文献类型： 外文期刊
作者： Guo, Zhenhua 1 ; Lv, Lei 3 ; Liu, Di 1 ; Fu, Bo 1 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Anim Husb Res Inst, Key Lab Combining Farming & Anim Husb, Minist Agr & Rural Affairs, 368 Xuefu Rd, Harbin 150086, Heilongjiang, Peoples R China
2.HAAS, Postdoctoral Programme, Anim Husb Res Inst, 368 Xuefu Rd, Harbin 150086, Heilongjiang, Peoples R China
3.Heilongjiang Acad Forestry, Wood Sci Res Inst, 134 Haping Rd, Harbin 150080, Heilongjiang, Peoples R China
关键词： Heat stress; Litter; Meta-analysis; Pig
期刊名称：TROPICAL ANIMAL HEALTH AND PRODUCTION （ 影响因子：1.559； 五年影响因子：1.681 ）
ISSN： 0049-4747
年卷期： 2018 年 50 卷 6 期
页码：
收录情况： SCI
摘要： Heat stress is problematic for pigs raised in tropical environments. The animal is large and has proportionally high body heat, and subcutaneous fat thickness reduces the animal's ability to thermoregulate. It is not clear how stress affects pig litter size. For this reason, we performed a meta-analysis of the effect of heat stress on pig litter size. We reviewed behavioral, endocrine, and cellular data and the signaling pathways involved in heat stress. We found that heat stress did not affect litter size or the body weight of offspring. However, heat stress was found to decrease litter body weight gain due to reductions in sow milk production. For this reason, artificial feeding of piglets may be appropriate.
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