Enzyme supplementation in diets based on corn and soybean meal can improve
the productive performance of broilers. Thus, we aimed to evaluate the
effect of the inclusion of different levels of an enzyme complex consisting
of phytase, protease, xylanase, ?-glucanase, cellulase, amylase, and
pectinase, for diets based on corn and soybean meal, on the parameters of
carcass yield and meat quality of broilers. Six hundred broiler chicks were
used, and the animals were females with one day of age, from the Cobb 500
strain, and distributed in a completely randomized design, with five levels
of inclusion of the enzyme complex (0, 100, 200, 300 and 400), and six
repetitions, with twenty animals each. The carcass yield and meat quality
were evaluated at 35 and 42 days of age. We evaluated the characteristics of
weight loss by cooking (WLC), shear force (SF), water holding capacity
(WHC), pH, lightness (L*) and color (a* and b*). The parameters of
performance, carcass yield and carcass parts, and meat quality were not
affected by the enzyme supplementation of diets fed to broiler chickens (P
>0.05), except for the performance characteristics of the breast and the
wings at 42 days of age (P < 0.05).
Effects of dietary onion (Allium cepa) extract supplementation on performance, apparent total tract retention of nutrients, blood profile and meat quality of broiler chicks