Data/hora: 17/06/2024 18:25:08

Biblioteca(s): 	Embrapa Gado de Leite.	
Data corrente: 	11/08/2021	
Data da última atualização: 	19/08/2021	
Autoria: 	RIBEIRO, L. dos S.; BRANDÃO, F. Z.; CARVALHEIRA, L. de R.; LEMOS, D. R. de; SOUZA, G. T. de; BATISTA, R. I. T. P.; CAMARGO, L. S. de A.; CARVALHO, B. C. de.	
Afiliação: 	LILIAN DOS SANTOS RIBEIRO, Universidade Federal Fluminense; FELIPE ZANDONADI BRANDÃO, Universidade Federal Fluminense; LUCIANO DE REZENDE CARVALHEIRA, Universidade Federal de Minas Gerais; DIANA RANGEL DE LEMOS, Universidade Federal de Viçosa; GUSTAVO TORRES DE SOUZA, Universidade Federal de Juiz de Fora; RIBRIO IVAN TAVARES PEREIRA BATISTA, Universidade Federal Fluminense; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; BRUNO CAMPOS DE CARVALHO, CNPGL.	
Título: 	Chromium supplementation modulates glucose metabolism in heatstressed Girolando dairy cows.	
Ano de publicação: 	2020	
Fonte/Imprenta: 	Semina: Ciências Agrárias, v. 41, n. 5, p. 2445-2452, 2020.	
DOI: 	https://doi.org/10.5433/1679-0359.2020v41n5Supl1p2445	
Idioma: 	Inglês	
Notas: 	Short communications.	
Conteúdo: 	The objective of this study was to evaluate the effects of dietary chromium supplementation on hepatic gene expression of lactating Girolando (Holstein x Gyr) cows under heat stress conditions in climatic chamber. Thirty-six ¾ Holstein x Gyr lactating cows were used, based on a 2x3 factorial scheme, to evaluate the effects of two diets (0 vs 0.50 mg of organic chromium kg-1 dry matter) and three environmental conditions (ECs): heat stress conditions in climatic chamber with ad libitum feeding (HS), a thermoneutral environment with ad libitum feeding (TN), and a pair-fed group in a thermoneutral environment (PF). Under HS group, the expression levels of glucose transporter 2 (GLUT2), glucose-6-phosphatase (G6Pase), and growth hormone receptor (rGH) were downregulated (P < 0.05) in chromium-supplemented cows compared to those in cows fed the control diet. GLUT2 expression was upregulated (P = 0.02) in the HS group and insulin-like growth factor 1 (IGF1) was downregulated (P < 0.01) in the PF group in cows fed the control diet compared to the expression in the TN group. No differences were observed between the ECs in terms of relative abundances of GLUT2, phosphoenolpyruvate carboxykinase (PEPCK), G6Pase, rGH, and IGF1 transcripts among the chromium-supplemented cows (P > 0.05). Heat stress caused changes in the expression of genes related to glucose metabolism, and organic chromium could modulate glucose metabolism in animals under heat stress conditions to some extent.	
Palavras-Chave: 	Biópsia hepática; Crossbred cows; Glucose metabolism; Liver biopsy.	
Thesagro: 	Gado Leiteiro; Gado Mestiço; Glicose; Metabolismo.	
Thesaurus Nal: 	Dairy cattle.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CNPGL - (25177-1) - UPC - AP - DD -  -  -  - DIS