Phytase-containing animal food and method

Details Phytase-containing animal food and method Phytase-containing animal food and method

A - Human Necessities

23

L

A23L 1/20 (2006.01) A23K 1/00 (2006.01) A23K 1/165 (2006.01) A23K 1/175 (2006.01) A23K 1/18 (2006.01) C07H 21/04 (2006.01) C07K 1/00 (2006.01) C12N 1/20 (2006.01) C12N 9/16 (2006.01) C12N 15/00 (2006.01)

Patent

CA 2465202

A method is described for improving the nutritional value of a foodstuff comprising a source of myo-inositol hexakisphosphate by feeding the foodstuff in combination with a phytase expressed in yeast. The method comprises the step of feeding the animal the foodstuff in combination with a phytase expressed in yeast wherein the phytase can be selected from the group consisting of AppA1, AppA2 and a site-directed mutant of AppA. The invention also enables reduction of the feed to weight gain ratio and an increase bone mass and mineral content of an animal. A foodstuff and a feed additive comprising AppA2 or a site-directed mutant of AppA are also described.

L'invention concerne un procédé servant à améliorer la valeur nutritionnelle d'un aliment comprenant une source de myo-inosito hexakisphosphate par apport de cet aliment à l'animal en association avec une phytase exprimée dans la levure. Ce procédé consiste à alimenter l'animal avec l'aliment associé à une phytase exprimée dans la levure, cette phytase pouvant être sélectionnée dans le groupe constitué par AppA1, AppA2 et un mutant de AppA ciblé. L'invention permet également de limiter le rapport entre l'aliment et la prise de poids et d'augmenter la masse osseuse et la teneur en minéraux de l'animal. Elle concerne également un aliment et un additif alimentaire comprenant AppA2 ou un mutant ciblé de AppA.

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