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| 热应激对绵羊行为及生理的影响 |
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李富宽1,2, 杨燕3, 王慧2, 吕慎金2, 魏万红1
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| (1.扬州大学 生物科学与技术学院, 江苏 扬州 225009;2.临沂大学 农林科学学院, 山东 临沂 276000;3.临沂市农科院, 山东 临沂 276012) |
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| 摘要: |
| 绵羊属恒温动物，为保证健康、生存及繁殖需要，其体温通常保持在一个较窄的生理范围。一般条件下绵羊会通过自身的散热和产热两种途径来缓冲热应激并维持自身热平衡。这种热平衡调节机制受下丘脑调控，同时，热应激会增加机体内热并影响热交换的调控，进而影响家畜的行为及生理机能，并导致体重、平均日增重降低，严重时可影响到家畜健康与繁殖。但这种影响会因品种、饲养方式及个体的不同而有所不同。 |
| 关键词: 绵羊 热应激 体温调控 行为 生理 |
| DOI：10.11841/j.issn.1007-4333.2018.02.06 |
| 投稿时间：2017-01-18 |
| 基金项目:国家自然科学基金项目（31572448）；2017年家养动物种质资源平台运行服务项目；山东省现代农业产业技术体系羊产业创新团队临沂综合试验站（SDAIT-10-14） |
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| Effect of heat stress on the behavior and physiology of sheep |
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LI Fukuan1,2, YANG Yan3, WANG Hui2, LV Shenjin2, WEI Wanhong1
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| (1.College of Bio-Science & Bio-Technology, Yangzhou University, Yangzhou 225009, China;2.College of Agriculture and Forestry Science, Linyi University, Linyi 276000, China;3.Linyi Academy of Agricultural Sciences, Linyi 276012, China) |
| Abstract: |
| Sheep belong to warm-blooded animals and their body temperature usually remain in a relative narrow physiological range to ensure the need of health,survival and reproduction.In general,the sheep can tolerance heat stress and keep their thermal equilibrium state by maintaining the balance of heat production and dissipation.The mechanism of heat adjustment in sheep is regulated by hypothalamus.Heat stress can increase body's internal heat,affect the control of heat exchange and then affect the behavior and physiology of sheep resulting in the decrease of body weight and average daily gain and affecting the health and reproduction of livestock.These effects are influenced by the breeds of sheep,the feeding model and individual variation.The effects of heat stress on the behavior and physiology of sheep were reviewed in this paper in order to provide references to reduce thermal stress damage,improve animal welfare and increase production. |
| Key words: sheep heat stress temperature control behavior physiology |
