Journal of Embryo Transfer (한국수정란이식학회지)

The Korean Society of Embryo Transfer (한국수정란이식학회)
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Analysis of Coat Color Changes and Hormone Levels in Korean Brindle Cattle

칡소의 모색 발현과 호르몬 변화와의 상관관계 분석 연구

  • Lee, Hae-Lee (Livestock Experiment Station, Jeollabuk-do Institute of Livestock and Veterinary Research) ;
  • Park, Jae-Hee (Department of Animal Sciences, College of Agriculture and Life Science, Institute of Molecular Biology and Genetics, Chonbuk National University) ;
  • Kim, Yong-Su (Livestock Experiment Station, Jeollabuk-do Institute of Livestock and Veterinary Research) ;
  • Kim, Jong Gug (Department of Animal Sciences, College of Agriculture and Life Science, Institute of Molecular Biology and Genetics, Chonbuk National University)
  • 이해이 (전라북도축산위생연구소 축산시험장) ;
  • 박재희 (전북대학교 동물자원과학과/유전공학연구소) ;
  • 김용수 (전라북도축산위생연구소 축산시험장) ;
  • 김종국 (전북대학교 동물자원과학과/유전공학연구소)
  • Received : 2015.03.13
  • Accepted : 2015.03.25
  • Published : 2015.03.31
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Abstract

The aim of this study was to determine the relationship between the coat color appearance of Korean brindle cattle and the changes of relevant hormone levels that may affect the hair pigmentation during different stages of growth and maturation. In mature cattle, levels of both ACTH and DHEA in Korean brindle cattle with brown color were significantly higher than those with black color (p<0.05). Levels of ${\alpha}$-MSH in Korean brindle cattle with whole brindle ($${\geq_-}50%$$) color were significantly higher than those with brown color (p<0.05). In calves of Korean brindle cattle at 2 to 6 months, the concentration of estradiol was significantly higher in calves with whole brindle color than those with part brindle color (p<0.05), when the coat color was confirmed. After 6 month of coat color confirmation, levels of testosterone and ACTH increased in calves with part brindle color and were significantly higher than those with whole brindle color (p<0.05). In calves of Korean brindle cattle at 1 or 2 months, there were no significant differences in hormone levels of estradiol, ACTH, DHEA and ${\alpha}$-MSH between the calves with brindle color and brown color, except estradiol before brindle color appearance. Changes of relevant hormone levels at different stage of growth and maturation may affect the pigmentation of coat during the development of cattle. In addition to the current study correlating the different coat colors with relevant hormone levels, investigation of the coat color associated genes expressed in Korean brindle cattle may further clarify the mechanisms of coat color changes during their development.

Keywords

References

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