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Breeding objectives of Brangus cattle in Brazil.
Simões, Michele R S; Leal, Joal J B; Minho, Alessandro P; Gomes, Cláudia C; MacNeil, Michael D; Costa, Rodrigo F; Junqueira, Vinícius S; Schmidt, Patrícia I; Cardoso, Fernando F; Boligon, Arione A; Yokoo, Marcos J.
Afiliação
  • Simões MRS; Postgraduate Program in Animal Husbandry - UFPEL, CAPES, Pelotas, Brazil.
  • Leal JJB; Embrapa South Livestock, Center of Livestock Research of South Brazilian Fields (CPPSul), Brazilian Agricultural Research Corporation, Ministry of Agriculture, Livestock and Food Supply, Bagé, Brazil.
  • Minho AP; Embrapa Southeast Livestock (CPPSE), Brazilian Agricultural Research Corporation, Ministry of Agriculture, Livestock and Food Supply, São Carlos, Brazil.
  • Gomes CC; Embrapa South Livestock, Center of Livestock Research of South Brazilian Fields (CPPSul), Brazilian Agricultural Research Corporation, Ministry of Agriculture, Livestock and Food Supply, Bagé, Brazil.
  • MacNeil MD; Delta G, Miles City, Montana.
  • Costa RF; Department of Animal, Wildlife and Grassland Sciences, University of the Free State, Bloemfontein, South Africa.
  • Junqueira VS; Postgraduate Program in Animal Husbandry - UFPEL, CAPES, Pelotas, Brazil.
  • Schmidt PI; Postgraduate Program in Genetics and Improvement by the Federal University of Viçosa, Viçosa, Brazil.
  • Cardoso FF; Animal Husbandry Department - UFPEL, Pelotas, Brazil.
  • Boligon AA; Embrapa South Livestock, Center of Livestock Research of South Brazilian Fields (CPPSul), Brazilian Agricultural Research Corporation, Ministry of Agriculture, Livestock and Food Supply, Bagé, Brazil.
  • Yokoo MJ; Animal Husbandry Department - UFPEL, Pelotas, Brazil.
J Anim Breed Genet ; 137(2): 177-188, 2020 Mar.
Article em En | MEDLINE | ID: mdl-31179593
Our goal was to define a breeding objective for Brangus beef cattle in Brazil. Bioeconomic models were produced and used to estimate economic values (EVs). The scenarios simulated were typical full-cycle beef production systems that are used in tropical and subtropical regions. The breeding objective contained pregnancy rate (PR), warm carcass weight (WCW), mature cow weight (MCW), number of nematode eggs per gram of faeces (EPG) and tick count (TICK). Two models were used in series to estimate the EV. A deterministic model was used to simulate effects of PR, WCW and MCW on profitability with a constant parasite load. Subsequently, stochastic models were used to estimate economic values for TICK and EPG as consequences of their environmental effects on weight gains, mortality and health costs. The EV of PR, WCW, MCW, EPG and TICK, was US$1.59, US$2.11, -US$0.24, -US$5.35 and -US$20.88, respectively. Results indicate positive emphasis should be placed on PR (12.49%) and WCW (65.07%) with negative emphasis on MCW (13.92%), EPG (2.77%) and TICK (5.75%). In comparison with the indexes usually used, these results suggest a reformulation in the selection indexes of the beef production system in tropical and subtropical regions in order to obtain greater profitability.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cruzamento / Bovinos Tipo de estudo: Health_economic_evaluation / Prognostic_studies Limite: Animals / Pregnancy País/Região como assunto: America do sul / Brasil Idioma: En Revista: J Anim Breed Genet Assunto da revista: GENETICA / MEDICINA VETERINARIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cruzamento / Bovinos Tipo de estudo: Health_economic_evaluation / Prognostic_studies Limite: Animals / Pregnancy País/Região como assunto: America do sul / Brasil Idioma: En Revista: J Anim Breed Genet Assunto da revista: GENETICA / MEDICINA VETERINARIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha