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    Thermo-stable Escherichia coli phytase improves growth performance and nutrient utilization in broilers fed mash and pelleted corn/soybean-meal-based diets

    The bio-efficacy of Escherichia coli-derived phytase produced by thermo-protective coating technology (coated phytase) was evaluated in mash or pelleted broiler diets. Three hundred and twenty-four broilers were divided into 54 groups of six birds and fed nine corn-based diets (six replicates per diet) from 1 to 22 d of age. The nine diets were a positive control (PC) (calcium, 0.9% and non-phytate phosphorus, 0.45%) fed as mash plus 24 factorial of a negative control (calcium, 0.78% and non-phytate phosphorus, 0.26%) fed as mash (NC-M) or pellet (NC-P) and with coated phytase at 0, 500, 600 or 700 FTU kg1. The diets were pelleted at 808C, and pressure load of 40 psi. Body weight gain (BWG) for the PC diet was higher (PB0.001) than that for the NC-M or NC-P diet. The BWG and tibia ash were linearly increased (PB0.001) by increased level of the phytase in NC-M or NC-P diet. The BWG for NC-M or NC-P diet reached that of the PC diet when phytase was supplemented at 600 or 700 FTU kg1. In conclusion, the coated phytase improved nutrient utilization in broilers, and its bio-efficacy was unaffected by the pelleting process.
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    Document information
    Product / service: Phytases
    Publication date: 01/01/2010
    Species: Poultry, Broiler
    Authors: Woyengo TA, Emiola A, Owusu-Asiedu A, Guenter W, Simmins PH, Nyachoti CM
    Doctype: Publications & Citations
    Publication / conference: Canadian Journal of Animal Science, volume 90
    Regions and countries: Global
    Keywords: age, ash, bio-efficacy, bioefficacy, birds, body, weight, broiler, diets, broilers, calcium, coating, coli, phytase, control, dan, diet, escherichia, gain, growth, performance, mash, non-phytate, phosphorus, nutrient, utilization, pellet, pelleting, per, thermostable, tibia
    Production challenge(s): Gut health
    Diets: All diets
    Brands: Phyzyme® XP, Phycheck
    Resource ref: 11427
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