Iodine in milk and meat of dairy cows fed different amounts of potassium iodide or ethylenediamine dihydroiodide.
J Dairy Sci
; 73(2): 398-405, 1990 Feb.
Article
em En
| MEDLINE
| ID: mdl-2329204
ABSTRACT
Relationships between I intake by lactating Holstein cows and iodine concentrations in milk and meat were investigated. Six treatment groups with seven cows assigned to each treatment were fed a basal diet containing .8 mg I/kg alone or supplemented with I at 1, 2, or 4 mg/kg in four 5-wk periods. Basal alone was fed in the first and third periods and the I supplement was potassium iodide in the second period and ethylenediamine dihydroiodide in the fourth period. Iodine concentrations in milk increased with each increase in dietary I from 205 ng/ml for basal periods to 404, 477, and 757 ng/ml when 1, 2, or 4 mg/kg I was fed as potassium iodide; and 467, 535, and 869 ng/ml when 1, 2, or 4 mg/kg I was fed as ethylenediamine dihydroiodide. Concentrations of I in skeletal muscle after the fourth period were not affected by 2 mg/kg I and only increased from 166 to 199 ng/g when supplemental I was 4 mg/kg. Moderate changes in dietary I are quickly reflected in milk I, but I in meat is relatively stable.
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Base de dados:
MEDLINE
Assunto principal:
Bovinos
/
Leite
/
Iodetos
/
Iodo
/
Carne
/
Anti-Infecciosos
Idioma:
En
Ano de publicação:
1990
Tipo de documento:
Article