估算泰国本土鸡（Pradu Hang Dam）的繁殖性状的加性遗传、显性和雌雄亲代方差。

Estimation of additive genetic, dominance, and mate sire variances for fertility traits in Thai native (Pradu Hang Dam) chickens.

机构信息

Faculty of Agriculture, Department of Animal Science, Khon Kaen University, Khon Kaen, 40002, Thailand.

Network Center for Animal Breeding and OMICS Research, Khon Kaen University, Khon Kaen, 40002, Thailand.

出版信息

Trop Anim Health Prod. 2021 Jan 7;53(1):81. doi: 10.1007/s11250-020-02485-2.

DOI:10.1007/s11250-020-02485-2

PMID:33411235

Abstract

The objective of this study was to compare the appropriate models used to estimate the value of genetic parameters in fertility traits: fertility (FER), hatchability of fertile eggs (HOF), and hatchability of eggs set (HOS) in Thai native (Pradu Hang Dam) chickens. Data were collected for each fertility trait from 3435 test-week records from 715 hens, 158 mate sires, and 972 pedigree animals. Three random regression models were analyzed: model 1 (M1: A + PE) was adjusted by using additive genetic and permanent environmental effects. Model 2 (M2: A + PE + D) was adjusted by using the dominance effect. Finally, model 3 (M3: A + MS + PE + D) was adjusted by using the mate sire effect. The results found the low heritability of FER (M1 to M3), HOF (M1 to M3), and HOS (M1 to M3) ranged from 0.031-0.040, 0.037-0.066, and 0.040-0.059, respectively. Adjustment for the dominance and mate sire effects in M3 reduced the upward bias in heritability and improved the accuracy of variance component estimates compared to M1 and M2. In conclusion, the genetic evaluation for FER, HOF, and HOS can include the dominance and MS effects to increase the accuracy of evaluation of breeding values and plan for mate selection in breeding programs.

摘要

本研究旨在比较用于估计生育性状遗传参数的适当模型

泰国本土鸡（Pradu Hang Dam）的繁殖力（FER）、可孵化种蛋的孵化率（HOF）和种蛋的孵化率（HOS）。从 715 只母鸡、158 只交配公鸡和 972 只系谱动物的 3435 个测试周记录中收集了每个生育性状的数据。分析了三个随机回归模型：模型 1（M1：A + PE）通过使用加性遗传和永久环境效应进行调整。模型 2（M2：A + PE + D）通过使用显性效应进行调整。最后，模型 3（M3：A + MS + PE + D）通过使用交配公鸡效应进行调整。结果发现，FER（M1 至 M3）、HOF（M1 至 M3）和 HOS（M1 至 M3）的低遗传力范围分别为 0.031-0.040、0.037-0.066 和 0.040-0.059。与 M1 和 M2 相比，在 M3 中调整显性和交配公鸡效应降低了遗传力的上偏，并提高了方差分量估计的准确性。总之，FER、HOF 和 HOS 的遗传评估可以包括显性和 MS 效应，以提高对育种值评估和交配选择计划的准确性。