Genetic selection has been the primary approach to change body composition for many years. As knowledge of bioregulation of animal growth continues to unfold, selection will be directed toward specific genes and proteins that impact growth of muscle and fat. Additionally, selection may be directed toward factors that control regulation of cell differentiation or specific metabolic pathways. Molecular biology technology continues to reveal additional potential targets for genetic selection, pharmacological intervention or specific immunization to enhance or diminish a function. In the future, there will be an abundance of new targets to explore, as well as some not yet conceived.
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