Desempenho de bezerros leiteiros submetidos a diferentes níveis de aleitamento

Abstract

The effects of the supply of three milk levels (T1-15, T3-20 and T4-25% according to body weight at birth) and also on the provision or not of alfalfa hay at the level of 20% (T2 ) in the diet of Jersey calves PO was used 32 animals randomly assigned to treatments, composed of four males and four females per treatment, evaluated in two periods, the lactation and post-weaning. It was evaluated DM intake, body weight, average daily gain of body weight and morphometric measurements. The variables were evaluated using the statistical program R, as repeated measures. No difference was observed for the variable consumption in MS. differences were observed (P <0.05) between treatments for body weight and average daily gain in body weight between treatments, and the average of these ratings were higher assigned to the animals receiving 25% liquid diet where the animals were weaned with 50.27; 58.36; 54.73 and 63,77kg liveweight for T1, T2, T3 and T4 respectively. Regarding the morphometric measurements were also observed differences between treatments in breast-feeding, except for withers height. As for the post-weaning period there was a significant difference (P<0.05) compared to the weights, but not between morphometric measurements or between the feed and hay consumption. It can be seen that higher levels of milk in the diet calves are favorable for a better production performance in these animals.