- By Maylin GA, Eckerlin RH, Krook L.
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- Chronic fluoride intoxication in dairy cattle, caused
by feeding fluoride contaminated commercial feed, was previously described
in a dairy herd. Dental fluorosis and a catastrophic decrease in milk yield
were the foremost findings. In calves born to the fluoride intoxicated
cows, congenital fluorosis was manifested by brown discoloration of enamel,
enamel hypoplasia, brown mottling of bone, severe retardation of cartilage
cell differentiation, atrophy of osteoblasts, osteopenia, atrophy of bone
marrow cells, serous atrophy of bone marrow fat and severely stunted growth.
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- PMID: 3802832 [PubMed - indexed for MEDLINE]
-
- http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=
Retrieve&list_uids=3802832&dopt=Abstract
-
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- NY State And US Federal Fluoride Pollution
- Standards Do Not Protect Cattle Health
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- By Crissman JW, Maylin GA, Krook L.
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- Fluoride emissions from an aluminum plant in New York
State just west to the bridge to Cornwall, Ontario, Canada, are in compliance
with New York State and U.S. Federal standards. Ambient air fluoride virtually
never exceeds New York State standards. In a New York State dairy farm,
downwind from the aluminum plant about 40% of the time and with the fields
within 1300 to 2800 m from the plant, fluoride contamination of forage
ranged from 13 to 25 ppm, well below the 40 ppm which is the "tolerance"
level by National Academy of Sciences. Sixty-three of 82 dairy cattle on
that farm were slaughtered in 1979 because of chronic fluoride poisoning.
In the 19 cattle left on the farm in June, 1979, there was no dental fluorosis
in calves less than 4 months of age, mild to moderate dental fluorosis
in older calves and heifers and severe dental fluorosis in the 4 young
adult cattle. Ash fluoride in a stillborn calf was 280 ppm and in the oldest
cattle 2800; the increase was significantly correlated to age. It is concluded
that New York State and U.S. Federal standards for fluoride emissions,
New York State standards for ambient air fluoride and National Academy
of Sciences "tolerance" levels for ingestion of fluoride do not
protect cattle health.
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- PMID: 7408498 [PubMed - indexed for MEDLINE]
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