Abstract

COSTA, R.G. et al. Using different methodologies to determination the loin eye area in sheep. Arch. zootec. [online]. 2012, vol.61, n.236, pp.615-618. ISSN 1885-4494.  https://dx.doi.org/10.4321/S0004-05922012000400014.

The accuracy of the methodologies: UNESP-Grade, Grade, Geometric, compared to AutoCad, in determining of the area rib eye-AOL was studied. Forty Santa Inês intact male lambs with different body weights were used. Left half carcasses were conducted a cross-sectional at the level of 13^th rib and the first lumbar vertebra, for measuring AOL, by tracing the outline of muscle on plastic sheet of transparency and appropriate pen. We performed a quantitative analysis of the model accuracy using mean absolute percentage error, to measure the deviations. The lesser deviation was observed for Grade-UNESP, followed by the Grade and Geometric. Grade-UNESP method proved to be the more accurate compared to AutoCad, economically viable and applicable in the slaughter program, it was the most recommended for lamb carcass.

Keywords : AutoCad; Carcass; Longissimus dorsi; Sheep meat.

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