Use of a thermostable enzyme as a feed additive

Details Use of a thermostable enzyme as a feed additive Use of a thermostable enzyme as a feed additive

A - Human Necessities

23

K

A23K 1/165 (2006.01) A23K 1/18 (2006.01) C12N 9/24 (2006.01) D21C 5/00 (2006.01)

Patent

CA 2188558

A thermostable xylanase is provided as an additive for an animal feed. The xylanase is one which is able to tolerate heating for one minute in a waterbath set at 95 °C without substantial loss of activity. Such a xylanase may be obtained from Microtetraspora flexuosa or Thermomonospora fusca. A feed additive including such a thermostable xylanase is also provided in combination with a physiologically acceptable carrier which may be a cereal or cereal-based. A cereal-based feed is also provided which includes at least 20 % by wheight of a cereal and 0.000001-10 g of thermostable xylanase protein per kg of feed. The cereal may be any one of wheat, barley, maize, sorghum, rye, oats, triticale and rice. The cereal-based feed may be provided to any livestock, and in particular to poultry and pigs.

L'invention concerne une xylanase thermostable servant d'additif pour un aliment pour animaux et pouvant supporter d'être chauffé pendant une minute dans un bain d'eau porté à 95 ~C, sans perte importante de son activité. On peut obtenir une telle xylanase à partir de Microtetraspora flexuosa ou Thermomonospora fusca. L'invention concerne également un additif alimentaire comprenant une telle xylanase thermostable en combinaison avec un véhicule acceptable sur le plan physiologique et qui peut être une céréale ou à base de céréale. L'invention concerne également un aliment à base de céréale comprenant au moins 20 % en poids d'une céréale, et 0,00001 à 10 g d'une protéine de xylanase thermostable par kilogramme d'aliment. La céréale peut être du froment, de l'orge, du maïs, du sorgho, du seigle, des avoines, du triticale ou du riz. On peut donner cet aliment à base de céréale à tout type d'animaux d'élevage, notamment aux volailles et aux porcs.

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