Reduced-rank estimation of genetic parameters for egg production traits and cluster analyses with predicted breeding values

IF 0.8 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Acta Agriculturae Scandinavica Section A-Animal Science Pub Date : 2018-04-03 DOI:10.1080/09064702.2019.1580308

L. Freitas, R. Savegnago, N. V. Grupioni, S. B. Ramos, N. B. Stafuzza, E. Figueiredo, G. S. Schmidt, M. Ledur, D. P. Munari

引用次数: 0

Abstract

ABSTRACT The aims of this study were to compare the suitability of the multi-trait (MUT) model to estimate genetic parameters with that of 13 reduced-rank principal component models (PC1 to PC13), and then to explore the additive genetic patterns of the breeding values obtained from these using clustering analyses of egg production traits. A total of 1,212 records were used to estimate genetic parameters using the MUT and PC models. The PC4 model was the best representation of the data since it had a lower AIC value and was more parsimonious than the MUT model. The estimated heritability of the age at the first egg (AFE) trait from this model was 0.28 ± 0.06, and the estimated genetic correlation between AFE and total egg production (TP) was −0.52 ± 0.23. Potentially animals from cluster 2 are more likely to be in the selected group to help improve the egg production.

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产蛋性状遗传参数的降阶估计及预测育种值的聚类分析

摘要本研究的目的是比较多性状(MUT)模型与13个降阶主成分模型(PC1 ~ PC13)的遗传参数估计的适用性，并利用产蛋性状聚类分析，探讨多性状(MUT)模型估计遗传参数的加性遗传模式。使用MUT和PC模型共使用1212条记录来估计遗传参数。PC4模型是数据的最佳表示，因为它具有较低的AIC值，并且比MUT模型更简洁。该模型估计首卵龄(AFE)性状的遗传力为0.28±0.06,AFE与总产蛋量(TP)的遗传相关性为- 0.52±0.23。可能来自第2类的动物更有可能被选中帮助提高产蛋率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Agriculturae Scandinavica Section A-Animal Science 农林科学-奶制品与动物科学

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： Acta Agriculturæ Scandinavica, Section A – Animal Science publishes results of original research in animal science and their applications related to the following topics: -Animal breeding and genetics -Molecular genetics -Animal physiology and reproduction -Nutrition and feeding -Animal behaviour and welfare -General animal husbandry and systems of production, including economic and technical aspects -Hygiene and quality of animal products In addition to original articles, covering basic as well as applied subjects, the journal features review articles and short communications. Acta Agriculturæ Scandinavica, Section A – Animal Science forms part of a trilogy of titles published on behalf of the Nordic Association of Agricultural Scientists (NJF). The series also includes Section B - Soil & Plant Science and the recently launched Section C - Food Economics . Acta Agriculturae Scandinavica A, B and C are available to purchase as a combined subscription. This provides access to all three journals in the series, and is available to institutional subscribers only. For full pricing information, please view the Taylor & Francis Journals Price List here. Scientists in research, teaching and extension with specialised interest in animal science and production.