干旱区生态环境知识资源中心(Arid): Biological responses of hair sheep to a permanent shade during a short heat stress exposure in an arid region

Arid

DOI	10.1016/j.smallrumres.2020.106146
	Biological responses of hair sheep to a permanent shade during a short heat stress exposure in an arid region
	Avendano-Reyes, Leonel; Macias-Cruz, Ulises; Correa-Calderon, Abelardo; Mellado, Miguel; Corrales, Jose L.; Corrales, Gonzalo; Ramirez-Bribiesca, Efren; Guerra-Liera, Juan E.
通讯作者	Macias-Cruz, U
来源期刊	SMALL RUMINANT RESEARCH
ISSN	0921-4488
EISSN	1879-0941
出版年	2020
卷号	189
英文摘要	Summer heat stress (HS) in warm climates decreases feedlot performance and, in extreme cases, causes death in fattening lambs. A traditional strategy to mitigate effects of HS has been the installation of galvanized sheet metal shades that partially or totally cover the corrals; however, the impact of total shading on thermoregulation and growth in hair lambs has been little studied. Twenty Dorper x Pelibuey ewe lambs were assigned to two treatments (n = 10; non-shaded vs. shaded) for two weeks to evaluate the effects of providing total shading with galvanized sheet metal in the fattening corral on physiological variables, blood analyte concentrations and growth performance under HS conditions in an arid region. Rectal temperature and respiratory rate in shaded ewe lambs were higher at 0600 h and lower at 1200 and 1800 h compared to non-shaded ewe lambs. Shaded ewe lambs had lower serum levels of glucose, cholesterol, triglycerides, K+ and Cl-, but higher serum urea levels, compared to non-shaded ewe lambs. Additionally, most of the mean values of hematological variables were higher in shaded ewe lambs versus non-shaded. Shaded ewe lambs had higher feed intake but similar growth rate and water intake than its counterpart. In conclusion, under summer HS conditions in an arid region, the thermoregulatory capacity of hair ewe lambs is improved during the daytime but compromised in the nighttime by completely shading the feedlots with galvanized sheet metal. Additionally, the lack of protection against solar radiation negatively affected feed intake and energy metabolism.
英文关键词	Ewes Hot weather Respiration rate Metabolites Electrolytes hair breed sheep
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000552125000007
WOS关键词	SUPPLEMENTATION ; WELFARE ; GROWTH
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/2XILL650/325193
作者单位	[Avendano-Reyes, Leonel; Macias-Cruz, Ulises; Correa-Calderon, Abelardo; Corrales, Jose L.; Corrales, Gonzalo] Univ Autonoma Baja California, Inst Ciencias Agr, Mexicali 21705, Baja California, Mexico; [Mellado, Miguel] Univ Autonoma Agr Antonio Narro, Dept Nutr Anim, Saltillo 25315, Coahuila, Mexico; [Ramirez-Bribiesca, Efren] Colegio Postgrad, Montecillos 56230, Estado De Mexic, Mexico; [Guerra-Liera, Juan E.] Univ Autonoma Sinaloa, Fac Agron, Culiacan De Rosales 80000, Sinaloa, Mexico
推荐引用方式 GB/T 7714	Avendano-Reyes, Leonel,Macias-Cruz, Ulises,Correa-Calderon, Abelardo,et al. Biological responses of hair sheep to a permanent shade during a short heat stress exposure in an arid region[J],2020,189.
APA	Avendano-Reyes, Leonel.,Macias-Cruz, Ulises.,Correa-Calderon, Abelardo.,Mellado, Miguel.,Corrales, Jose L..,...&Guerra-Liera, Juan E..(2020).Biological responses of hair sheep to a permanent shade during a short heat stress exposure in an arid region.SMALL RUMINANT RESEARCH,189.
MLA	Avendano-Reyes, Leonel,et al."Biological responses of hair sheep to a permanent shade during a short heat stress exposure in an arid region".SMALL RUMINANT RESEARCH 189(2020).