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Phytase Efficacy in Laying Hens

Published: February 28, 2020
Doug Korver (University of Alberta) explained how to better evaluate the use of this enzyme in the nutrition of laying hens, during IPPE 2020 in Atlanta, USA.
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Doug Korver
University of Alberta
University of Alberta
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Ricardo Hume
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Mohammad Hosein Shahir
Zanjan University
5 de marzo de 2020

Dear Prof. Korver
Thank you so much for the valuable information.
Which dose of phytase do you recommend for laying hen?
Sincerely.

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Sayed Mohammad Mortazavi
20 de julio de 2020
Hi, Dear Prof, Thank you for the usable information on Phytase, obviously the effect of this enzyme is very visible especially in layers.
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AASHAQ HUSSAIN
Rossari Biotech Limited
20 de julio de 2020
Dear Prof. Korver, Thank you for the valuable information on Phytase. Dear sir, if phytase is for release of phosphorus from phytate complex, does it have also significant effect on Ca concentration and that is why Ca matrix is there. And how much Av. P matrix can be then considered for a product having 500FTU/Kg feed in layers.
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Doug Korver
University of Alberta
University of Alberta
22 de julio de 2020
AASHAQ HUSSAIN phytase works by removing phosphate groups from the phytate molecule. As such, other nutrients (including Ca) bound to the phosphates will also be released. In layer diets, the amount of Ca released by phytase in the context of total dietary Ca is very small, but real. FTU are determined under standard laboratory conditions, but different phytases have different thermostability and pH and temperature optima, so one product at 500 FTU will often have a different potency than another product at 500 FTU depending on the feed processing and gut conditions. It is best to work with your supplier to arrive an an appropriate matrix value for the specific phytase you are using.
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Paul Mwamba
29 de julio de 2020

I wrote my thesis on phytase in broilers at the University of Leipzig in 1994. I went on to launch the first phytase product in South Africa. Good to read this article.

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Doug Korver
University of Alberta
University of Alberta
29 de julio de 2020
Paul Mwamba Thank you.
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Dr.M.Shahid Zahoor
28 de agosto de 2020
in diet when we use Phytase improvement in P availability and digestibility. no doubt it increase bird performance but my question is when we use phytase it relase the other nutrients(protein,AA,mineral,carb.). when the GIT is colonized by enteric pathogen. these nutrients relase by phytase absorb by Enteric pathogen and increse the incidence of necrotic enteritis. so can we use phytase in shuttle programme ? 2-is this better to formulate feed without phytase with balance of Calcium and available P?
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Sina Payvastegan
Urmia University
Urmia University
30 de agosto de 2023
Dear prof Korver, Thank you very much for your informative data. Please give detailes regarding duration of using phytase in Layer diets.
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