Evaluation of commercial joint, body components and internal organs of confined lambs and fed with swine wastes

Twenty-one lambs were used, nine of the Bergamacia and 12 Santa Ines breed, were confined individually for 75 days, and fed diets containing 24% of swine wastes, in the form of biju (obtained by the scratching and sweeping of the floor of the growth and termination stalls) or DSW - dry sifted wastes (constituted by the solid part of the material contained of the water of wash of the stalls, obtained through sieves of fine mesh). There was no diet effect in the percentage of muscle, fat and bone of the analyzed cuts. The Santa Ines lambs showed larger amount of muscle in the ham and a larger loin eye area that Bergamacia; these however showed a larger fat proportion in the whole shoulder when the joints were expressed in % of the weight of each joint. The diet controls also propitiated one larger loin eye area that the diet with biju. A larger proportion of small intestine, expressed in % weight of the digestive system, was verified in the animals fed with the diets controls in relation those fed whit DPS. The lambs of the Santa Ines breed showed larger weight of the windpipe, when this parameter was expressed in kg and in % of the empty weight; already the Bergamacia presented larger amount of skin, when this was expressed as % of the empty weight. It is concluded that the use of swine wastes doesn't affect the composition of the commercial joints, weights of body components and internal organs.