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Expression of genes and proteins related to meat quality in Bos indicus cattle


Brazil has a herd of more than 150 million of Nellore (Bos indicus) cattle (about 72%), which despite being adapted to the Brazilian management conditions, present lower meat quality when compared to Bos taurus. In the international meat market, there is a trend towards the valorization of differentiated meat products in terms of meat organoleptic properties and concerns about the consequences of its consumption on human health. In spite of this, meat quality traits have not been considered in the genetic evaluation programs due to high cost and difficulty of measurement. As an alternative, the knowledge of the mechanisms of genetic action involved in these processes can help in the identification of animals with high genetic value for characteristics related to meat quality, and selection can be conducted in young animals, making possible the inclusion of meat quality traits in animal breeding programs. Thus, the objective of this work is to study genes and proteins related to meat quality through real time quantitative PCR and mass spectrometry techniques, respectively. The knowledge acquired through these studies could generate important tools for the development of strategies aiming to improve meat organoleptic traits. (AU)

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