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A bio-economic model was developed to calculate costs and revenues to obtain economic values (EV) for performance traits of beef cattle in production systems in Brazil. Performance records, economic and biologic parameters were obtained from a Nelore breeding herd. Two production systems: complete breeding cycle (CbcR) and cow-calf (CC) were simulated using a deterministic and static model. Costs, revenues and the annual profits were calculated using Excel ( (R) ) to obtain the economic values for w

Jorge Junior, J.; Cardoso, V.L.; de Albuquerque, L.G.

Revista Brasileira de Zootecnia-Brazilian Journal of Animal Science 35(5): 2187-2196

2006


ISSN/ISBN: 1806-9290
DOI: 10.1590/s1516-35982006000700040
Accession: 066199828

A bio-economic model was developed to calculate costs and revenues to obtain economic values (EV) for performance traits of beef cattle in production systems in Brazil. Performance records, economic and biologic parameters were obtained from a Nelore breeding herd. Two production systems: complete breeding cycle (CbcR) and cow-calf(CC) were simulated using a deterministic and static model. Costs, revenues and the annual profits were calculated using Excel((R)) to obtain the economic values for weaning weight (WW), mature weight (WW), pregnancy rate (PR) and weaning late (WR) in both systems. The impact of changes in genetic level of tiaits on annual profits of the production systems were evaluated by increasing the original values of the traits by 1%. This increase resulted in positive changes on profits and the greatest impact was for WR in both systems. EV for MV, MW, PR. WR in CbcR and Cc systems were respectively R$ 0.40/kg, R$ 0.09/kg, R$ 3.20/1%: R$ 10.15/kg and R$ 1.31/kg, R$ 0.09/kg, R$ 2.41/1% and R$ 3.36/1%. The bio-economic model satisfactorily described the beef cattle production systems and can be adapted to other production circumstances.

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