Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Influence of Dietary Supplemental Germanium Colloid on Egg -Quality and Immune Response in Layers

산란계 사료에 게르마늄의 첨가가 계란품질 및 면역반응에 미치는 영향

  • 홍종욱 (단국대학교 동물자원과학과) ;
  • 김인호 (단국대학교 동물자원과학과) ;
  • 권오석 (단국대학교 동물자원과학과) ;
  • 이상환 (단국대학교 동물자원과학과) ;
  • 민병준 (단국대학교 동물자원과학과) ;
  • 이원백 (단국대학교 동물자원과학과)
  • Published : 2002.03.01
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Abstract

This study was conducted to investigate the effects of feeding germanium colloid(GC) on the egg quality and immune response in 1aying hens. One hundred forty four layers, 32-wk-old ISA Brown, were used in a 40-d experimental assay with a 7-d adjustment Period. Dietary treatments included 1) control (basal diet; CON), 2) 0.5ppm GC (basal diet + 0.Sppm germanium), 3) 1.0ppm GC (basal diet + 1.0 ppm germanium) . For overall Period, hen-day e99 Production tended to be increased as the concentration of GC in the diets was increased with significant difference (linear effect, p<0.01) . Laying hens fed 0.5ppm GC diet were significantly (P<0.01) lower in egg shell breaking strength than laying hens fed CON or 1.0 ppm GC diets. Egg shell thickness and yolk color were not influenced by GC supplementation. Laying hens fed 1.0ppm GC diet were h19her in egg yolk Index than laying hens fed CON and 0.5ppm GC diets with significant difference (quadratic effect, p<0.02) . As adding level of germanium colloid increased in the diets, the total serum cholesterol and triglyceride tended to be decreased. However, the effect of GC supplementation did not show significant in the levers of total serum cholesterol and triglyceride. Also, HDL- and LDL+VLDL-cholesterol in serum were not statistically different among the treatments. Red blood cell and white blood cell count in blood tended to be increased as the concentration of GC in the diets was increased with significant difference (P<0.01) . Hematocrit concentration in blood was successfully Increased by supplementation of GC (P<0.01) . In conclusion, although egg quality was not influenced by GC supplementation, supplementing GC Improved Immune status in laying hens.

본 연구의 목적은 게르마늄을 함유한 비특이 면역증가제를 산란계에 급여하였을 때 계란품질 및 면역반응에 미치는 영향을 조사하기 위하여 실시하였다. 사양시험은 32주령 ISA Brown 산란계 144수를 공시하였으며, 처리구로는 대조구(CON; 기초사료), 대조구 사료 내 게르마늄이 0.5 ppm(GC0.5), 1.0ppm(GC1.00) 처리구로 구성되었다. 총 40 일간의 사양시험 기간동안, 난각강도에 있어서는 GC0.5처리구가 대조구 및 GC10. 처리구보다 유의적으로 낮게 평가되었다(quadratic effect, p<0.01). 난각두께에 있어서는 대조구와 처리구간에 통계적으로 유의적인 차이는 보이지 않았다. 난황색은 대조구와 처리구간에 유의적인 차이를 보이지 않았으며, 난황계수에 있어서는 GC1.0 처리구가 다른 처리구와 비교하여 높게 평가되었다(quadratic effect, P<0.02). 혈청내 총 콜레스테롤 및 중성지질 함량에 있어서는 GC의 첨가수준이 증가함에 따라 감소하는 경향을 나타내었으나 유의적인 차이는 보이지 않았다. 또한, 혈청 내 HDL 및 LDL+VLDL 콜레스테롤 함량에 있어서는 GC0.5 처리구가 다른 처리구와 비교하여 가장 낮게 평가되었으나 유의적인 차이는 보이지 않았다. 혈중 내 적혈구 및 백혈구 농도는 비특이 면역증가제의 첨가수준이 증가함에 따라 유의적으로 증가하는 경향을 나타내었다(linear effect, p<0.01) . 혈중내 hematocrit 함량은 대조구와 비교하여 게르마늄 용질액을 첨가함에 따라 유의적으로 증가하는 경향을 보였다(linear effect, p<0.01). 결론적으로, 산란계 사료내 GC의 첨가는 난각특성에는 영향을 미치지 못하는 것으로 사료되나, 산란계의 면역활성화를 유도할 수 있을 것으로 사료된다.

Keywords

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