Expected consequences of including methane footprint into the breeding goals in beef cattle. A Spanish Blonde d'Aquitaine population as a case of study

Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie
Javier López-ParedesOscar González-Recio

Abstract

This study evaluates two potential scenarios for including methane (CH4 ) emissions in the breeding objectives of beef cattle, using the Spanish population of Blonde d'Aquitaine as a case of study. First, CH4 emissions were included as a cost using a shadow carbon price of 1.22€/CH4 kg (0.044€/CO2 kg) (carbon tax scenario). In the other scenario, a CH4 quota was applied, optimizing emissions per unit of product. The current production system was used as benchmark scenario (Scenario 1). The economic value of CH4 was calculated under all scenarios using a bioeconomic model that translated the production system into a mathematical function. Then, CH4 emissions were included with proper relative weight in the selection index under each scenario. The economic value of CH4 production from cows was -0.54€/year and -0.16€/year in a carbon tax and in a CH4 quota scenario, respectively. Economic values for CH4 production from fattening calves were -1.22€/year and -0.34€/year in a carbon tax and a quota scenario, respectively. The relative weights of total CH4 traits in the indices were 4.9% and 1.8% in a carbon tax and quota scenario. The carbon tax scenario led to smaller cows (-7.59 kg of mature weight) and a decrease in carcass weight...Continue Reading

References

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Jul 12, 2017·Animal : an International Journal of Animal Bioscience·P R AmerA R Cromie
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