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KMID : 1094020110280060581
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Journal of Veterinary Clinics
2011 Volume.28 No. 6 p.581 ~ p.585
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Changes of Blood Mg2+ and K? after Starvation during Molting in Laying Hens
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Go Hyeon-Kyu
Cho In-Gook
Lee Mun-Young
Park Hye-Min
Mun A-Reum
Kim Jeong-Gon
Lee Sei-Jin
Kim Gi-Beum
Kang Hyung-Sub
Kim Shang-Jin
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Abstract
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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 Mg2+, K? and P required by ATP synthesis. Since Mg2+ is a fundamental ion for normal metabolic processes and stress may not only increase in demands of Mg2+ but also produce consequence of Mg2+ 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 Mg2+ and K? accompanied by the changes of biochemical parameters relating to increased metabolic stress after molting. These results suggested that appropriate Mg2+ and K? supplements to laying hens could have beneficial effects during molting and subsequent refeeding that could produce a severe hypomagnesemia and hypokalcemia.
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KEYWORD
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laying hen, molting, starvation, hypermagnesemia, hypokalcemia
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