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DOI: https://doi.org/10.5713/ab.20.0663    [Accepted] Published online January 1, 2021.
Synergistic effect of exogenous multi-enzyme and phytase on growth performance, nutrients digestibility, blood metabolites, intestinal microflora and morphology in broilers fed corn-wheat-soybean meal diets
MinJu Kim1  , Santosh Laxman Ingale2, Abdolreza Hosseindoust3  , YoHan Choi4  , KwangYeoul Kim3  , JunHyung Lee3  , JinSoo Kim3  , ByungJo Chae3,* 
1Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, QLD 4072, Australia
2Advanced Enzyme Technologies Ltd., Thane, India
3College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
4Swine Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Korea
Correspondence:  ByungJo Chae, Tel: +82-33-250-8616, Fax: +82-33-244-4946, Email: bjchae@kangwon.ac.kr
Received: 20 September 2020   • Revised: 19 October 2020   • Accepted: 20 September 2020
Abstract
Objective
This study was conducted to investigate the synergistic effect of exogenous multi-enzyme and phytase on growth performance, nutrients digestibility, blood metabolites, intestinal microflora, and morphology in broilers fed corn-wheat-soybean meal diets.
Methods
A 22 factorial design was used in this study. Four dietary treatments consisted of (1) basal diets (corn-wheat-soybean meal based diets without multi-enzyme and phytase), (2) basal diets with phytase (0.05%), (3) basal diets with exogenous multi-enzyme (0.05%), and (4) basal diets with exogenous multi-enzyme including phytase (0.05%). A total of 480 broiler chickens (Ross 308 - one day old) were weighed and allotted to thirty-two cages (15 birds per cage), and chicks were randomly allocated to four dietary treatments.
Results
The bodyweight gain (BWG) and feed conversion rate (FCR) were improved by supplementation of exogenous multi-enzyme containing phytase during the finisher period (p<0.05). The birds fed diets with exogenous multi-enzyme containing phytase had a significantly greater digestibility of dry matter, gross energy, crude protein, calcium, and phosphorus compared with birds fed non-supplemented diets (p<0.05). The chickens fed diets with exogenous multi-enzyme containing phytase showed a higher concentration of Ca and P in the serum (p<0.05). The Lactobacillus spp. population had a significant increase in the ileum and cecum of chickens fed enzyme-supplemented diets (p<0.05) while the population of E. coli and Clostridium were significantly decreased by supplementation of enzymes (p<0.05). The dietary supplemental exogenous multi-enzyme containing phytase showed a significant improvement in villus height, crypt depth, and villus height and crypt depth ratio, compared to basal diets or dietary supplemental phytase (p<0.05).
Conclusion
The supplementation of the exogenous multi-enzyme containing phytase synergistically improved the growth performance, nutrients digestibility, and villus height of the small intestine of broiler chickens fed a corn-wheat-SBM based diets.
Keywords: Exogenous Enzyme; Broiler Chickens; Phytase; Nutrients Digestibility; Gut Microflora; Growth Performance


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