干旱区生态环境知识资源中心(Arid): Impacts on two dairy breeds of adding a third (night) cooling event under extreme ambient heat

Arid

DOI	10.1007/s00484-021-02115-y
	Impacts on two dairy breeds of adding a third (night) cooling event under extreme ambient heat
	Avendano-Reyes, Leonel; Correa-Calderon, Abelardo; Macias-Cruz, Ulises; Garcia-Casillas, Arturo Cesar; Mellado, Miguel; Robinson, P. H.; Hernandez-Rivera, Juan Augusto
通讯作者	Hernandez-Rivera, JA (corresponding author), Univ Colima, Fac Med Vet & Zootecnia, Colima 28930, Mexico.
来源期刊	INTERNATIONAL JOURNAL OF BIOMETEOROLOGY
ISSN	0020-7128
EISSN	1432-1254
出版年	2021
英文摘要	Impacts of an additional cooling event during the night on physiological and productive parameters of two breeds (B) of dairy cows under severe heat stress conditions were determined. Fifteen Holstein (H) and 15 Jersey x Holstein (JxH) cows were assigned to one of the two cooling strategies (CS), where the difference was an added 1 h cooling event during the night (i.e., 3X and 4X cooling events) with the 4X group having the added night cooling event. Maximum and minimum average temperature/humidity indices during the study were 86 and 77 units, respectively. There were no CS x B interactions for any response variable. Body condition score (BCS) was similar between CS, but H cows had higher (P) condition than JxH. There were no differences in rectal temperature due to CS or B. Respiration rate between breeds and cooling strategies were similar throughout the day. However body surface temperatures of head, thurl, right flank, and udder were higher (P) in 3X versus 4X cows, and H cows maintained a higher (P < 0.05) temperature in thurl and right flank than JxH during PM hours. Metabolites and hormone concentrations were not affected by CS, but H cows had lower (P < 0.05) triiodothyronine and higher (P < 0.05) thyroxine, than JxH. The 4X cows had higher (P) milk yield and milk energy output than 3X cows. While H cows produced more milk than JxH, the latter had higher (P < 0.05) milk component levels. In general, JxH cows were judged to have to demonstrate a more desirable physiological response and milk composition outcome than H cows. An additional night cooling event was judged to result in more desirable physiological and productive responses than in cows without this extra night cooling event under the extremely hot and dry environmental conditions during the study.
英文关键词	Holstein cows Heat stress Milk production Jersey x Holstein cows Arid zone
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000630628800001
WOS类目	Biophysics ; Environmental Sciences ; Meteorology & Atmospheric Sciences ; Physiology
WOS研究方向	Biophysics ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Physiology
来源机构	University of California, Davis
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352236
作者单位	[Avendano-Reyes, Leonel; Correa-Calderon, Abelardo; Macias-Cruz, Ulises] Univ Autonoma Baja Calif, Inst Ciencias Agr, Valle De Mexicali 21705, Baja California, Mexico; [Garcia-Casillas, Arturo Cesar; Hernandez-Rivera, Juan Augusto] Univ Colima, Fac Med Vet & Zootecnia, Colima 28930, Mexico; [Mellado, Miguel] Univ Autonoma Agraria Antonio Narro, Dept Nutr Anim, Saltillo 25315, Coahuila, Mexico; [Robinson, P. H.] Univ Calif Davis, Dept Anim Sci, Davis, CA 95616 USA
推荐引用方式 GB/T 7714	Avendano-Reyes, Leonel,Correa-Calderon, Abelardo,Macias-Cruz, Ulises,et al. Impacts on two dairy breeds of adding a third (night) cooling event under extreme ambient heat[J]. University of California, Davis,2021.
APA	Avendano-Reyes, Leonel.,Correa-Calderon, Abelardo.,Macias-Cruz, Ulises.,Garcia-Casillas, Arturo Cesar.,Mellado, Miguel.,...&Hernandez-Rivera, Juan Augusto.(2021).Impacts on two dairy breeds of adding a third (night) cooling event under extreme ambient heat.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY.
MLA	Avendano-Reyes, Leonel,et al."Impacts on two dairy breeds of adding a third (night) cooling event under extreme ambient heat".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY (2021).