Consequences of iodine deficiency in cattle in some regions of the Czech Republic
1997
Kursa, J. | Kroupova, V. | Kratochvil, P. | Travnicek, J. (Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta) | Herzig, I.
Data on prevalence of clinical symptoms of iodine withdrawal in calves according to the occurrence of goitre are presented. Iodine concentration in milk of dairy cows with occurrence of goitre ranged from 10 to 30.8 microg.l** (-1) and testifies the deficient iodine intake in cows during pregnancy. These levels are significantly lower compared with iodine content in milk of cows without finding of goitre in their progeny (on average 40 microg.l** (-1)). Origin of iodopenia with subsequent morbidity is presented in connection with the administration of concentrates and cereal meals of exclusively local provenance without enrichment by iodine. Iodine withdrawal was deepened by higher contents of nitrates in feeds and potable water and presence of plants of the cabbage family in feed rations.
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