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Asian-Australas J Anim Sci > Volume 12(3); 1999 > Article
Animal Reproduction and Physiology
Asian-Australasian Journal of Animal Sciences 1999;12(3): 354-357.
DOI: https://doi.org/10.5713/ajas.1999.354    Published online May 1, 1999.
Effect of Hypothyroidism on the Growth of Black Bengal Goats
P. S. P. Gupta, P. C. Sanwal, V. P. Varshney
Abstract
Hypothyroidism was induced in three age groups (8 months, 1 year and 2 years) of Blcak Bengal goats by administering thiourea subcutaneously for 30 days. From fourth day onwards the animals were observed to be in hypothyroid state. For 8 months age group, a control group of similar age was taken. For the 1 year and 2 years age groups there was no control group but the values obtained on the pre-treatment day were considered as control values. For confirming the establishment of hypothyroidism, peripheral plasma triiodothyronine (T3) and thyroxine (T4) were estimated in all the animals before and during the treatment period by radioimmunoassay. In the thiourea treated 8 months age group the T3 and T4 levels were significantly (p<0.001) lower than those in the control group during the treatment period. In all the thiorea treated groups the T3 and T4 levels observed during the treatment period were significantly (p<0.01) lower than the pre-treatment levels. A nonsignificant loss in the body weight was observed in all the thiourea treated groups whereas there was a significant growth in the control group of animals The study indicates that hypothyroidism has a negative effect on growth in goats.
Keywords: Hypothyroidism; Triiodothyronine; Thyroxine; Growth; Balck Bengal; Goats


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