Efeito da nutrição materna sobre o desenvolvimento da progênie de codornas de postura

Abstract

ABSTRACT: Supplementation of a blend with phytogenic additives in the diet of laying quail breeders can improve reproductive performance and egg quality, in addition to positively influencing the health and development of the progeny. Therefore, our objective was to evaluate the effect of adding a blend of essential oils, organic acids, curcumin, tannins, vitamin E and microencapsulated zinc to the maternal diet on the productive and reproductive parameters of Japanese quail breeders, as well as the effects of maternal nutrition on embryonic development and progeny at 15 days of age. At 84 days of age, 100 females with an average weight of 153.30 g and a laying rate of approximately 85% were distributed in a completely randomized design with two dietary treatments, reference diet (n = 50 birds) and reference diet with blend (n = 50 birds). The inclusion of blend in the maternal diet increased egg mass (p<0.05). There was also a significant difference (p<0.05) for the total hatching rate and fertile eggs, with the best results observed in the breeders that consumed the diet with the blend. No significant effect of the diet was observed on the laying rate, average egg weight, egg moisture loss and the number of preovulatory follicles (p>0.05). The embryos from the breeders that received the diet with blend were heavier at 15 days of incubation (p<0.05). There was no effect (p>0.05) of treatments on yolk sac weight and embryo length. Maternal diet did not influence birth weight or 15-day-old weight of the offspring (p>0.05). The length of the intestine at 15 days was greater in the quails of the breeders that received a blend diet (p<0.05). The addition of the blend composed of essential oils of cinnamon, eugenol, thymol and oregano, organic acids (citric acid, fumaric acid, sorbic acid and malic acid), curcumin, tannins, vitamin E and microencapsulated zinc, optimized the performance of the breeders, in addition to having shown a positive effect on the embryonic and intestinal development of 15-day-old quail chicks.