BACKGROUND Climate change is expected to have a negative impact on food availability. While most efforts have been directed to reducing greenhouse gas emissions, complementary strategies are necessary to control the detrimental effects of climate change on farm animal performance. The objective of this study was to develop novel animal resilience phenotypes using reaction norm slopes, and examine their genetic and genomic parameters. A closely monitored dairy goat population was used for this purpose. RESULTS Individual animals differed in their response to changing atmospheric temperature and a temperature-humidity index. Significant genetic variance and heritability estimates were derived for these animal resilience phenotypes. Furthermore, some resilience traits had a significant unfavourable genetic correlation with animal performance. Genome-wide association analyses identified several candidate genes related to animal resilience to environment change. CONCLUSIONS Heritable variation exists among dairy goats in their production response to fluctuating weather variables. Results may inform future breeding programmes aimed to ensure efficient animal performance under changing climatic conditions.

中文翻译：

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农场动物对天气变化的适应能力的新表型的遗传分析。


背景技术预计气候变化将对粮食供应产生负面影响。虽然大多数努力都是为了减少温室气体排放，但有必要采取补充战略来控制气候变化对农场动物生产性能的不利影响。本研究的目的是利用反应常态斜率开发新的动物恢复表型，并检查其遗传和基因组参数。为此目的，使用了密切监测的奶山羊种群。结果 个体动物对大气温度变化和温湿度指数的反应不同。对这些动物恢复力表型得出了显着的遗传方差和遗传力估计。此外，一些复原力特征与动物的表现具有显着的不利遗传相关性。全基因组关联分析确定了与动物对环境变化的适应能力相关的几个候选基因。结论 奶山羊对波动天气变量的生产反应存在遗传变异。结果可以为未来的育种计划提供信息，以确保动物在不断变化的气候条件下高效表现。