Positive results with thermostable phytase
Cutting-edge “Thermo Protection Technology” which protects phytase from the adverse effects of high temperatures during feed conditioning and pelleting represents an exciting step forward for the feed industry, scientists from Danisco Animal Nutrition told delegates to the 2007 International Poultry Scientific Forum in Atlanta, Georgia.
Thermo Protection Technology involves applying a coating to the phytase.
During independent trials conducted by the Technological Institute at
Kolding in Denmark the coated phytase was included in the feed prior to
conditioning and pelleting at temperatures of 90°C (194°F) or 95ºC (203ºF).
Analysis showed that, relative to unprocessed mash feed, 99% of the phytase
activity remained after conditioning and pelleting at 90°C (194°F), whilst at
95°C (203ºF) 96% of the phytase activity remained. This compares with 75%
activity at 90°C (194°F) and 66% activity at 95ºC (203ºF) for another
commercially-available phytase product that is claimed to have similar
thermostable properties.
Effective release
In trials conducted by ADAS in the UK, broilers were fed
diets containing either the uncoated or coated new-generation phytase.
Liveweight gain, feed conversion ratio (FCR) and tibia ash were then measured.
No significant differences were found between broilers fed either the uncoated
or the coated phytase, confirming that the coating allows phytase to be released
effectively in the bird’s gut.
Related links:
Danisco Animal
Nutrition
Use of
phytase in poultry feed
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