Clinical and ultrasonographic finding on thyroid gland of rams during administration of kalium iodatum

Veterinarni Medicina 43, 1998, 179-185

The dynamics of triad values, general health condition, palpation and ultrasonographic findings on thyroid glands of rams with various form of clinical manifestation of goitre during therapy with kalium iodatum. An experiment included 9 breeding Merino rams at the age of 2.5 year with clinically developed goitre form. Experimental group (6 rams) was administered kalium iodatum in the feed mixture at a dose of 0.5 g/animal/day during 42 days. The control group without treatment consisted of three rams. Dynamics of body temperature had a similar trend in both the groups and differences at this parameter found between treated and untreated animals ranged within physiological boundaries. Breath and heart rates reached during the whole experiment statistically insignificantly higher values in experimental rams than in control rams. Increase in the weight of experimental group started to be manifested compared with initial values from 15th day and the highest weight was in these animals at the end of experiment (88.5 +/- 3.85 kg). The difference in weight between experimental and control rams was on day 42 of the experiment on the level of significance p < 0.05. A slight degree of apathy and inappetence was observed in all animals at the beginning of experiment. Improved intake of the feed in treated animals started to be manifested from day 8 but the improvement of the general health condition and reactions to external stimuli were found on day 21 day from the beginning of therapy. The changed palpation finding of thyroid gland (hypertrophy, solid-elastic consistency) during application of kalium iodatum was gradually modified and the size of thyroid gland was 2-4 x 1.5-2 cm on day 42 in different experimental animals. An original solid-elastic consistency of thyroid gland changed in treated rams to softer and soft. Symmetry, temperature, sensitivity and mobility of thyroid gland was not affected by therapeutic procedure. Heteroechogenic character of ultrasonographic examination of thyroid gland in experimental and control rams was characteristic at the beginning of experiment. Sonogramme showing almost homogenous echogeneity was typical for thyroid gland in treated rams on day 42 of the trial. This finding corresponded to modified thyroid gland with relatively high representation of colloid and lower representation of cells

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