The effect of physical form of the rations on the performance and yield of cuts of the carcass of two lineages of broilers (Cobb and Ross) was evaluated. The treatments were defined according to the lineages and physical form of the rations and were given mash ad libitum, pelleted ad libitum, and restricted pelleted (with equal intake of the given mash ration). In the trial, 900-day-old broilers were raised in experimental poultry house from 1 to 45 days of age. To evaluate the performance, the statistical design was the complete randomized with 3 x 2 (three diets and two lines) factorial arrangement with five repetitions, being 30 birds in each repetition. To evaluate the carcass and yield of cuts, the statistical design was the same, with 30 birds for each treatment, being each bird considered one repetition. The restricted pelleted ration reduced the weight of gain in 4.7% and enhanced the viability of the lineage Cobb in 10%. Independently of the lineage, better weight of gain were observed in birds fed pelleted rations ad libitum. The restriction of the pelleted ration enhanced the feed conversion in 2%. The lineage did not influence the yield of cuts and percentage of digestive organs evaluated. The pelletization enhances the performance of broilers.
broiler; live; pelleted; performance; yield of cuts
