Influência da suplementação em borregas da raça ideal submetidas a um protocolo de indução de estro

Abstract

One key factor to suceed in ovine production is reproductive performance. To achieve a good reproductive performance, a proper nutritional management is needed, together with advanced techniques to improve reproduction. Estrus induction using progestagens is one of these. In this experiment, 50 Ideal female lambs were used, in order to evaluate their response to flushing and estrus induction with intravaginal sponges inpregnated with Medroxiprogesterone (MAP). Animals were divided in 2 groups of n=25 each; both were submitted to a long protocol (14 days) of estrus induction. One of the groups was supplemented with commercial feed (Irgovino®). After sponge withdrawal, females had their estruses controlled with aid of a ram with marking paint. Number of animals in estrus did not differ (P> 0,05) between groups: group 1 without supplementation (59,09%) and group 2 with supplementation (57,14%). It was concluded that this program, of a 14-day protocol with association of MAP and eCG, was efficient to induce estrus in 11-month lambs independently of supplementation.