Abstract

{Impact of weight recovery on transcriptome and meat phenotypes of adult Nellore cows G.M. Souza1,2, S. de las Heras-Saldana2, C. Gondro2, 3, A.L.J. Ferraz4, G.L.D. Feijó5, E.F Delgado 1 1Higher School of Agriculture Luiz de Queiroz, University of São Paulo, Piracicaba, SP, Brazil giancarlomoura@usp.br (Corresponding Author) 2School of Environmental and Rural Science, University of New England, Armidale, NSW Australia 3College of Agriculture and Natural Resources, Michigan State University, MI, USA 4State University of Mato Grosso do Sul, Aquidauana, MS, Brazil 5National Center for Research in Beef Cattle, Brazilian Agricultural Research Company (Embrapa), Campo Grande, MS, Brazil The speed of renewal of muscle proteins defines muscle growth, and can affect meat quality, as well as collagen turnover and proteolytic rate. There is little information in the literature about changes in the muscle protein remodeling process in response to the rate of recovery of weight gain after malnutrition in adult animals. The use of RNA sequencing may indicate changes in muscle tissue through a differential expression profile that explains changes in phenotypes associated with muscle growth. Therefore, the objective of this study was to evaluate changes in the transcriptome associated with phenotypes of meat of Nellore adult cows submitted to different rates of weight recovery. In this experiment, 28 adult cows aged 5 to 16 years were randomized into 4 groups: T1-Control animals (slaughtered with low body score

Giancarlo de Moura Souza, Sara de las Heras-Saldana, Cedric Gondro, André Luiz Julie Ferraz, Gelson Luis Dias Feijó, Eduardo Francisqui Delgado

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume Electronic Poster Session - Biology - Growth and Development, , 867, 2018
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