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Revista Colombiana de Ciencias Pecuarias
Print version ISSN 0120-0690
Abstract
HASHEMI, Mohammad; SEIDAVI, Alireza; JAVANDEL, Faramin and GAMBOA, Sandra. Influence of non-starch polysaccharide-degrading enzymes on growth performance, blood parameters, and carcass quality of broilers fed corn or wheat/barley-based diets. Rev Colom Cienc Pecua [online]. 2017, vol.30, n.4, pp.286-298. ISSN 0120-0690. https://doi.org/10.17533/udea.rccp.v30n4a04.
Background:
Although the use of non-starch polysaccharide-degrading enzymes (NSPases) in corn, oat, rye, barley or wheat-based broiler diets has already been researched for some years, little attention has been given to the mixture of wheat and barley, as basic raw materials for broiler feed.
Objective:
To evaluate the effect of different inclusion levels of commercial NSP enzymes in corn or in the mixture of wheat/barley-based diets on growth performance, carcass quality and blood parameters of broilers.
Methods:
Three hundred 1 d-old male broiler chicks (Ross-308) were fed two basal diets (corn and a wheat/barley-based diets), two commercial feed enzymes (Kemin® and Rovabio®), and two enzyme levels (0.025 and 0.05%) in a 2×2×2 factorial arrangement, from 1 to 42 d of age.
Results:
Overall, birds fed corn-based diets with or without enzyme supplementation consumed more feed (p<0.05) over the entire experiment, experienced higher weight gain (p<0.05) and lower feed conversion ratio (FCR; p<0.05) when compared with wheat/barley-based diet. Notwithstanding, FCR did not improve in birds fed corn-based diets with enzymes, while gain and FCR improved (p<0.05) feeding wheat/barley-based diets with 0.05% NSPases. Economical traits of carcass were not affected (p>0.05) by the treatments, while blood biochemistry parameters, such as glucose, VLDL and HDL changed (p<0.05) when enzymes were supplied.
Conclusion:
Our results show bio-efficacy of feeding xylanases and glucanases in wheat/barley based-poultry diets, rich in NSPases, which could translate into economic benefits.
Keywords : carcass characteristics; cereals; exogenous NSP-ases; feed efficiency; poultry nutrition.