干旱区生态环境知识资源中心(Arid): Meta-analysis and meta-regression of core body temperature in taurine and zebuine cattle under different environmental conditions

Arid

DOI	10.1016/j.livsci.2022.105104
	Meta-analysis and meta-regression of core body temperature in taurine and zebuine cattle under different environmental conditions
	Pires, Bianca Vilela; Freitas, Ana Claudia; Klein, John Lenon; de Melo, Thaise Pinto; Stafuzza, Nedenia Bonvino; Paro de Paz, Claudia Cristina
通讯作者	Pires, BV
来源期刊	LIVESTOCK SCIENCE
ISSN	1871-1413
EISSN	1878-0490
出版年	2022
卷号	265
英文摘要	Heat stress affects livestock productivity and is often determined by an increase in the core body temperature (CBT). To evaluate the latter, both vaginal and rectal temperatures can be used. The aims of this study were (1) to perform a meta-analysis in order to evaluate the impact of heat stress in comparison to thermoneutral conditions on CBT in Bos taurus and Bos taurus indicus cattle, and (2) to evaluate the effects of genetic group, sex, productive purpose, climate zone, and temperature-humidity index (THI class) heat stress on the vaginal and rectal tem-peratures of cattle. Eighty-nine studies were included in this meta-analysis. Systematic review and meta-analysis were performed following the PRISMA guidelines. The standardized mean difference (SMD) in CBT between the heat stress (HS) and thermoneutral (TN) environments was used as a measure of effect size, considering a 95% confidence interval (CI). Cochran's Q test and I2 statistic indicated high variability among studies; thus, a random effects model was used. Subgroup and meta-regression analysis were performed to investigate the source of heterogeneity. Genetic group, sex, productive purpose, climate zone, and THI class were included as covariates. The SMD in CBT between the HS and TN environments was 7.45 degrees C (95%CI: 5.89;9.02 degrees C, P = 0.0001), indi-cating a physiological response to the heat stress condition. The SMD in CBT was 3.92 degrees C higher in Bos taurus than Bos taurus indicus animals (P < 0.05). Animals in climate zone D (warm temperate zone) showed a lower SMD in CBT than those in climate zone B (arid zone) (SMD = 4.04 degrees C vs 12.38 degrees C). The THI class affected the SMD in CBT (P < 0.05). The genetic group, climate zone, THI class and interaction between genetic group and climate zone explained 29.89% of the heterogeneity observed among studies. In conclusion, heat stress exposure affects the vaginal and rectal temperatures of cattle. The CBT measured by rectal and vaginal temperatures can be used to detect heat stress-induced changes in CBT. Bos taurus and Bos taurus indicus animals seem to respond differ-ently to heat stress in terms of CBT.
英文关键词	Bos taurus Bos taurus indicus Climatic conditions Rectal temperature Vaginal temperature Thermotolerance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000880163500004
WOS关键词	HEAT-STRESS ; BOS-TAURUS ; RESILIENCE ; TOLERANCE ; RESPONSES ; LIVESTOCK ; BIAS ; COWS
WOS类目	Agriculture, Dairy & Animal Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393757
推荐引用方式 GB/T 7714	Pires, Bianca Vilela,Freitas, Ana Claudia,Klein, John Lenon,et al. Meta-analysis and meta-regression of core body temperature in taurine and zebuine cattle under different environmental conditions[J],2022,265.
APA	Pires, Bianca Vilela,Freitas, Ana Claudia,Klein, John Lenon,de Melo, Thaise Pinto,Stafuzza, Nedenia Bonvino,&Paro de Paz, Claudia Cristina.(2022).Meta-analysis and meta-regression of core body temperature in taurine and zebuine cattle under different environmental conditions.LIVESTOCK SCIENCE,265.
MLA	Pires, Bianca Vilela,et al."Meta-analysis and meta-regression of core body temperature in taurine and zebuine cattle under different environmental conditions".LIVESTOCK SCIENCE 265(2022).