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Change of Concentration of Hormones and Metabolic Materials in Serum by Age in Hanwoo  

전기준 (농촌진흥청 축산기술연구소)
김종복 (강원대학교 동물자원과학대학)
최재관 (농촌진흥청 축산기술연구소)
이창우 (농촌진흥청 축산기술연구소)
황정미 (강원대학교 동물자원과학대학)
김형철 (강원대학교 동물자원과학대학)
양부근 (강원대학교 동물자원과학대학)
박춘근 (강원대학교 동물자원과학대학)
나기준 (농촌진흥청 축산기술연구소)
Publication Information
Journal of Embryo Transfer / v.18, no.3, 2003 , pp. 215-225 More about this Journal
Abstract
This study was carried out to investigate the change of blood compositions by age in Hanwoo, and a total of 866 of Hanwoo, which consisted with 638 of steer and 228 of bulls, were used to measure serum concentrations. A multiple regression equation was estimated with collection age and blood composition as independent and dependent variables, respectively. Complicated regression equations for blood compositions in steer and bulls were IGF-I(cubic), calcium (linear), and IP(linear). Linear and cubic equations were fitted to testosterone in steer and creatinine in bulls, respectively. A cubic equation in steer and linear equation in bulls were fitted to HDLC. Equations of quadratic in steer and cubic in bulls were fitted to concentration of triglyceride, globulin, and A/G ratio. BUN was fitted by equations of cubic in steer and quadratic in bulls. TP and albumin were fitted by equations of quadratic in steer and linear in bulls. A cubic regression equation did not explain the change of cortisol by age in steer and bulls. A cubic regression equation did explain the change of glucose by age in steer, but not in bulls. Higher R-square values (R-SQUARE>0.1) were estimated to IGF-1, albumin, creatinine, Inorganic phosphorous(IP) and HDLC in steer, and testosterone, IGF-I, TP, albumin, glucose, creatinine, IP, and HDLC in bulls for the fitted regression equations of blood compositions. Therefore, IGF-I, albumin, creatinine, IP, and HDLC were regarded as comparatively large variation by age in steer and bulls.
Keywords
metabolic materials; serum; Hanwoo;
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