Título:	Genetic and phenotypic parameters for feed and water efficiency in Senepol cattle.
Autoria:	MENEZES, G. R. de O. GOMES, R. da C. RIBAS, M. N. TORRES JUNIOR, R. A. de A. FERNANDES JUNIOR, J. A. PEREIRA, G. M. FAVERO, R. SILVA, L. O. C. da
Afiliação:	GILBERTO ROMEIRO DE OLIVEIRA MENEZE, CNPGC; RODRIGO DA COSTA GOMES, CNPGC; Intergado Ltd; ROBERTO AUGUSTO DE A TORRES JUNIOR, CNPGC; Grama Senepol; Universidade Católica Dom Bosco - UCDB; Universidade Estadual de Londrian - UEL; LUIZ OTAVIO CAMPOS DA SILVA, CNPGC.
Ano de publicação:	2018
Referência:	In: BRYANT, J.; BURKE, M.; COOK, R.; HARRIS, B; MOSCONI, C.; WICKHAM, B. (Ed.). Cooperation, networking and global interactions in the animal production sector. Rome, Italy: ICAR
Conteúdo:	The sustainability of beef production in the world demands the identification and selection of efficient animals that can produce more products with fewer inputs. Feed accounts for around 50-70% of variable costs of beef cattle systems, depending on the level of intensification adopted. Water has been traditionally considered an inexpensive, readily available, and renewable natural resource. However, growing concerns about the availability of drinkable water have increasingly pushed pressure on livestock production, especially cattle. Thus, genetic and phenotypic parameters were estimated for feed and water efficiency in Senepol cattle in order to evaluate their use as selection criteria. Records on 587 Senepol heifers, involved in performance tests, were used. Traits studied included residual feed intake (RFI), residual water intake (RWI), average daily feed intake (ADFI), average daily water intake (ADWI) and average daily gain (ADG). Individual daily feed and water intake records were collected over a 70-day period, using electronic feed and water bunks developed by Intergado Ltd. The ADG was calculated dividing the total weight gained during the test by its duration. A linear regression model of ADFI on metabolic weight (mean weight 0.75 ) and ADG was fitted, within each test edition. RFI was calculated as ADFI minus that predicted using the regression equation. The same was performed for calculating RWI by using ADWI instead of ADFI in the linear regression model.
NAL Thesaurus:	Beef Correlation Heritability
Palavras-chave:	Residual feed intake Residual water intake Selection
Série:	(ICAR Technical Series, 23)
Notas:	Proceedings of the ICAR Conference held in Auckland, NZ, 10-11 February 2018.
Tipo do material:	Artigo em anais e proceedings
Acesso:	openAccess
Aparece nas coleções:	Artigo em anais de congresso (CNPGC)