Sperm mobility is predictive of the relative genetic contribution among competing mating geese, as determined by microsatellite genotype identification of potential sires

文献类型： 外文期刊

第一作者： Wang, Jindan

作者： Wang, Jindan;Hao, Hongrun;Zhang, Jiayue;Song, Jinting;Ren, Xiaofang;Liu, Yang;Wang, Qiuju;Zhang, Ying;Wang, Xue;Liu, Shengjun;Ma, Zhigang;Chen, Zhifeng

作者机构：

关键词： Zi goose; sperm mobility rank; social rank; parent-offspring relationship; relative genetic contribution

期刊名称：POULTRY SCIENCE （ 影响因子：4.4； 五年影响因子：4.4 ）

ISSN： 0032-5791

年卷期： 2023 年 102 卷 6 期

页码：

收录情况： SCI

摘要： The low reproductive efficiency (RE) of geese limits their production in the poultry industry. To select ganders with high breeding potential, the effect of 3 sperm mobility ranks (SMRs; high-, medium-, and low-SMR) on the RE of naturally mating geese was deter-mined. To exclude the confounding effect of social rank (SR) on RE in naturally mating flocks, a 2-factor nested experimental design was used to differentiate the effects of SMR and SR on RE. Twenty-seven ganders and 135 geese (Zi geese, Anser cygnoides L.) at approximately 1 yr of age were divided into 3 flocks, each of which included the 3 SMR groups. Each SMR group included 3 ganders and 15 female geese. Relative genetic contribu-tion (RGC) is defined as the number of offspring sired by 1 male as a percentage of the entire goslings in each flock, and it was used to compare the differences in RE among ganders. The frequency of agonistic behavioral interactions (ABIs) among the ganders was video recorded in each SMR group, and the SR of each gander was determined. In total, 1,026 eggs were incubated, and 609 goslings hatched. Parent-offspring relationships among 771 individuals from the 2 generations were identi-fied using 20 microsatellite markers, and the RGC was calculated. Results showed that the SMR and SR had sig-nificant effects on RGC in naturally mating geese (P = 0.001 and P = 0.000, respectively). Significant dif-ferences in RGC were observed among the high-and medium-and low-SMR groups, with average RGCs of 14.3, 10.6, and 8.4%, respectively. The high-SMR group had the highest RGCs in each flock, and the ganders with high SR had the highest RGCs among the 3 SMRs. The study showed that in a naturally mating geese popu-lation, selecting for the sperm mobility traits of a gander can effectively improve the RE.

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