Paramêtros de fermentação ruminal de novilhos em consumo limitado, recebendo suplemento acrescido de óleo de copaíba (Copaifera sp.) em substuição e associação á monensina sódica

Abstract

The objective of this study was to evaluate the association of monensin with copaiba oil on ruminal parameters in supplements for cattle on feed restriction. Four bulls were used, castrated, with average body weight of 300 kg fitted with rumen cannula. The treatments were corn silage + supplement (CONT), corn silage + plus supplement monensin (MON, 0.9g / kg BW), corn silage + plus supplement copaiba oil (COP 1 ml / kg of body weight) and corn silage + plus supplement monensin associated with copaiba oil (MC). The measurement of the variables evaluated in the rumen fluid of animals was held on the 13th experimental day by collecting the liquid / solid interface of the rumen mat, a rate of 40 mL immediately prior to supplementation and 2, 4, 6, and eight hours after delivery of the supplement. There was effect of adding monensin, but for the addition of copaiba oil and copaiba oil association + monensin. The association had the lowest N-NH 3 values of 7.51. For the pH there was no effect of adding copaiba oil, or the Copaiba oil association with monensin. The addition of monensin provided the highest pH (6.72). The pH value decreased after supplementation of animals, and the monensin having greater stability pH. The experimental design was 4x4 Latin square, with arrangement subdividias plots where took up the animal as a percentage, and time as subplots. The effects of supplementation were studied by analysis of variance and interaction seconds SAS static package.