Thompson D J
J Anim Sci. 1980 Sep;51(3):767-72. doi: 10.2527/jas1980.513767x.
It is generally recognized that the inorganic phosphate ingredients in mixed feed or mineral supplements are the principal source of fluoride in the feed. Today, there are several types of feed phosphates available to the feed industry. This paper discusses how these supplemental phosphates are produced, the quantities utilized by the feed industry and what species consume them, and describes their phosphorus content, fluoride content and general cost. The phosphate industry, along with university researchers and the Association of American Feed Control Officials, set up standards for safe levels of fluoride in feed phosphates. A P toF ratio of 100:1 was adopted in 1952 for any product sold to the feed industry as "defluorinated phosphate." The phosphate industry has felt that products with this ratio are safe, and, on the basis of evidence available today, it is still felt that this is a safe level of fluoride in supplemental feed phosphates. Industry has the technology to produce feed phosphates of lower fluoride content; however, there is an increased cost in further reducing fluoride content.
人们普遍认为，混合饲料或矿物质补充剂中的无机磷酸盐成分是饲料中氟化物的主要来源。如今，饲料行业可以获得几种类型的饲料磷酸盐。本文讨论了这些补充磷酸盐是如何生产的、饲料行业的使用量以及哪些物种会消耗它们，并描述了它们的磷含量、氟含量和一般成本。磷酸盐行业与大学研究人员以及美国饲料控制官员协会共同制定了饲料磷酸盐中氟化物安全水平的标准。1952年，对于任何作为“脱氟磷酸盐”出售给饲料行业的产品，采用了100:1的磷氟比。磷酸盐行业认为具有该比例的产品是安全的，并且根据目前可得的证据，仍然认为这是补充饲料磷酸盐中氟化物的安全水平。行业拥有生产氟含量更低的饲料磷酸盐的技术；然而，进一步降低氟含量会增加成本。
