干旱区生态环境知识资源中心(Arid): Physiological variables and estimates of heat exchange in sheep kept at thermoneutral and thermal stress temperatures

Arid

DOI	10.1016/j.smallrumres.2024.107320
	Physiological variables and estimates of heat exchange in sheep kept at thermoneutral and thermal stress temperatures
	Silva, Ricardo de Sousa; Furtado, Dermeval Araujo; Ribeiro, Neila Lidiany; Lopes Neto, Jose Pinheiro; Rodrigues, Raimundo Calixto Martins; de Oliveira, Airton Gonsalves; Silva, Jose Antonio Pires da Costa; da Silva, Maycon Rodrigues; Mascarenhas, Nagela Maria Henrique; Marques, Jordanio Inacio; de Morais, Fabiana Tereza Leal
通讯作者	Ribeiro, NL
来源期刊	SMALL RUMINANT RESEARCH
ISSN	0921-4488
EISSN	1879-0941
出版年	2024
卷号	237
英文摘要	The objective of the research was to quantify the levels of heat stress, physiological variables and losses of sensible and latent heat in sheep native to the Brazilian semi-arid region, kept in a climatic chamber at thermoneutral temperatures and heat stress. The experimental design was completely randomized with five temperatures and 24 sheep, with an average age of 5.0 +/- 1.0 months and an average weight of 15.0 +/- 2.3 kg. According to the heat stress index (HSI) at temperatures from 20.0 to 28.0 degrees C the environment was classified as comfortable, at a temperature of 32.0 degrees C, the environment was classified as mild to moderate discomfort, and at a temperature of 36.0 degrees C, it was classified as alert. With the increase in temperature, the animals significantly (P<0.05) increased rectal and superficial temperatures and respiratory rate and, in TNT, sensitive heat exchanges corresponded to an average of 55.9 % and in HST to 12.9 % of the total, and at a temperature of 32.0 degrees C, sensible heat exchanges corresponded to 17.9 % and latent heat exchanges corresponded to 82.1 % and, at a temperature of 36.0 degrees C, 95.8 % of heat exchanges were due to latent means, of which 85.1 % were cutaneous. Sheep kept in stressful thermal conditions increase their physiological variables and eliminate the majority of excess metabolic heat through latent means (skin and respiratory tract).
英文关键词	Phenotypic acclimatization Thermal insulation Ovis aries Integument
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001273561200001
WOS关键词	SANTA INES SHEEP ; THERMOREGULATORY RESPONSES ; GOATS ; ADAPTABILITY ; ADAPTATION
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/2XILL650/405633
推荐引用方式 GB/T 7714	Silva, Ricardo de Sousa,Furtado, Dermeval Araujo,Ribeiro, Neila Lidiany,et al. Physiological variables and estimates of heat exchange in sheep kept at thermoneutral and thermal stress temperatures[J],2024,237.
APA	Silva, Ricardo de Sousa.,Furtado, Dermeval Araujo.,Ribeiro, Neila Lidiany.,Lopes Neto, Jose Pinheiro.,Rodrigues, Raimundo Calixto Martins.,...&de Morais, Fabiana Tereza Leal.(2024).Physiological variables and estimates of heat exchange in sheep kept at thermoneutral and thermal stress temperatures.SMALL RUMINANT RESEARCH,237.
MLA	Silva, Ricardo de Sousa,et al."Physiological variables and estimates of heat exchange in sheep kept at thermoneutral and thermal stress temperatures".SMALL RUMINANT RESEARCH 237(2024).