Vitamina D associada a antioxidantes e vitamina K3 na alimentação de frangos de corte

Abstract

This study aimed to evaluate the effects of vitamin D supplementation associated with antioxidants and vitamin K3 in the diet of broiler chickens on productive aspects, meat quality, incidence of pectoral myopathies, bone quality, black bone syndrome and oxidative status of the serum, liver and chicken breast meat. A total of 768 one-day-old male chicks of the Ag Ross 308 strain were used, distributed in a completely randomized design, with eight treatments and six replications of sixteen birds each. The treatments consisted of eight feeds formulated to be isoenergetic and isonutritive: T1 – Control diet (CD); T2 – CD + Vitamin D; T3 – CD + Vitamin D + Antioxidant A; T4 – CD + Vitamin D + Antioxidant B; T5 – CD + Vitamin D + Antioxidant C; T6 – CD + Vitamin D + Vitamin K3; T7 – CD + Vitamin D + Vitamin K3 + Antioxidant B and T8 – CD + Vitamin D + Vitamin K3 + Antioxidant C. The vitamin D metabolite used was 25OHD3 (1836 IU/kg) and for vitamin K3, menadione nicotinamide bisulfite (0.63 mg/kg) was used. There was no significant difference between treatments for performance, carcass yield, total phenolics, antioxidant capacity and oxidative stability of serum and liver of birds. There was also no significant effect of additive supplementation of Vit. D, Vit. K3 and antioxidants on meat quality and bone quality as well as no influence of additives was also observed on total phenolics, antioxidant capacity, total antioxidant activity and lipid stability of meat. The interrelation of Vit. D with antioxidants and Vit. K3 did not negatively affect the incidence of pectoral myopathies and black bone ndrome. It is concluded that the associated use of these additives in the diet of broiler chickens does not affect the productive aspects, the quality of the meat, the incidence of pectoral myopathies, the bone quality, the incidence of black bone syndrome and the oxidative status in the meat and in the body of broiler chickens.