Avaliação de suplemento energético em níveis crescentes no concentrado para ovinos – consumo e bioquímica sanguínea

Abstract

The objective was to estimate the different levels of inclusion of an energetic supplement in the concentrate in relation to consumption and blood biochemistry. The experiment was carried out with lambs with about eight months of age and an average weight of 40Kg. They were distributed in 5x5 Latin square digestibility study cages with five different treatments: 0%, 5%, 10%, 15%, 20% inclusion in the concentrate. The ewes obtained the different levels of energetic supplement in the concentrate with a ten-day adaptation diet and another five days of collection for each animal receiving each treatment on a diet with a roughage concentrate ratio of 50:50. The animals received an average of 3.5% of the live weight of feed. Feces, leftovers of the offered, leftovers of water were collected and the volume and density of urine were measured during the five days of collections for each animal in each phase. Blood was collected three times during the collection days, alternating days, with the first blood collection, on the first day of data collection for each phase, to determine the concentrations of urea, uric acid, creatinine, albumin, total proteins, cholesterol, glucose and triglycerides. The different levels of inclusion of the product in the concentrate did not influence statistically in relation to consumption, there was a statistical difference in relation to the consumption of dry matter in relation to the live weight (DMF) and in relation to the consumption of dry matter in relation to the metabolic weight (DMF), with variation of polynomial regression. It is observed that as the product is included in the concentrate, the faeces tend to soften and, consequently, the amount of water in the faeces increases. Of the blood parameters, no statistical variation was found.