Journal of Embryo Transfer (한국수정란이식학회지)

The Korean Society of Embryo Transfer (한국수정란이식학회)
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Alteration in Concentrations of Blood Urea Nitrogen and Sex Steroid Hormone in Korean Cattle with Reproductive Disorders

번식 장애 한우의 혈액요소태질소 및 성 스테로이드 호르몬 농도 변화

  • Choe, Chang-Yong (Animal Genetic Resources Station, National Institute of Animal Science, RDA) ;
  • Son, Dong-Soo (Animal Genetic Resources Station, National Institute of Animal Science, RDA) ;
  • Cho, Sang-Rae (Animal Genetic Resources Station, National Institute of Animal Science, RDA) ;
  • Kim, Hyun-Jong (Animal Genetic Resources Station, National Institute of Animal Science, RDA) ;
  • Choi, Sun-Ho (Animal Genetic Resources Station, National Institute of Animal Science, RDA) ;
  • Kang, Da-Won (Department of Physiology, College of Medicine and Institute of Health Sciences, Gyeongsang National University)
  • 최창용 (농촌진흥청 축산과학원 가축유전자원시험장) ;
  • 손동수 (농촌진흥청 축산과학원 가축유전자원시험장) ;
  • 조상래 (농촌진흥청 축산과학원 가축유전자원시험장) ;
  • 김현종 (농촌진흥청 축산과학원 가축유전자원시험장) ;
  • 최선호 (농촌진흥청 축산과학원 가축유전자원시험장) ;
  • 강다원 (경상대학교 의과대학 생리학교실)
  • Published : 2008.03.31
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Abstract

The objective of this study is to investigate the changes in concentrations of blood urea nitrogen (BUN) and sex steroid hormones, such as estrogen, progesterone, and testosterone in Korean cattle (Hanwoo) with reproductive disorders and to examine the relationship between BUN and body condition score (BCS) in Hanwoo. The concentration of BUN was 16.2 mg/dl, 17.8 mg/dl, 15.1 mg/dl, 17.9 mg/dl, and 28.3mg/dl in pregnancy, repeat breeding, follicular cyst, luteal cyst, and ovarian atrophy, respectively. In Hanwoo with BCS $2.0{\sim}2.9$, $3.0{\sim}3.5$ and $3.6{\sim}4.0$, the concentration of BUN was 15.8 mg/dl, 17.0 mg/dl, and 17.6 mg/dl, respectively. Fluoroimmunoassay showed that serum estrogen and progesterone levels were decreased in reproductive disorders Hanwoo, such as ovarian atrophy, endometritis, and weak estrus. The testosterone level was significantly decreased in Hanwoo with reproductive disorders compared to that in pregnant Hanwoo ($0.02{\sim}0.03\;ng/ml$ vs 0.13 ng/ml, p<0.05). The progesterone and estrogen concentrations in follicular fluid obtained from ovary with follicular cyst were significantly higher (p<0.05) than those in normal follicle fluid. These results show that there is no relationship between BUN and BCS in Hanwoo, and the concentration of sex steroid hormone in serum and follicular fluid are changed in reproductive disorders Hanwoo.

Keywords

References

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