Effect of Phytase Level and Form on Broiler Performance, Tibia Characteristics, and Residual Fecal Phytate Phosphorus in Broilers from 1 to 21 Days of Age

The present study evaluated the individual and combined effects of coated and uncoated phytase on broiler performance, tibia characteristics, and residual phytate phosphorus (P) in manure. Two repeated studies were conducted using 240-day-old Cobb 500 by-product male broilers per trial. For each tri...

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Bibliographic Details
Published in:Animals (Basel) 2022-08, Vol.12 (15), p.1952
Main Authors: Hernandez, Jose R, Gulizia, Joseph P, Adkins, John B, Rueda, Martha S, Haruna, Samuel I, Pacheco, Wilmer J, Downs, Kevin M
Format: Article
Language:English
Subjects:
Amino acids
Birds
Body weight
bone mineralization
broilers
Coatings
Diet
Feces
Feed conversion
Feeds
Fractures
growth performance
Laboratories
Mineralization
Mortality
Nutrient utilization
Phosphorus
Phytase
phytate phosphorus
Poultry
Raw materials
Seeds
Shear strength
Tibia
Variance analysis
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Summary:The present study evaluated the individual and combined effects of coated and uncoated phytase on broiler performance, tibia characteristics, and residual phytate phosphorus (P) in manure. Two repeated studies were conducted using 240-day-old Cobb 500 by-product male broilers per trial. For each trial, birds were assigned to four treatments with four replicate battery cages per treatment (60 birds/trt) and grown for 21 days. Treatments included: (1) negative control (NC), (2) NC + 1000 phytase units (FTU) coated phytase (C), (3) NC + 1000 FTU uncoated phytase (U), and (4) NC + 500 FTU coated + 500 FTU uncoated phytase (CU). Data were analyzed with a one-way ANOVA and means were separated using Tukey’s HSD. In the pooled data for both trials, all treatments with dietary phytase had a higher body weight (BW) and feed consumption (FC) than the NC on day 21 (p < 0.05). Similarly, a six-point reduction was observed for day 1 to 21 feed conversion (FCR) for U and CU (p < 0.05). All treatments with phytase inclusion differed from the NC in every evaluated parameter for bone mineralization (p < 0.05) and had significantly lower fecal phytate P concentrations compared to the NC (p < 0.05). Overall, bird performance was essentially unaffected by phytase form, indicating that combining phytase forms does not appear to offer any advantage to the evaluated parameters from day 1 to 21.
ISSN:2076-2615
2076-2615
DOI:10.3390/ani12151952