Stopping criteria for genetic improvement software for beef-cattle mating selection

IF 0.7 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY Pesquisa Agropecuaria Brasileira Pub Date : 2023-06-26 DOI:10.1590/s1678-3921.pab2023.v58.02863
Ezequiel Luís Vidal, S. D. S. Camargo, F. Cardoso
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Abstract

Abstract The objective of this work was to propose a new stopping criterion to shorten the computing time of the PampaPlus genetic improvement software, while maximizing the genetic qualification index (GQI) of the progeny, controlling inbreeding, and avoiding unintended culling. Data from two beef-cattle herds integrating PampaPlus were used. Five mating scenarios were built using different numbers of sires (9 to 37) and dams (142 to 568). The analyzed algorithm inputs were: expected progeny differences, pedigree information, maximum inbreeding, maximum and minimum number of matches for each sire, and penalty weights for poor performance. The analyzed response variables were computing time and the GQI of the progenies. Three stopping criteria were used: original stopping criterion fixed at 1,000 iterations; saturation stopping criterion (SSC), based on GQI variance; and Bhandari’s stopping criterion (BSC), which includes the generation interval parameter. SSC and BSC reduced processing time in 24.43-53.64% and in 14.32-50.87%, respectively. BSC reaches solution in less time, without losses in GQI quality. BSC is generalizable and effective to reduce the processing time of mating recommendations.
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用于肉牛交配选择的基因改良软件停止标准
摘要为了缩短PampaPlus遗传改良软件的计算时间,同时最大化子代的遗传合格指数(GQI),控制近亲繁殖,避免意外淘汰,提出了一种新的停止准则。数据来自两个整合PampaPlus的肉牛群。使用不同数量的雄性(9 ~ 37只)和雄性(142 ~ 568只)建立了5个交配场景。分析的算法输入包括:期望后代差异、系谱信息、最大近交、每个父系的最大和最小匹配数以及表现不佳的惩罚权重。分析的响应变量为计算时间和后代的GQI。使用三种停止准则:原始停止准则固定在1000次迭代;基于GQI方差的饱和停止判据(SSC);Bhandari停止准则(BSC),其中包含发电间隔参数。SSC和BSC分别缩短了24.43 ~ 53.64%和14.32 ~ 50.87%的加工时间。平衡计分卡在更短的时间内达到解决方案,没有GQI质量损失。平衡计分卡具有通用性和有效性,可有效缩短择偶建议的处理时间。
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来源期刊
Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuaria Brasileira 农林科学-农业综合
CiteScore
1.20
自引率
0.00%
发文量
45
审稿时长
9-18 weeks
期刊介绍: Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science. Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.
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