Vitamin A concentration in calf livers: results of a field survey
1998
Kessler, J. | Morel, I. (Eidg. Forschungsanstalt fuer Nutztiere, RAP, Posieuxn (Switzerland))
In five slaughterhouses across Switzerland, 40 calf livers were bought from the slaughter chain to determine vitamin A content. An additional investigation with ten calves fattened at the research station with 12'600 IU vitamin A per kg of feed dry matter was carried out at the same time. Vitamin A concentration of the 40 slaughterhouse calf livers averaged 381 +/-285 IU per g of liver on a fresh matter basis. The contents ranged from 119 IU to 1698 IU per g of liver. In comparison to an earlier survey (1134 +/- 453 IU/g liver), the vitamin A content in calf livers decreased considerably. The average vitamin A content in the livers of the ten calves fattened at the research station reached 257 +/- 45 IU per g fresh liver. The finding supports the conclusion that a dietary vitamin A supply of 12'600 IU per kg of feed dry matter does not result in a vitamin A accumulation in the liver which is undesirable from a human dietetics point of view.
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