Padrões de deslocamento de bezerras de corte que receberam suplementos isolipídicos em pastagem de azevém

Abstract

The use of feeding stations, displacement patterns and bite rate of beef heifers kept exclusively on Italian ryegrass (Lolium multiflorum Lam) or receiving supplements (corn grain or fat) were evaluated. The grazing method was continuous with a variable number of animals. The experimental design was a completely randomized design with repeated time measures. The number of bites per feeding station is similar when heifers receive supplement or not. The prediction equations show that the mass of leaf lamina has greater influence on the time per feeding station when heifers remain exclusively grazing ryegrass or receive corn grain as a supplement, while for calves that receive fat this variable is influenced by forage allowance. The displacement (steps between stations and steps per minute) of heifers exclusively on ryegrass or receiving corn grain is influenced by the structure and quality of grass. The bite rate of heifers supplemented with corn grain and fat is influenced by the proportion of leaf lamina in the sward. Multiple regression equations considering the attributes of grass and pasture can be used as models to predict the use of feeding stations, displacement and bite rate of beef heifers.