Nutritional strategies for alleviating the detrimental effects of heat stress in dairy cows: a review
文献类型: 外文期刊
作者: Min, Li 1 ; Li, Dagang 1 ; Tong, Xiong 1 ; Nan, Xuemei 3 ; Ding, Diyun 1 ; Xu, Bin 1 ; Wang, Gang 1 ;
作者机构: 1.Guangdong Acad Agr Sci, Inst Anim Sci, State Key Lab Livestock & Poultry Breeding, Guangzhou 510640, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Inst Anim Sci, Guangdong Key Lab Anim Breeding & Nutr, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr, Beijing 100193, Peoples R China
关键词: Heat stress; Dairy cows; Nutritional strategies; Improvement
期刊名称:INTERNATIONAL JOURNAL OF BIOMETEOROLOGY ( 影响因子:3.787; 五年影响因子:3.811 )
ISSN: 0020-7128
年卷期: 2019 年 63 卷 9 期
页码:
收录情况: SCI
摘要: Heat stress responses negatively impact production performance, milk quality, body temperature, and other parameters in dairy cows. As global warming continues unabated, heat stress in dairy cows is likely to become more widespread in the future. To address this challenge, researchers have evaluated a number of potentially available nutritional strategies, including dietary fat, dietary fiber, dietary microbial additives, minerals, vitamins, metal ion buffer, plant extracts, and other anti-stress additives. In this paper, we discuss the evidence for the efficacy of these nutritional strategies aimed at alleviating the detrimental effects of heat stress in dairy cows. It was comprised of the treatment (dosage and usage), animal information (lactation stage and number of dairy cows), THI value (level of heat stress), duration of exposure, the changes of feed intake and milk yield (production performance), the changes of milk protein and milk fat (milk quality), the changes of rectal temperature and respiration rate (body temperature), other indices, and reference resources. The results of these studies are presented with statistical justification in the tables. In total, the 49 kinds of dietary interventions derived from these eight types of nutritional strategies may provide an appropriate means of mitigating heat stress on a particular dairy farm based on the explanation of the results.
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