Abstract
Blood samples from 16 female camels were collected at monthly intervals commencing from 60 d post. breeding until the last month of gestation. Two camels failed to conceive and two had unnoticed abortions. The average gestation period was 398±13 and 372±11 in camels bearing male and female fetus, respectively, with an overall mean of 383±9 d. Sera were analyzed for thyroxine (T 4) and triiodothyronine (T 3) by radioimmunoassay. Mean T 4 and T 3 concentrations varied from 76 to 116 ng/ml and 0.73 to 1.32 ng/ml, respectively, during various stages of gestation. In general, the T 4 and T 3 levels were higher during early pregnancy, with lowest values in the tenth month. T 4:T 3 ratio showed minor, nonsignificant fluctuations. Age of dam of sex of fetus had no effect on hormone levels. Similarly, hormone levels were not affected by failure of conception or by abortion.
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