Influence of non-starch polysaccharide-degrading enzymes on growth performance, blood parameters, and carcass quality of broilers fed corn or wheat/barley-based diets


  • Mohammad Hashemi Islamic Azad University
  • Alireza Seidavi Islamic Azad University
  • Faramin Javandel Islamic Azad University
  • Sandra Gamboa Polytechnic Institute of Coimbra



carcass characteristics, cereals, exogenous NSP-ases, feed efficiency, poultry nutrition


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.

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Author Biographies

Mohammad Hashemi, Islamic Azad University

MSc., Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran.

Alireza Seidavi, Islamic Azad University

PhD., Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran.

Faramin Javandel, Islamic Azad University

MSc., Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran.

Sandra Gamboa, Polytechnic Institute of Coimbra

PhD., Coimbra College of Agriculture, Department of Animal Sciences, Animal Reproduction Laboratory, Polytechnic Institute, Coimbra, Portugal. Research Center for Natural Resources, Environment and Society (CERNAS), Polytechnic Institute, Coimbra, Portugal.


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How to Cite

Hashemi, M., Seidavi, A., Javandel, F., & Gamboa, S. (2017). Influence of non-starch polysaccharide-degrading enzymes on growth performance, blood parameters, and carcass quality of broilers fed corn or wheat/barley-based diets. Revista Colombiana De Ciencias Pecuarias, 30(4), 286–298.



Original research articles