Effects of Dietary Fe Sources on Productivity and Egg Composition in Laying Hens

유기태 철과 효모 철의 첨가가 산란계의 생산성 및 난 성분에 미치는 영향

  • Na S. J. (Department of Animal Resource & Science, Sunchon National University) ;
  • Uuganbayar D. (Department of Animal Resource & Science, Sunchon National University) ;
  • Oh J. I. (Department of Animal Resource & Science, Sunchon National University) ;
  • Sin I. S. (American Soybean Association) ;
  • Jung D. K. (RNA) ;
  • Kim H. Y. (Life Science, Kyunghee University) ;
  • Yang C. J. (Department of Animal Resource & Science, Sunchon National University)
  • Published : 2005.09.01

Abstract

This study was carried out to investigate the effects of Saccharomyces cerevisiae (wild yeast mutant), Saccharomyces cerevisiae hFeHLC (ferritin containgig yeast) and chelated Fe diets on the Productivity and egg qualify of laying hens. A total of 245 'Brown Tetra' layers 35 weeks aged was randomly alloted to seven dietary treatments : 1) control diet no iron added, 2) diet supplemented $0.1\%$ wild yeast mutant (YM03), 3) diet supplemented $1.0\%$ wild yeast mutant (YM03), 4) diet supplemented $0.1\%$ ferritin with yeast (YF04), 5) diet supplemented $1.0\%$ ferritin with yeast (YF04), 6) diet supplemented $0.01\%$ chelated Fe and 7) diet supplemented $0.1\%$ chelated Fe. The egg Production rate was significantly increased in layers 134 Fe supplemented diets (p<0.05). Egg weight was significantly reduced in layers fed $0.1\%$ chelated Fe diet (P<0.05). Fe content of egg yolk was significantly increased in $1.0\%$ YF04 and $0.1\%$ chelated Fe treatments (P<0.05). There were no significant differences in shape index, albumin index and yolk index of eggs of layers fed diets Fe supplementation (P>0.05). The haugh unit of eggs was significantly increased in layers fed YM03, YF04 and chelated Fe supplemented diets (p<0.05). TBA value of egg was significantly increased in different iron Fe treatments except of $0.1\%$ YM03 (P<0.05). The yolk cole. of eggs was significantly increased in $1.0\%$ YF04 diet (P<0.05).

본 연구는 유기태 철과 효모 철의 첨가가 산란계의 생산성 및 난 성분에 미치는 영향을 알아보기 위하여 시험을 실시하였다. 공시동물은 갈색 테트라 산란계를 이용하였으며, 35주령 245수를 총 7처리 5반복 반복당 7수씩 임의배치 하여 9주간 사양시험을 실시하였다. 처리구는 1) 대조구, 2) YM03 $0.1\%$, 3) YM03 $1.0\%$, 4) YF04 $0.1\%$, 5) YF04 $1.0\%$, 6) chelated Fe $0.01\%$ 및 7) chelated Fe $0.1\%$로 나누었다. 산란율은 YF04 $1.0\%$ 처리구가 $97.09\%$으로 가장 높았으며, 대조구에 비해 통계적인 유의차를 보였다(P<0.05). 난중은 chelated Fe $0.1\%$가 가장 낮게 나타났다(P<0.05). 난황내 Fe 함량은 YF04 $1.0\%$ 처리구와 chelated Fe$0.1\%$처리구가 증가하여 통계적인 차이를 보였다(P<0.05). 난형태, 난백색, 난황지수는 철 처리구들이 대조구에 비해 감소하는 경향을 보였으나 통계적인 유의차는 보이지 않았다 (P>0.05). 그러나 호유닛은 YM03 처리구, YF04 처 리구 및 chelated Fe 처리구에서 증가하여 유의차를 보였다(P<0.05). 산패도(TBA)은 YM03 $1.0\%$ 처리구가 3.98로 가장 높았으며 대조구가 2.85으로 가장 낮았다(P<0.05). 관능검사 결과 외형은 YF04 $1.0\%$ 처리구가 3.64으로 높게 나타났으며 YM03 $0.1\%$ 처리구가 3.00으로 가장 낮았다(P>0.05). 색은 YF04 $1.0\%$ 처리구가 4.00으로 높았으며 YF04 $0.1\%$ 처리구는 2.93으로 가장 낮았다(P<0.05). 다즙성은 YF04 $1.0\%$ 처리구가 3.50으로 가장 높게 나타났으며 YM03 $0.1\%$와 YM03 $1.0\%$ 처리구가 각각 3.07로 낮았다 (P>0.05).

Keywords

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