Desempenho de ovelha mistas no pós-parto e de suas crias em sistema de creep feeding e em fase de determinação

Abstract

Productive characteristics evaluated (weight gain and morphometric measurements) of sheep, newly calved of Santa Inês and Texel, intensive grazing, submitted to concentrate supplementation, in nestling management. In addition, it evaluated weight gain (weight gain and morphometric measurements) of lambs, sons of the same sheep in supplemented breast-feeding or not creep system - feeding and later finishing phase, subjected to three levels concentrated insert (0, 400 and 800 g. Animals. Day-1). In the finishing phase, 24 weaned lambs used. As a procedure for the evaluation of treatments in the study of the sheep and lambs in feeding phase, the experimental design was a randomized block, with the differences between treatments determined by the F test in lambs termination assay, evaluated variables subjected to analysis of variance followed and an adjustment in linear regression. All inferential procedures performed considering for the manifestation of the differences, a maximum of 5% random error. There found increase in body weight in either animals categories studied in breast-feeding. In the morphometric characteristics, group 2 ewes had lower height croup. In the finishing phase, the supplemented animals showed better performance when submitting ideal weight for slaughter at 95 days, the age at which animals without supplementation had average weight less than 28 kg. As for morphometry, the animals of the second test showed homogeneity in the morphometric characteristics.