Aditivos probióticos no desempenho e na qualidade de ovos de poedeiras comerciais

Abstract

The objective of this work was to evaluate the performance and quality of eggs of commercial laying hens that received diets supplemented with probiotics additives. The Experiment was conducted in the facilities of the Poultry Sector of the Animal Science Department of the Center for Agricultural Sciences of the Federal University of Paraíba (UFPB). 480 Hy-line W-80 laying hens of the, at 50 weeks of age, were obtained at 1 day of age. The experimental diets were formulated to meet the nutritional recommendations of Rostagno et al. (2017). The additives to be evaluated were added to the basal diet according to the manufacturer's recommendations (T1: basal dietwithout additive supplementation; T2: basal diet with the Optimus additive; T3: basal diet with the Maximos additive; T4: basaldiet with the additive Sinergis; T5: basal diet with the additive Goldasac; T6: basal diet with the additive Nucleobase), with eight replicates and eight birds per experimental unit. The data obtained were subjected to analysis of variance using the SAS software (2005), using the procedures for analysis of variance and in case of significant effect, the means were compared by Dunnet's test at 5% probability for the control treatment in relation to the other treatments. Regarding the final averages presented in the experiment, none of the performance variables showed a significant difference compared to the control (P> 0.05). In the evaluation of egg quality, treatment 5 (Goldsac) showed a difference in the color of the yolk, greater yolk weight, percentage of yolk in relation to the whole egg, in relation to the control treatment. Treatment 6 (Nucleobase) showed a lower percentage of peel and specific gravity in relation to treatment 1. The other variables did not show significant difference between the means. Among the additives used, Goldsac supplementation is recommended, as it has positive effects on the final results.