Daiana Aparecida Quintiliano

Avaliação bromatológica e perfil de ácidos graxos da carne de frangos de corte alimentados com rações contendo farinha de peixe ou aveia-branca

The objective was to analyze the chemical composition and profile of fatty acids of broilers meat (breast and drumstick/thigh) fed diets with fish meal and oats. A completely randomized design, with five diets, three replications of 10 birds each, was used. Diets with 4.5 or 9% fishmeal, 10 or 20% oats, and control diet were evaluated. There was no difference in breast chemical composition. Drumstick/thigh of birds fed diets with 9% fishmeal and 10% oats showed greater amount of lipids than those fed control diet and diet with 20% oats. Composition of saturated fatty acids, as for breast and as for drumstick/thigh, did not differ between the birds. Diet with 20% oats increased the amount of palmitoleic acid in the breast in comparison to that with 9% fishmeal. Accretion of fatty acid in drumstick/thigh was higher in birds fed both diets with oats and lower in those fed diet with 9% fishmeal. Diet with 9% fishmeal showed greater potential to increase polyunsaturated fatty acids ω3 (alfa-linolenic) in breast and ω6 in drumstick/thigh, as compared to diets with oats. However, diet with 9% fishmeal showed greater accretion of ω3 in drumstick/thigh. Use of oats in diet improves the profile of monounsaturated fatty acids, especially palmitoleic acid, while use of 9% fish meal in diet improves the profile of ω3 and ω6 polyunsaturated fatty acids.

Avaliação zootécnica e qualidade da carcaça de frangos de corte alimentados com rações contendo farinha de peixe ou aveia branca

The present research was aimed at analyzing the performance and the chemical composition of the chicken meat (chest and thigh/on-thigh) fed with different rations containing fish meal or white oat. Five treatments with 5 repetitions with 10 birds for each experimental unit had been tested, totalizing 250 animals created, from 1 to 40 days old. The chickens had been lodged in cages receiving rations contend 4.5% and 9% of fish meal, or, 10% and 20% of white oat, and the control diet. The chemical analyses of humidity, ashes, rude protein and ether extract were done in an animal for each repetition. It was not observed difference (P>0.05) for the ration consumption, gain of daily weight and alimentary conversion. There was no difference (P>0.05) in the chemical composition of the chest broiler meat. In the thigh/on-thigh analyzed, the treatment including 9% of fish meal provided significant increase of lipids in relation to the control diet and to that including 20% of white oat ration. It is conclude, that it is possible to use the 4 types of rations tested without intervening in the birds performance, being that, the 9% of fish flour inclusion and 10% of oat had increased the lipids in the chickens thigh/on-thigh meat.