Serving Society through Food Animal Agriculture
January 2001
Dietary Adjustments to Minimize Nutrient Excretion from Livestock and Poultry[*]
Dietary adjustments
The
table below provides "potential" reductions in the excretion of
nutrients with dietary and/or feeding management adjustments for livestock and
poultry. It should be noted that these
potential effects are not, however, additive.
For more specific information see the FASS Fact Sheets related to the
specific food-animal species.
|
Strategy |
Nitrogen reduction (%) |
Phosphorus reduction (%) |
|
|
|
|
|
Formulation
closer to requirement |
10-15 |
10-15 |
|
Reduced
protein/AA supplementation (non-ruminants) |
10-25 (poultry) 20-40 (swine) |
|
|
Reduced
protein/AA and fiber supplementation (non-ruminants) |
10-25 (poultry) 20-40 (swine) |
|
|
Reduced
protein (ruminants) |
25-50 |
|
|
Reduced
P (ruminants) |
|
20-30 |
|
Use
of highly dig. Feeds |
5 |
5 |
|
Phytase/low
P (non-ruminants) |
2-5 |
20-30 |
|
Phytase/low
P/HAP corn (non-ruminants) |
2-5 |
40-50 |
|
Cellulases |
5 |
5 |
|
Growth
promotion |
5 |
5 |
|
Phase
feeding |
5-10 |
5-10 |
|
Split-sex
feeding |
5-8 |
|
Other feeding management practice (BMP's) effects:
BMP’s Credits
Fineness of grind/pelleting
(non-ruminants) 20-24%
reduced manure excretion and reduces N excretion 5%
(1000
microns to 700 microns)
Form
of minerals (non-ruminants) 15-50%
reduced mineral excretion
chelated
or organic)
(zinc, copper, selenium, manganese)
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