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首页> 外文期刊>Journal of Veterinary Behavior: clinical applications and research >Effects of behavioral reactivity on production and reproduction traits in Dorper sheep breed
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Effects of behavioral reactivity on production and reproduction traits in Dorper sheep breed

机译：行为反应对杜泊绵羊品种生产和繁殖特性的影响

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The aim of the current research was to evaluate the effects of behavioral reactivity on production and reproduction performance in Dorper sheep, a meat breed. Temperament of animals was subjectively evaluated using a 5-point scoring system at weighing, during which sheep spent 30 seconds on the scale. The heritability of temperament was low (0.10 + 0.03). Estimated phenotypic (r(p)) and genetic (r(g)) correlations between temperament and litter size in ewes were negative and negligible (P > 0.05) at -0.06 +/- 0.18 and -0.08 +/- 0.09, respectively. Significant genetic correlations were found between lamb temperament and preweaning growth rate (r(g) = -0.44 +/- 0.07, P <= 0.05) and postweaning growth till the age of 120 days (r(g) = -0.52 +/- 0.08, P <= 0.05). Significant genetic correlations were found between lamb temperament and growth rates during their first 3 months of age. As a result, selection for calm temperaments should translate to increased growth rates of lambs. Negative correlations between temperament and production traits, both in ewes and lambs, suggested that selection against animals that are highly reactive to improve welfare and ease of handling would not have detrimental impacts on productivity. (C) 2015 Elsevier Inc. All rights reserved.
机译：当前研究的目的是评估行为反应性对多珀羊（一种肉品种）的生产和繁殖性能的影响。在称重时使用5分评分系统主观评估动物的气质，在此过程中，绵羊花费了30秒的体重。气质的遗传力较低（0.10 + 0.03）。母羊气质和窝产仔数之间的表型（r（p））和遗传（r（g））相关性分别为负和可忽略不计（P> 0.05），分别为-0.06 +/- 0.18和-0.08 +/- 0.09。发现羔羊气质与断奶前生长率（r（g）= -0.44 +/- 0.07，P <= 0.05）和断奶后生长直至120天龄之间存在显着的遗传相关性（r（g）= -0.52 +/- 0.08，P <= 0.05）。在羔羊的气质与生长的前三个月之间的增长率之间存在显着的遗传相关性。结果，选择镇定的气质应转化为提高羔羊的生长速度。在母羊和羔羊中，气质和生产性状之间呈负相关，这表明选择对动物具有高反应性以改善福利和易于处理的动物不会对生产率产生不利影响。 （C）2015 Elsevier Inc.保留所有权利。

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