Noble cuts, live weight components and visceral organs of dairy crossbreds bulls in grazing, restricted or ad libitum

Abstract

This work was carried out at the Experimental Station at Itambé-PE, with the objective to evaluate the cuts yield, and the development of the live weight components and visceral organs of dairy crossbreds bulls (5/8 Holstein/Gir) in grazing of Brachiaria decumbens, Stapf. Sixteen animals with an average age of 10 months and live weight of 180 kg were utilized. The animals were assigned in randomized blocks according to the live weight in each block with the following treatments “ad libitium” (unrestricted) grazing (AG), restricted grazing (RG) (four hours per day). The unrestricted grazing resulted in greater (P > 0.05) absolute weights (AW) (P < 0.05) for the noble cuts, however the cut yield in relation to the cold carcass was similar. The treatments had been similar for the AW of the liver and lungs, and for heart and kidneys in relation to final gain of empty body weight (%FGEBW). There were no differences (P > 0.05) to none of the compartments of the stomach and small intestine, however the internal fat was significant (P < 0.05) between the treatments in the three situations. The restriction to the grazing did not cause atrophy of the gastrointestinal tract.