Economic Returns from Reducing Poultry Litter Phosphorus with Microbial Phytase
Опубликовано на портале: 28-04-2005
Journal of Agricultural and Applied Economics.
1997.
Vol. 29.
No. 2.
P. 255-266.
Тематический раздел:
Requiring that crop applications of manure be based on phosphorus content (P-standard)
could increase poultry litter disposal costs, Microbial phytase reduces litter P
content and
could reduce litter disposal costs under a P-standard, For a representative Virginia
turkey
farm, phytase costs $2,500 and could increase value of litter used for fertilizer
on the
turkey farm by $390 and reduce supplemental P feed costs by $1,431. Based on assumed
litter demand and supply, estimated litter export prices with phytase could exceed
export
prices without phytase by $3.81 per ton. Phytase net returns to the farm are an estimated
$1,435.
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