Dressing of cuts and non-carcass components of lambs fed diets containing different sources of vegetal oil

Sandra Mari Yamamoto Francisco de Assis Fonseca de Macedo Alexandre Agostinho Mexia Marilice Zundt Eduardo Shiguero Sakaguti Guilherme Bareia Liberato Rocha Kelly Cristina Telles Regaçoni Rosa Maria Gomes de Macedo About the authors

This work aimed to evaluate dressing of cuts and non-carcass components in Santa Inês and ½ Dorset ½ Santa Inês lambs fed with diets of different vegetal oil sources (soybean oil, canola oil and linseed oil) and a control diet (without vegetal oil). After slaughter there was the collection and weighing of the blood, skin, whole gastrointestinal tract (esophagus + stomachs + small and large intestines with their contents), empty gastrointestinal tract (esophagus + stomachs + small and large intestines previously emptied and cleaned), reproductive system + bladder, spleen, liver, heart, respiratory system with trachea, kidney with fat, head, feet and tail for determination of yield in relation of slaughter live weight. After 24 hours in cold chamber, chilled carcass was weighed and longitudinally ssplit, being the left side sectioned in seven anatomical parts: legs, chump, shoulder, fluctuant rips, real rips, bottoms and neck. The study of non-carcass components showed how the weights of skin (8.74%) and gastrointestinal tract (10.65%) are important in dressing determination. Cut percentages were not affected (p>0.05) by different diets and genetic groups evaluated in this study.

carcass; commercial cuts; organs

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