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Enzyme supplements must be resistant
to degradation by mineral components
of feed and should be readily dispersed
through a diet during mixing. Photo
courtesy of Agrana.
it is possible to reduce the added dietary
inorganic phosphorus as mono- or dical-cium phosphate since a high proportion of
the vegetable-derived phosphorus will become available. This reduces the quantum
of phosphorus excreted. In many areas of
the world high concentrations of livestock
result in excessive phosphorus release
which is responsible for eutrophication
of bodies of water. Addition of phytase
to feeds is mandated on the Delmarva
Peninsula since the apparent problem of
phosphorus runoff from using natural and
artificial fertilizers has an undesirable eco-logic impact on the Chesapeake Bay.
The ultimate aim of a nutritionist is to
minimize feed cost per unit of saleable
product (eggs, broiler meat, pork) not
simply to produce the cheapest feed or to
obtain maximum growth or egg production. The general rule of thumb is that an
enzyme supplement should generate a
three- to four-fold return over the cost of
supplementation.
TABLE 2. BROAD SPECTRUM ENZ YME ADDITIVES PRODUC T SUPPLIER COMMENTS Allzyme®-SSF Alltech www.alltech.com Broad spectrum derived from Aspergillus spp. Avizyme Danisco www.danisco.com Broad spectrum enzyme complex Hemicell® Chem-Gen www.chemgen.com Broad spectrum principally, beta- mannanase derived from Bacillus lentus. Side activity includes amy- lase, beta-glucanase, xylanase Non-GMO. Multizyme® Xylanase AN900 Enzyme Development Corporation www.enzymedevelopment.com Narrow spectrum xylanase derived from Trichoderma spp. Multizyme® II Enzyme Development Corporation www.enzymedevelopment.com Broad spectrum, derived from Aspergillus & Bacillus spp. Activity includes amylase, protease, beta glucanase. Superzyme™-CS Canadian Bio-Systems www.canadianbio.com Broad spectrum product derived from Trichoderma, Bacillus, Saccharomyces & Aspergillus spp. Activity includes xylanse, gluca- nase, protease, cellulase, formu- lated for corn-soy diets. Superzyme™-OM Canadian Bio-Systems www. canadianbio.com As above. Formulated for cereal- oilseed diets. The general rule of thumb is that an enzyme supplement should generate a three- to four-fold
return over the cost of supplementation.
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