Correlation Between Thyroid Activity and Body Gain in Chicken

Kwun, Jong Kuk; Sung, Jai Ki; Choi, Hyeong Jong

Korean Journal of Veterinary Research 1970;10(1):1-4.

Jong Kuk Kwun, Jai Ki Sung, Hyeong Jong Choi

Department of Veterinary Medicine College of Agriculture, Seoul National University

닭의 갑상선기능(甲狀腺機能)과 성장률(成長率)과의 상관관계(相關關係)

권종국, 성재기, 최형종

서울대학교 농과대학 수의학과

Abstract

Experiments were carried out in order to study the relationship of thyroid activity to growth potentiality in chicken. Further work was also performed to determine thyroid secretion rate and body gain of the different sexes. A correlation coefficient of 0.241 in the male and 0.237 in the female were obtained between daily gains and daily thyroid $^{131}I$ out put rate in the chicken. The correlation was not statistically significant, but the chicken with a lower thyroid activity tended to gain faster than those with a higher thyroid activity. The average daily gain of the female(12.13 gram) was significantly higher than the male (9.28 gram). The average daily thyroid secretion rate of male tended to have a higher rate, but it was not statistically significant.