Data/hora: 23/09/2024 13:06:24

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	22/01/2016	
Data da última atualização: 	03/03/2016	
Autoria: 	SANTOS, L. H. dos; LOBO, A. M. B. O.; FACO, O.; GONÇALVES, H. C.; LOBO, R. N. B.	
Afiliação: 	Leonardo Hunaldo dos Santos, Federal University of Ceará (UFC) - Fortaleza, CE, Brazil; Federal University of Maranhão - Campus Imperatriz, Brazil; ANA MARIA BEZERRA OLIVEIRA LOBO, CNPC; OLIVARDO FACO, CNPC; Heraldo Cesar Gonçalves, UNESP - Brazil; RAIMUNDO NONATO BRAGA LOBO, CNPC.	
Título: 	Breeding programs for dairy goats generate profits in Brazil.	
Ano de publicação: 	2015	
Fonte/Imprenta: 	Livestock Science, Amsterdam, v. 178, p. 27-34, 2015.	
DOI: 	doi:10.1016/j.livsci.2015.05.032	
Idioma: 	Inglês	
Conteúdo: 	Abstract: This work aims to evaluate the economic feasibility of a breeding program for dairy goats in developing countries. A traditional scheme was compared with a scheme using a progeny test. In the traditional scheme, farm records are used and the selection of bucks is based on reproduction and milk yield of their dams, while the selection of does is based on their own performance and on their dam's performance. Analyses were performed using the ZPLAN software, which uses a deterministic approach to estimate genetic and economic gains in breeding programs. The traditional selection scheme showed no economic viability and did not cover the costs for maintenance of the breeding program. The scheme using progeny tests of young bucks was viable, with considerable genetic profits for the objectives of selection and individual traits. The economic returns of this program exceeded its costs, with a return on investment of approximately 3%. In this scheme, somatic cell count was the trait with the largest economic impact, followed by milk yield. The intensity of use of young bucks in progeny testing should not exceed 10%. Above this value, no substantial monetary gains were obtained for the objective of selection, besides the reduction of the net present value of the breeding program.	
Palavras-Chave: 	Contagem de células somáticas; Economic evaluation; Ganho genético; Genetic gain; Net present value; Valor presente líquido; Viabilidade económica.	
Thesagro: 	Análise econômica; Cabra leiteira; Caprino; Seleção genética; Teste de progênie.	
Thesaurus Nal: 	Economic analysis; Progeny testing; Selection criteria; Somatic cell count.	
Categoria do assunto: 	G Melhoramento Genético	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
Exemplares: 	CNPC - (29844-1) - UPC - AP - DD -  -  -  - DIS