Effect of low and high ambient temperatures on metabolism of radioiodine by the lactating goat.
Two lactating goats given an oral dose of iodine-125 excreted 16.8, 52.5, and 9.8% of the dose into the milk, urine, and feces when the ambient temperature was 33 C. The thyroids contained about .7% of the oral dose. At 5 C only 2.6% of the radioiodine was in the milk, but 71.2% was in the urine, 18.1% in the feces, and about 10% in the thyroid. The reduced competition by the thyroid plus enhanced transfer of radioiodine from blood to milk at 33 C was responsible for the large transfer of radioiodine into milk at 33 C.
D000818:Animals; D004780:Environment, Controlled; D005243:Feces / Q000032:analysis; D005260:Female; D006041:Goats / Q000502:physiology*; D007455:Iodine / Q000378:metabolism*; D007457:Iodine Radioisotopes; D007774:Lactation / Q000187:drug effects; D008892:Milk / Q000378:metabolism*; D011247:Pregnancy; D013696:Temperature; D013961:Thyroid Gland / Q000378:metabolism
D007457:Iodine Radioisotopes; D007455:Iodine