系杂交效果分析

４个来源不同、经过３ａ选育的肉用白王鸽品系，从中选出３个品系进行品系杂交试验（Ａ、Ｂ、Ｃ、Ｄ组），并用４个纯系（Ⅰ、Ⅱ、Ⅲ、Ⅳ）作对照，试图筛选出杂交效果优秀的组合用于商品生产。杂交试验结果显示，杂交效果不够理想。杂种优势率最高的仅为３．０４％（Ｃ组的孵化率），而４周龄体重（Ａ、Ｃ组）和４周龄成活率（Ｂ、Ｃ组）的杂交优势率为负值。正反杂交组合比较，在４周龄体重上，Ⅲ系作为父本（Ｂ、Ｄ组）显著高于作为母本（Ａ、Ｃ组）的组合（Ｐ＜０．０５）。各品系的全面配合力测定，有待于进一步试验。

Study on Crossing between Strains of Meat Pigeon

Four strains of meat pigeon that came from different resources and had been bred for 3 years were involved in this study. In order to select outstanding cross combination, 3 of the 4 strains were used to carry out hybridization tests (A, B, C and D), and 4 pure strains were designed as control groups (Ⅰ, Ⅱ, Ⅲ and Ⅳ). The tests demonstrated that, the results of crossing were not good, with the highest heterosis rate of only 3.04% (brood rate of C group), and negative effects were responded on 4 week body weight (A, C groups) and survival ratio of 4 week squabs (B, D groups). Reciprocal crossing groups compared, the groups that Ⅲ strains acted as fateral line was notably superior to the groups Ⅲ strain as material line in 4 week body weight. More experiment about coordinating tests is to be carry out in future.