The environmental impact of beef production in the United States: 1977 compared with 2007.

@article{Capper2011TheEI,
  title={The environmental impact of beef production in the United States: 1977 compared with 2007.},
  author={Judith L. Capper},
  journal={Journal of animal science},
  year={2011},
  volume={89 12},
  pages={
          4249-61
        }
}
Consumers often perceive that the modern beef production system has an environmental impact far greater than that of historical systems, with improved efficiency being achieved at the expense of greenhouse gas emissions. The objective of this study was to compare the environmental impact of modern (2007) US beef production with production practices characteristic of the US beef system in 1977. A deterministic model based on the metabolism and nutrient requirements of the beef population was… CONTINUE READING
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