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International Journal of Poultry Science
  Year: 2020 | Volume: 19 | Issue: 10 | Page No.: 455-466
DOI: 10.3923/ijps.2020.455.466
 
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Effect of β-Mannanase Enzymes Supplementation to Energy Deficient Diets on Productive Performance, Physiological and Carcass Traits of Broilers

M.M. Hashim, S.A. El-Safty, K.G. El-Eraqi, H.M.R. El-Sherif, T. Azza, K. Marwa, H.M. Ibrahim and A.Y.M. Abdelhady

Abstract:

Objective: This experiment was conducted to assess the beneficial effect(s) of β-mannanase (Lycell® and Hemicell®) supplementation to low energy diet on productive performance, gross energy digestibility, hematological parameters and carcass traits of broiler chicks. Materials and Methods: A total of 540, day old Ross 308 broiler chicks, obtained from local hatchery with mean body weight of 33±0.05 g, were randomly assigned to three dietary treatments, 180 birds each. The treatments were T1 (low energy diet, 80 kcal kg1, as control), T2 (low energy diet +250 g t1 β-mannanase from Lycell® product) and T3 (low energy diet +300 g t1 β-mannanase from Hemicell® product). The parameters recorded were growth performance, carcass traits, haematological and blood biochemical parameters, dropping and litter microbiology, gut histomorphology and digestibility trial. Results: Results demonstrated that β-mannanase improved growth performance (p<0.05) in terms of body weight, weight gain, feed intake and feed conversion ratio from three to five weeks of age. Carcass traits criteria including dressing weight, dressing percentage, and abdominal fat were significantly (p<0.05) affected by β-mannanase while gizzard, heart and spleen weight were not affected by the dietary treatments. Moreover, the dietary treatments did not affect the dry matter digestibility (DMD) and organic matter digestibility (OMD) of broiler. Conclusion: β-mannanase enzymes, either Lycell® or Hemicell®, supplementation should be considered when low energy diets are formulated in broiler.

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How to cite this article:

M.M. Hashim, S.A. El-Safty, K.G. El-Eraqi, H.M.R. El-Sherif, T. Azza, K. Marwa, H.M. Ibrahim and A.Y.M. Abdelhady, 2020. Effect of β-Mannanase Enzymes Supplementation to Energy Deficient Diets on Productive Performance, Physiological and Carcass Traits of Broilers. International Journal of Poultry Science, 19: 455-466.

DOI: 10.3923/ijps.2020.455.466

URL: https://scialert.net/abstract/?doi=ijps.2020.455.466

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