相关实验视频

Updated: Jun 9, 2025

Providing Meaningful Environmental Enrichment and Measuring Saliva Cortisol in Pigs Housed on Slatted Flooring

Providing Meaningful Environmental Enrichment and Measuring Saliva Cortisol in Pigs Housed on Slatted Flooring

Published on: September 30, 2019

对环境挑战的敏感性的遗传决定性利用三个猪系的每日料摄入记录

Tomasi Tusingwiire¹, Carolina Garcia-Baccino², Céline Carillier-Jacquin¹

¹GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet-Tolosan, France.

Journal of animal science

|October 26, 2024

概括

了解猪对环境敏感性的遗传基础是改善动物福利和生产率的关键. 这项研究发现,每日料摄入量 (DFI) 的变化可以预测环境挑战,其遗传性允许对弹性牲畜进行遗传选择.

科学领域:

动物遗传学和动物繁殖
畜牧生产系统畜牧生产系统
环境生理学环境生理学

背景情况:

环境挑战对猪福利和生产力产生重大影响.
动物的弹性,即抵御环境压力因素的能力,对于可持续农业至关重要.
识别环境敏感性的遗传基础对于有效的育种计划至关重要.

研究的目的:

用每日料摄入量 (DFI) 数据估计未记录的环境挑战的概率.
评估Landrace (LA),Large White (LW) 和Piétrain (PI) 猪系中环境敏感性的遗传决定性.
确定基因标记物,以提高动物对环境波动的抵御力.

主要方法:

使用混合模型根据DFI记录估计环境挑战的每日概率.
采用线性反应规范动物模型 (RNAM) 和标准动物模型来分析DFI数据.
使用平均信息限制最大概率 (AI-REML) 估计的 (共同) 差异组件.

主要成果:

在所有猪系中,在任何一天发生环境挑战的概率一般都很低 (LA:0.24,LW:0.10,PI:0.22).
在非压力和压力条件下DFI之间的遗传相关性因线而异,表明选择策略的差异性影响.
所有品种的高比例动物表现出弹性 (LA:75.0%,LW:74.2%,PI:72.2%).

结论:

每日料摄入量 (DFI) 的斜率是遗传的,并作为猪对环境敏感性的可靠指标.
基因选择可以有效地用于提高牲畜对环境挑战的抵抗力.
这些发现为开发在不同环境条件下提高动物福利和生产力的育种策略提供了基础.

关键词:

环境敏感性环境敏感性遗传相关性遗传相关性可能性概率概率概率.反应规范模型的反应规范模型.没有记录的挑战.

更多相关视频

Noninvasive, In-pen Approach Test for Laboratory-housed Pigs

Noninvasive, In-pen Approach Test for Laboratory-housed Pigs

Published on: June 5, 2019

Transition of Farm Pigs to Research Pigs using a Designated Checklist followed by Initiation of Clicker Training - a Refinement Initiative

Transition of Farm Pigs to Research Pigs using a Designated Checklist followed by Initiation of Clicker Training - a Refinement Initiative

Published on: August 21, 2021

相关概念视频

Background and Environment Affect Phenotype

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

Gene-Environment Interactions

Gene-Environment Interactions

Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...