相关实验视频

Updated: Jan 6, 2026

Using Chronic Social Stress to Model Postpartum Depression in Lactating Rodents

Using Chronic Social Stress to Model Postpartum Depression in Lactating Rodents

Published on: June 10, 2013

使用皮质醇模式和与约克郡子生长和行为的关联来对断奶压力的弹性进行分类

Andrea M Luttman^1,2, Janice M Siegford², Nancy E Raney²

¹Genetics & Genome Sciences Program, Michigan State University, East Lansing, MI 48824.

Journal of animal science

|September 27, 2025

概括

与容易受到压力的猪相比,抗压的猪在断奶后体重增加有所改善. 这表明,抗压性更快地适应环境变化,尽管整体生长差异并不显著.

科学领域:

动物科学动物科学
动物生理学动物生理学
行为科学行为科学

背景情况:

猪肉行业的目标是通过弹性选择来培育更强壮的猪.
血清皮质醇已被确定为测量猪性的一种潜在代理物.
之前的研究表明,血清皮质醇在杂交的吉尔特犬中是有希望的.

研究的目的:

用血清皮质醇对断奶压力的反应来分类猪的弹性.
为了研究纯种约克郡子的生长和压力弹性 (SR) 和压力脆弱 (SV) 之间的行为差异.

主要方法:

根据奶时血清皮质醇反应从中选择SR和SV.
监测身体重量和计算不同生长阶段的平均每日增长.
评估皮肤病变和评估行为通过二次竞赛,操控测试和新型对象测试.

主要成果:

在SR和SV子之间没有观察到总体生长的显著差异.
在断奶后的第一个星期,SR子的每日体重增加大约是SV子的两倍 (152g/d与79g/d相比).
在早期生长结束时,SR的日益增长趋势较高,这表明它们更快地适应新环境.

结论:

血清皮质醇分类显示纯种约克郡的生长和行为的差异有限,与以前在杂交猪中的发现形成鲜明对比.
在断奶和过渡期后,SR子立即表现出更好的表现.
需要进一步的研究,以了解不同猪品种基于血清皮质醇的弹性分类的影响.

关键词:

约克郡的约克郡是什么意思应对应对应对猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪猪恢复力恢复力压力就是压力,压力就是压力.福利服务福利服务

更多相关视频

Using a Murine Model of Psychosocial Stress in Pregnancy as a Translationally Relevant Paradigm for Psychiatric Disorders in Mothers and Infants

Using a Murine Model of Psychosocial Stress in Pregnancy as a Translationally Relevant Paradigm for Psychiatric Disorders in Mothers and Infants

Published on: June 13, 2021

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

相关概念视频

Introduction to Stress and Lifestyle

Introduction to Stress and Lifestyle

Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...