Heifers forage intake and performance on Brachiaria decumbens after supplementation

Abstract

The objective of this trial was to characterize heifers performance after a supplementation period at the coastal region of Pernambuco State, Brazil. The protein source to the proteic supplementation was cotton seed meal and the proteic/energetic supplementation was a mix of 50% cotton seed meal and 50% ground corn. Eighteen 5/8 Holstein/Zebu heifers were used, with an average liveweight of 267.33 kg and averaging 20 months of age. Previous supplementation did not influence initial liveweight, final liveweight, average daily gain and pregnancy rate of the evaluated heifers, which presented average values of 267.33 kg, 335.33 kg, 345.81 g and 33.22%, respectively. Dry matter intake was influenced by the previous supplementation and the higher intake level occurred for the control treatment as well as for the energetic/proteic supplementation treatment, decreasing along grazing periods.