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[Juvenile goiter in a goat herd in northwest Germany].

A continuous increase in the circumference of the thyroid gland was observed in four goat kids (44.4%) of the breed of White German Goat between the third and fourth month in a herd comprising White German Goats and Coloured German Goats. Clinical, laboratory diagnostic and chemically analytical results have been obtained, illustrated and compared with the equivalent parameters from healthy control herds without pathological findings. The thyroidal secretion rate and the milk iodine content were highly significant reduced in the affected flock in comparison with the control group. The feed which was given to the affected group did not cover the nutritional requirement of pregnant, lactating and growing goats. At 40-50 mg/l, the nitrate content of the water was close to the tolerance of 50 mg/l. It can be deduced from the findings available that the case described above is a synergetic combination of a primary iodine deficiency, based on an inefficient iodine supply and of a secondary iodine deficiency resulting from a super elevated nitrate content of the drinking water.