Docstoc

Action of Phytase

Document Sample
Action of Phytase Powered By Docstoc
					   Phytate P content of Major
          Swine Feeds
Foodstuff            Total P(%)       Phytate
                                    (% of Total P)
Barley                   0.34             56
Corn                     0.26             66
Wheat                    0.30             67
Soybean meal             0.61             61
Cottonseed meal          1.07             70
Sesame meal              1.27             81
Wheat bran               1.37             70

Adapted from Nelson et al. Poultry Sci. 47:1372 ‘68
                  Action of Phytase
               + +
               O Ca O                 O




                                  =
                              +    -
             O=P-O O- P =O      Ca O-C-CH2-Protein
Starch         O       O    O+                  OH   OH
 Protein                  O=P-O
                -+          O
          H    O Mg H                      H              OH
   CH                +                          H    H
       2     O=P-O -
    NH+                H    H + 6 H 2O               H        + 6 H3 PO
        3O     O                           OH             H            4
      - O-P=O
          O    H       O
                           Phytase              H    OH
                                                                +
                                                               Protein
                     O-P=O
                                             Inositol          Starch
      Phytate          OH
                                                               Minerals
                       CH20H
                     Starch
      How the EnviropigTM Works
  Phytase produced in the
    salivary glands and
   secreted in the saliva
                                     Pancreas
                                                  Cecum
                            Liver


               Stomach
Indigestible                                                  Manure
Phytate
                                    Small                      low in
phosphorus        Phytase
in the diet                         Intestine               Phosphorus
                                          PHOSPHATE Colon
           Phytate Phosphate              ABSORPTION

               Phytate in a non-Transgenic pig
               Phytate in the Enviropig

				
DOCUMENT INFO