Digestibilidade do extrato etéreo de dietas para poedeiras comerciais submetidas ao sistema de Split feeding

Abstract

It is very important that laying hens have a balanced diet in order to maximize their efficiency in egg production and quality. The objective of this work was to evaluate the digestibility of ether extract from split diets in split feeding system for commercial laying hens. The experiment was carried out at the Bird Experimentation Farm, at Fazenda do Glória-FUNDAP, at the Faculty of Veterinary Medicine, Federal University of Uberlândia, Uberlândia, MG. One hundred and twenty commercial Lohmann LSL laying hens, aged 38 weeks, were used in egg production cages, with density of (375 cm² / bird) six birds per cage (50 x 45) cm. The birds were divided into four treatments (30 birds / treatment), with five repetitions each (six birds). The treatments were determined by the distribution method and the type of feed provided (standard treatment, Split base, Split - 2%, Split + 2%) in two experimental periods of 28 days each. The birds were fed twice a day, each receiving 108 g of feed / day, divided into 54g in the morning and 54g in the afternoon. After that, the digestibility test was performed and the obtained data will be submitted to normality tests, analysis of variance and F test at 5% significance level. The main results found were that the diets divided in the Split feeding system presented ether extract digestibility equal to the traditional method of broiler laying hens, and the SF-2 treatment presented the lowest excretion of the ether extract, showing that Laying hens can be adjusted in a Split feeding system, reducing feed components and meeting the bird's metabolic and physiological requirements for egg formation.