Data/hora: 01/06/2024 01:19:03

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 19/11/2015
Data da última atualização: | 25/05/2017
Autoria: | CARVALHO, C. V. D.; BITTENCOURT, T. C. C. de.
Afiliação: | CAIO VICTOR DAMASCENO CARVALHO, UFBA; THEREZA CRISTINA CALMON DE BITTENCOURT, UFBA.
Título: | Breeding objective for a Nellore cattle rearing system.
Ano de publicação: | 2015
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 50, n. 9, p. 814-820, set. 2015.
Idioma: | Inglês
Notas: | Título em português: Objetivos do melhoramento para um sistema de cria de bovinos Nelore.
Conteúdo: | The objective of this work was to define the traits that should be included as breeding objectives for Nellore cattle, according to simulations with a bio?economic model for rearing systems. The economic values (EVs) of the traits were calculated as the differences between the profits due to an increased performance of 1% in each trait, with the others traits remaining constant. To determine the impact of each selection on the revenue system, two scenarios were simulated based on the traits being selected. In the first scenario, the adopted selection criteria were: weaning weight (WW), weaning rate (WR), yearling weight (YW), and mature cow weight (MCW). In the second scenario, the cumulative productivity (CP) of dams was used as an indirect evaluation of the performance of calves, with all the other traits included, except WW. In the first scenario, an EV of R$ 1.44 kg?1 was obtained for WW. In the second scenario, an EV of R$ 2.91 kg?1 was obtained for CP. The trait with the highest EV in both scenarios was WR, which enhanced the profits by R$ 3.21 for each 1% increased performance. The meat price paid to the producer is the factor with the greatest impact on the EVs of all examined traits.
Palavras-Chave: | Bio-economic model; Flutuação de mercado; Market fluctuation; Valor econômico.
Thesagro: | Gado de corte.
Thesaurus Nal: | Beef cattle; Economic valuation; Selection criteria.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/133475/1/Breeding-objectives.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (58447-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS