Quirera de arroz e pigmentantes na dieta de frangos de corte

Abstract

The use of rice grits as alternative food is an option for the preparation of diets that contain all the nutrients able to meet the needs of the animals. The additives are compounds that do not provide nutrients to the animals, but have or confer a desirable characteristic or property. This work was developed at Experimental Avian Federal Institute of Rio Grande do Sul (IFSUL) campus Pelotas/Viscount of Grace with the objective of evaluating the effect of broken rice (QA) and pigments (PG) in the diet of broiler chickens on performance, yield cuts, offal and carcass characteristics and meat 240 birds, male and female Cobb, one day old, up to 42 days were used. The birds were distributed in a completely randomized design and fed diets containing 0 and 40% broken rice with increasing levels of pigments (0% - T1, T2-40 % QA and 0% PG , T3-40% QA + 5g/ton PG PG 25g/ton red and yellow, T4- 40% QA + 10g/ton PG red and 25g/ton PG yellow, T5 - 40 % QA + 15g/ton PG red and 25g/ton PG yellow). Diets were formulated based on corn and soybean meal. Data analyzes were performed using SAS statistical software. Data were subjected to analysis of variance, with a significance level of 5%, and Tukey test for comparison of means. There was at no stage of creating a statistical difference on the zootechnical performance of the birds. At 42 days of age, it was observed that there was no significant effect of the level of replacement of broken rice and increasing levels of pigments. The yield of breast, thigh, drumstick, wing back and were not influenced by diet. The weight of the gizzard, liver and heart, as well as their yields were not affected by the inclusion of 40% broken rice in the diet, as well as increasing levels of pigments did not affect the variables. The water retention capacity cutting the breast not influenced by diet. The pH showed no statistically significant difference being within the expected values for chicken. Statistical difference only for the analyzes performed 24 hours after slaughter, the staining intensity for the yellow color was significant among treatments (p<0.05). In other analyzes, no significant differences were observed. Thus, it can be concluded that the rice grits is an energy food quality that can be incorporated in the diets of broiler chickens, and the supplementation of the diets containing pigments rice grits may be required according to the intended market.