Borra de manipueira em substituição ao milho na dieta de cordeiros

Abstract

With the objective of evaluating the effect of replacing corn by grounds of cassava wastewater on 4 levels (0, 33, 66 and 100 %), under consumption and nutrient digestibility, chewing behavior, performance and metabolic profile of 40 lambs weighing mean body 19.45 kg fed diets based on spineless cactus, Tifton hay and soybean meal. The replacement of corn by cassava dregs not affect the intake of dry matter, organic matter, crude protein, non-fibrous carbohydrates and total digestible nutrients in grams/day. The ether extract intake quadractricaly. The consumption of NDF decreased linearly. The digestibility coefficients of dry matter, organic matter, crude protein, non-fibrous carbohydrates and total digestible nutrients increased linearly, the digestibility of neutral detergent fiber was not affected. Periods of eating, ruminating and idling were not affected, the efficiencies of feeding and rumination dry matter were not affected by the substitution of corn by cassava dregs. Have the efficiencies of feeding and rumination neutral detergent fiber showed linear negative effect. The body weights at the end of the experiment were not affected. The mean weight at the end of the experimental period was 37.92 kg. Feed conversion of lambs was not affected by the substitution. Hematological parameters and metabolic profile showed no influence of substitution. The grounds of cassava wastewater replacing corn does not limit the intake of nutrients optimizes digestion of dry matter and nutrients while maintaining the standards for lamb production quality.