Associação do bagaço de cana-de-açúcar, palma forrageira e uréia com diferentes suplementos em dietas para novilhas da raça holandesa

Abstract

This work was carried out to study the effect of supplementation with wheat meal, soybean meal and cracked corn (1 kg/heifer/day), on the performance of Holstein heifers fed with forage cactus (69.8%), sugar cane bagasse (27.6%) and urea (2.6%) based diets. Twelve heifers, with an initial live weight of 224 kg were used. The supplements did not affect intakes of dry matter (kg/day and % of LW) organic matter, neutral detergent fiber (kg/day and % of LW), total carbohydrates and non fiber carbohydrates (7.79 kg/d; 3.30%; 7.27 kg/d; 3.34 kg/d; 1,41%; 6.15 kg/d and 2.81 kg/d, respectively). The heifers that received soybean meal as supplement, showed larger intake of crude protein, total digestible nutrient and average daily weight gain (1.31, 4.56 and 1,17 kg/day, respectively). The average daily gain were 0,71 and 0,24 kg/day for heifers supplemented with wheat meal and cracked corn, respectively