CORN DISTILLERS' DRIED GRAINS WITH SOLUBLES ON PERFORMANCE AND GASTROINTESTINAL CHARACTERISTICS OF BROILERS

This study has as an objective to determine the effect of different inclusion levels of dried distillery grain with soluble (DDGS) on meat chicken diet to its performance, carcass yield and cuts and gastrointestinal tract biometry. A mixed lot of 700 one-day-old chickens from COOB 500 linage was used, distributed in a completely randomized design with 5 treatments, 7 repetitions and 20 broilers per experimental unit, were 10 was male and 10 female. The studied levels of DDGS were 4; 8; 12 and 16% of inclusion on experimental rations, plus the control treatment (0%). At the 1st and the 42nd days of life, the broilers were weighted, as the remains of ration to obtain variables of performance. For performance it was evaluated weight gain (WG) (g/bird/day), ration consumption (RC) (g/bird/day), feed conversion (FC), medium weight (MW), productive efficiency index (PEI), and viability (V). At 42 days of age 2 broilers from each lot was selected, weighted and identified with medium weight from the experimental unit for slaughtering and evaluation of cuts yield, carcass and gastrointestinal biometry. The evaluated parameters were submitted to variance analyses with 5% of probability using the statistical program SAS. Effects of inclusion of DDGS were estimated through variable analyses via linear regression models and the contrasts by the Dunnett test with 5% of probability. For the variables WG, FC, MW and PEI on the period of 1-42 days of production, it was obtained values of better performance on the level of 7,28%; 10,60%; 12;10% e 12;92% respectively. There was a reduction of carcass weight, of breast and fat of the broilers when using 12 and 16% of DDGCS. Therefore, it has indicated the inclusion of until 11, 02% and 7, 44% on the diet so there is no loss on carcass yield and breast weight, respectively.