Desempenho de cordeiros recebendo diferentes níveis de torta de girassol em confinamento

Abstract

This study aimed to evaluate the performance of crossbred lambs suffolk confined and fed diets with inclusion of sunflower cake. The study was conducted at the Faculdade de Crencias Agri:11.1a / UFGD, city of Dourados-MS. We used 28 lambs, Suffolk crossbred, intact male, with an average weight of 21 kg, and 4 months of age were distributed in randomized block experimental design with seven replications and four diets. The treatments were: T 1- Treatment Control, VA sunflower cake (SC), T 2 - Treatment with 10% SC, T 3 - Treatment with 20% SC, T 4 - Treatment with 30'/o SC. The variables: nutrient intake, daily gain, feed conversion, weight, body condition and residual feed intake The dry matter intake (DMO, crude protein (CPA neutral detergent fiber (NDFI), total digestible nutrients (TDNI) and ether extract (BEI), expressed as kg dry mater (DM) per day in grams (g) per kg metabolic live weight and per cent, had significant effects (P <0.05) by Scott Knott as increased the level of inclusion in the diet of SC. Regression analysis for DMI, CPI, NDFI and TDNI showed the same characteristic where as it increases levels of TO increases are the days of confinement. The lowest results for average daily gain (ADG) were observed in animals fed diets containing 30% SC (74 g / animal / day). In this experiment, it was also observed that the animals in the control group obtained a residual feed intake (RFI) positive, indicating lower efficiency and contrary results were observed in animals that received SC in the diett. Feed conversion was no statistical difference (P>0.05) with a man of 6.09, however, there was a worsening in the conversion increased as the time of feedlot. There was no effect (P>0.05) diets on body condition (BC) at the beginning and end and initial weight of the animals of the experiment. This evidence probably the standardization of animals for slaughter. We conclude that the inclusion of up to 10% of sunflower cake to replace soybean meal and corn diet does not alter the dry mater intake and productive performance of crossbred lambs sulfolk.