Data/hora: 24/09/2024 21:01:14

Biblioteca(s): 	Embrapa Gado de Leite.	
Data corrente: 	23/09/2021	
Data da última atualização: 	10/05/2022	
Autoria: 	GABBI, A. M.; KOLLING, G. J.; FISCHER, V.; PEREIRA, L. G. R.; TOMICH, T. R.; MACHADO, F. S.; CAMPOS, M. M.; SILVA, M. V. G. B.; CUNHA, C. S.; SANTOS, M. K. R.; PIMENTEL, C. M. M.	
Afiliação: 	ALEXANDRE M. GABBI, Universidade Federal do Rio Grande do Sul; GIOVANI J. KOLLING, Escola de Medicina Veterinária IMED; VIVIAN FISCHER, Universidade Federal do Rio Grande do Sul; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; THIERRY RIBEIRO TOMICH, CNPGL; FERNANDA SAMARINI MACHADO, CNPGL; MARIANA MAGALHAES CAMPOS, CNPGL; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; CAMILA S. CUNHA, Universidade Federal de Viçosa; MANOELA K. R. SANTOS, Universidade Federal de Santa Catarina; CONCEPTA M. MCMANUS PIMENTEL, Universidade de Brasília.	
Título: 	Use of infrared thermography to estimate enteric methane production in dairy heifers.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Quantitative InfraRed Thermography Journal, v. 19, n. 3, p. 187-195, 2022.	
DOI: 	https://doi.org/10.1080/17686733.2021.1882075	
Idioma: 	Inglês	
Notas: 	Publicado online em 10 fev. 2021.	
Conteúdo: 	The trial aimed to investigate the use of infrared thermography (IRT) to estimate enteric methane production in dairy heifers. The study lasted 5 days with 36 Gyr, Gyr x Holstein and Holstein heifers. The sulphur hexafluoride (SF6) tracer technique was used to estimate methane emission. Superficial body temperature was obtained with an infrared camera (FLIR® T300) on each side of the animals at 20- minute intervals during eight hours after the morning feeding. Data were analysed using Pearson?s correlation analysis and multivariate regression analysis, as well as two multivariate tests to investigate the relationship with methane emission. The analysis considered all the data together (total) and three subsets: initial (0?150 minutes), middle (150?300) and final period (300?442 minutes after feeding). Based on R2 and canonical correlations, the best predictive capacity of methane emission by IRT occurred in the initial and final periods after feeding. Infrared thermography may be a good estimator of methane emission using the SF6-tracer technique when considering the flanks? temperature.	
Palavras-Chave: 	Noninvasive measurements; Statistical tools.	
Thesagro: 	Efeito Estufa; Estatística; Gado; Gás.	
Thesaurus Nal: 	Cattle; Greenhouse gases.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CNPGL - (25361-1) - UPC - AP - DD -  -  -  - DIS