Avaliação metabólica no pré-parto em dois sistemas de produção de ovinos

Abstract

The identification of the metabolic profile in animal production acts as an method in the evaluation of herds with different production and reproductive index as well as an important tool in clinical diagnosis of metabolic diseases that can affect the productive performance of animals. First was discourse influence the metabolic profile on growth performance of pregnant ewes, through a literature review on the topic. In the second part of the study, we assessed the metabolic pre-partum ewes reared in two production systems, native grassland and pasture cultivated oat (Avena strigosa) and ryegrass (Lolium multiflorum). Listing for this 40 adult Texel pure breed sheep were used during pre-partum and their lambs, being dosed metabolites of energy, protein and mineral metabolic profile. Animals kept in cultivated pasture showed higher glucose and urea, while lower serum levels of Ca and P than animals on native pasture, the other metabolites did not differ between production systems. Only the levels of glucose, calcium and phosphorus of the sheep pre delivery correlated with the weight of the lambs at 30 days. The production system influence the metabolic profile of the sheep during pre-partum and weight of lambs at 30 days of age is correlated with the glucose level of the mother in late pregnancy. However, after conducting a literature review on the subject, it was found that there are few studies on the effect of gestational metabolic alterations on development of lambs generated. Thus, there is need for further research aimed to clarify issues related to this theme.