Iodine concentration in milk of sheep and goats from farms in South Bohemia
2001
Travnicek, J. | Kursa, J. (Jihoceska Univ., Ceske Budejovice (Czech Republic). Zemedelska Fakulta)
Iodine concentration was determined in milk samples collected from 60 sheep on 10 farms and from 94 goats of 64 farmers. The animals were grazed in the summer and fed hay in the winter. Pregnant and lactating sheep received daily 0.2 to 0.4 kg of cereal meal. The iodine concentration in the hay fed to the sheep and goats ranged from 20.5 to 162.4 microg per 1 kg dry matter. The mean iodine concentration in sheep milk was 105.5 microg/L. The corresponding value for the 4 farms where the sheep had access to mineral licks (35 mg iodine per 1 kg) was 243.3 +/- 87.2 microg/L and for the rest of the 6 farms 47.9 +/- 27.8 microg/L. Mean iodine concentrations in goat milk (31.6 microg/L in 1998 and 63 microg/L in 1999) were indicative of iodine deficiency. The corresponding value for the 17 goats receiving iodised salt was 142.1 +/- 102.6 microg/L and for the remaining goats 19.3 +/- 13.2 microg/L. The mean iodine concentrations in goat milk on 3 farms on which neonatal goitre in kids was diagnosed ranged from 8.5 to 23.3 microg/L.
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