Determination of the percentage of the 125 I-lythyronine retention in resin (T3 Test) and the total tyroxin (T4 Test) in mongrels equine

Abstract

Thyroid function vas studied in mongrels equine y means of radioisotopic techniques "in vitro” 125 I-T3 and 125 I-T4 Tests. For this purpose 30 equine clinically healthful were selected and distributed in 3 groups of 10 animals. The first group was constituted my males, the 2nd by females and the last by geldings. Analyzing the results of T3 and T4 Tests we have not found statiscal significance for the 3 groups, although the averages were different between them. For the females the average of T3 Test we found 46.91% of marked hormone retention in resin and, for the T4 Test 1.95 mcg/100 ml of serum by the male, 42.50% for the T3 and 1.93 mcg/100 ml by the T4 Tests, finally by the geldings, the results obtained through T3 and T4 Tests, were, respectively, 40.43% and 1.89 mcg/100 ml. Having in mind the variance analysis results obtained in the 3 groups, we could collect data established for all animals, and then, we establish for the T3 Test the average 43.2% of marked hormone retention in resin, to a 95% coefficient between 41.32% and 45.24%. By the T4 Test, average of 1.93 mcg/100 ml of serum, and to a 95% confidence coefficient, between 1.64 to 2.22 mcg/100 ml.