Auffallend hohe Kupferkonzentrationen in Lebern von Mastkälbern : Aktuelle Messergebnisse und Versuch einer Bewertung.
Traduction en anglais : High amounts of copper in calf's livers. Recent data and estimation of potential health hazards.
At the Tierhygienisches Institut Freiburg (Veterinary State Institute), high amounts of copper in liver samples mainly originating from big farms had repeatedly been detected since January, 1994.
Most of the measured values were in the range of 300 to 500 mg copper per kg liver (fresh weight), with peak values up to 600 mg/kg (approx. 2400 mg/kg dry weight).
The amounts of copper found in calf's livers originating from small farms, as well as information given in the literature suggest, that « normal » copper concentrations in calf's liver range from 50 to 150 mg/kg (fresh wight).
In contrary, amounts above 200 mg/kg (800 mg/kg dry weight) indicate a chronic process of copper poisoning of the animal.
Therefore, as well as taking into account the prevention of cruelty to animals, upon exceeding this value (warning limit : 200 mg/kg) the farm involved should be declared « suspect ».
Regulatory limits for copper in vegetable food are given in the German « Rückstands-Höchstmengenverordnung » (10 to 50 mg/kg), but none for copper in food of animal origin.
Because there is no correlation between the color or superficial condition of a calf's liver and the amount of copper stored, possible consumer's health hazards must be taken into consideration.
Numerous cases with acute symptoms of poisoning upon intake of food or beverages containing increased amounts of copper have been reported, with doses from 15 mg already having provoked symptoms of acute gastritis.
Mots-clés Pascal : Animal élevage, Homme, Métabolisme, Allemagne, Europe, Foie, Veau, Boeuf, Artiodactyla, Ungulata, Mammalia, Vertebrata, Contamination, Cuivre, Teneur, Toxicité, Abats, Article synthèse
Mots-clés Pascal anglais : Farming animal, Human, Metabolism, Germany, Europe, Liver, Calf, Ox, Artiodactyla, Ungulata, Mammalia, Vertebrata, Contamination, Copper, Content, Toxicity, Offals, Review
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0224289
Code Inist : 002A35B05. Création : 199608.