Carcass characteristics, non-carcass components and meat quality of Nellore cattle in a feedlot and fed with different corn hybrids
Bonini Sestari, BrunaYurika Mizubuti, IvoneLuis de Azambuja Ribeiro, EdsonAurélio Alves de Freitas Barbosa, MarcoSales Pereira, ElzâniaPereira Pinto, AndréaEvans Cunha, Gianneda Costa Gomes, RodrigoLuiz Massaro Junior, FernandoPrado Rosolem, Carla
The objective of this study was to evaluate carcass characteristics, non-carcass components and meat quality of Nellore cattle in feedlot and fed with different corn hybrids (flint, semi-flint and semi-dent) in the diet. Twenty-seven animals averaging 350 ± 24 kg of body weight and 24 months of age were used. The animals were distributed in a completely randomized design with three treatments (T), where, T1- diet with flint corn (TDFC), T2- diet with semi-flint corn (TDSFC) and T3- diet with semi-dent corn (TDSDC), with 9 replicates per treatment. The animals were fed ad libitum twice daily (at 8:00 am and 4:00pm) with isocaloric and isonitrogenous diet, with 30% of sugar cane bagasse and 70% concentrate (88% maize, 8% soybean meal, 3% mineral and vitamin supplement and 1% urea) for 95 days (14 days of adaptation and 3 experimental periods of 27 days each). The animals were weighed at the beginning of the experiment and after each period of 27 days, always in a fasting period of 16 hours. At the end of the experiment, the animals were slaughtered in commercial slaughterhouse, measuring non-carcass components (weight of blood, feet, hide, head, tail, organs, fat removed for cleaning), gastrointestinal tract (pharynx, esophagus, stomach and intestines) and carcass characteristics (hot carcass, cold carcass yield, carcass length, leg length, thigh thickness, perimeter of leg, arm
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