Industrial considerations related to fluoride toxicity

Area of Science:

• Animal Nutrition
• Agricultural Science
• Toxicology

Background:

• Inorganic phosphates in animal feed and mineral supplements are the main source of dietary fluoride.
• Several types of feed phosphates are available, varying in production methods, usage, and species consumption.

Purpose of the Study:

• To discuss the production, utilization, and species consumption of supplemental feed phosphates.
• To detail the phosphorus, fluoride content, and cost of various feed phosphates.
• To review the established safety standards for fluoride in feed phosphates.

Main Methods:

• Review of feed phosphate production processes.
• Analysis of industry data on phosphate utilization and species consumption.
• Examination of phosphorus and fluoride content in feed phosphates.
• Discussion of cost implications for fluoride reduction.

Main Results:

• The phosphorus to fluoride (P:F) ratio of 100:1 was adopted in 1952 for "defluorinated phosphate."
• This P:F ratio is currently considered a safe level for supplemental feed phosphates.
• Technology exists to produce feed phosphates with lower fluoride content, but at a higher cost.

Conclusions:

• The established safety standards for fluoride in feed phosphates, particularly the 100:1 P:F ratio, are considered adequate.
• While lower fluoride levels are achievable, increased production costs are a limiting factor.
• Continued monitoring and adherence to safety standards are crucial for animal health.