Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effect of Vitamin C Supplementation on the Performance and Eggshell Quality of Layers

비타민 C 첨가가-산란계의 생산성과 난각품질에 미치는 영향

  • 백인기 (중앙대학교 동물자원과학과) ;
  • 임희석 (중앙대학교 동물자원과학과) ;
  • 남궁환 (중앙대학교 동물자원과학과)
  • Published : 2002.06.01
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Abstract

An experiment was conducted to determine the effects of vitamin C supplementation on the performance and egg quality of layers. A total of 800 ISA Brown layers of 71 weeks old were assigned to one of the following diets containing 0, 3, 10, 50 or 100 ppm LG-vitamin C, 100ppm free ascorbic acid, 100 ppm Rovimix stay C-35 or 50 ppm LG-vitamin C supplemented with 100 ppm Zn methionine chelate. The feeding trial was conducted for flour weeks during the period of May to June when the average ambient temperature was $23.8^{\circ}C$ (5 :00 PM). Each treatment was replicated five times with 20 birds housed in 2 birds cage units. Vitamin C supplementation did not improve the overall performances (egg Production and egg Quality). Birds fed 100 ppm of LG vitamin C had the lowest egg Production while birds fed 100 ppm of Rovimix-35 had the lowest egg weight among birds fed different sources of vitamin C. Although supplementation of vitamin C over 50 ppm increased soft and broken egg Production, supplementation of 10 ppm LG vitamin C showed lowest soft and broken egg Production among all treatments. E99she11 thickness was highest in the treatment of 50 ppm LG vitamin C. In conclusion, supplementation of vitamin C at the level of 3 ~ 100 ppm did not significantly influence the laying performance and eggshell quality of laying hens under normal ambient(20 ~$26^{\circ}C$ ) condition.

비타민 C 첨가가 산란계의 생산성과 난각의 품질에 미치는 영향을 측정하기 위하여 사양실험을 실시하였다. 71주령된 산란계(ISA-Brown) 800수를 공시하여 LG 비타민 C를 각각 0, 3, 10, 50, 100 ppm, flee ascorbic acid 100 ppm, Rovimix stay C-35 100 ppm, vitamin C 50 ppm + Zn chelate (100 ppm in Zn)를 첨가한 8처리구에 5반복, 반복당 20수씩 2수용 케이지에 수용하여 난괴법으로 배치하였다. 사양실험은 5월 중순에 시작하여 4주간 실시하였으며, 이 기간 중 평균온도는 23,8$^{\circ}C$(오후 5:00 기준)이었다. 비타민 C의 첨가시 대조구에 비해 산란을, 난중 및 난각 품질의 개선효과는 없었다. 비타민 C첨가구들 중 100 ppm의 LG 비타민 C 첨가구, Rovimix stay C-35 첨가구, LG 비타민 C 50 ppm+zn chelate 첨가구의 산란율이 대조구에 비해 낮았으며, 난중은 대조구와 LG 비타민 C 100 ppm 첨가구가 가장 높았다. 50, 100 ppm LG 비타민 C 첨가와 Rovimix stay C-35첨가는 연파란율을 증가시켰다. 난각두께는 LG 비타민 C 첨가구 모두 대조구와 차이가 없었다 이상의 결과를 종합해 볼 때 외기 온도가20-$26^{\circ}C$인 환경하에서는 산란계 사료에 3-100 ppd수준의 비타민 C첨가는 산란계의 생산성 개선에 유의한 영향을 주지 못하였다.

Keywords

References

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