Resumo

RODRIGUEZ-VALENZUELA, Enmanuel et al. Prediction of carcass energy content of Pelibuey ewes by ultrasound measurements. Ecosistemas y recur. agropecuarios [online]. 2017, vol.4, n.12, pp.543-548. ISSN 2007-901X.  https://doi.org/10.19136/era.a4n12.1226.

The aim of this study was to evalúate the relationship between body ultrasound measurements (USM) and carcass energy content (CEC) of Pelibuey ewes. USM were taken 24 h before slaughter in twenty-two ewes. Fat thickness (FT) and Longissimus dorsi area (LDA) were determined in the thoracic (TFT and TLDA) and lumbar región (LFT and LLDA). CEC was considered as the sum of the energy of muscle and adipose tissues in the carcass. The correlation coefficient (r) between body weight (BW) and CEC was 0.89 (p < 0.001). Nonetheless, correlations for LDA and CEC were not significant (p > 0.05). The r2 for equation including BW and LFT was 0.87 (RSD= 15.34). The inclusión of LFT improved the prediction by about 8 %. The use of some USM in combination with BW provides good CEC estimates in Pelibuey ewes.

Palavras-chave : Body condition; ultrasound; carcass energy.

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