Changes of Blood $Mg^{2+}$ and $K^+$ after Starvation during Molting in Laying Hens

환우(換羽, molting)에 의한 절식 후 산란계의 혈액 $Mg^{2+}$$K^+$ 변동

  • Go, Hyeon-Kyu (College of Veterinary Medicine, Chonbuk National University) ;
  • Lee, Sei-Jin (Korea Basic Science Institute Jeonju Center) ;
  • Cho, In-Gook (College of Veterinary Medicine, Chonbuk National University) ;
  • Lee, Mun-Young (College of Veterinary Medicine, Chonbuk National University) ;
  • Park, Hye-Min (College of Veterinary Medicine, Chonbuk National University) ;
  • Mun, A-Reum (College of Veterinary Medicine, Chonbuk National University) ;
  • Kim, Jeong-Gon (College of Veterinary Medicine, Chonbuk National University) ;
  • Kim, Gi-Beum (Korean Zoonoses Research Institute, Chonbuk National University) ;
  • Kim, Jin-Shang (Korean Zoonoses Research Institute, Chonbuk National University) ;
  • Kang, Hyung-Sub (Korean Zoonoses Research Institute, Chonbuk National University) ;
  • Kim, Shang-Jin (Korean Zoonoses Research Institute, Chonbuk National University)
  • 고현규 (전북대학교 수의과대학) ;
  • 이세진 (한국기초과학지원연구원전주센터) ;
  • 조인국 (전북대학교 수의과대학) ;
  • 이문영 (전북대학교 수의과대학) ;
  • 박혜민 (전북대학교 수의과대학) ;
  • 문아름 (전북대학교 수의과대학) ;
  • 김정곤 (전북대학교 수의과대학) ;
  • 김기범 (전북대학교 인수공통전염병연구소) ;
  • 김진상 (전북대학교 인수공통전염병연구소) ;
  • 강형섭 (전북대학교 인수공통전염병연구소) ;
  • 김상진 (전북대학교 인수공통전염병연구소)
  • Accepted : 2011.12.18
  • Published : 2011.12.31

Abstract

Either the fasting during natural molting or the starvation in induced molting would be a severe metabolic stress to laying hens. The metabolic stress during starvation and subsequent refeeding syndrome could lead to unbalance of mineral homeostasis, including $Mg^{2+}$, $K^+$ and P required by ATP synthesis. Since $Mg^{2+}$ is a fundamental ion for normal metabolic processes and stress may not only increase in demands of $Mg^{2+}$ but also produce consequence of $Mg^{2+}$ deficiency, we investigated the changes of blood ionized and total ions related to starvation during molting in laying hens. We founded the significant decrease in blood $Mg^{2+}$ and $K^+$ accompanied by the changes of biochemical parameters relating to increased metabolic stress after molting. These results suggested that appropriate $Mg^{2+}$ and $K^+$ supplements to laying hens could have beneficial effects during molting and subsequent refeeding that could produce a severe hypomagnesemia and hypokalcemia.

자연적 혹은 인위적 환우 기간의 절식은 산란계에서 심각한 대사성 스트레스가 될 수 있다. 절식 그리고 필수적으로 수반되는 사료 재급여 증후군의 대사성 스트레스는 ATP 생성과 밀접한 $Mg^{2+}$, $K^+$과 P 등의 무기염류 불균형을 야기할 수 있다. $Mg^{2+}$은 생체 대상과정에서 필수적인 무기염류이며 스트레스는 생체 $Mg^{2+}$ 요구량을 증가시킬 뿐만 아니라 $Mg^{2+}$ 결핍을 야기할 수 있기 때문에 산란계에서 환우 기간의 절식에 관련된 혈액내 이온의 이온화 농도 및 결합형을 포함한 총농도의 변동을 관찰하였다. 환우 후에 대사성 스트레스와 관련된 생화학 인자의 변화와 수반하여 혈액내 $Mg^{2+}$$K^+$의 감소가 관찰되었다. 따라서 환우 기간의 절식 및 사료 재급여 증후군은 심각한 저마그네슘혈증 및 저칼륨혈증을 야기할 수 있으므로 환우 그리고 재급여 과정에서 $Mg^{2+}$$K^+$의 투여가 권장된다.

Keywords

References

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