Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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The Effects of the Glutinicus Supplementation on Performance, Eggshell and Egg Yolk Color of Layers

산란계 사료에 Glutinicus 첨가가 산란 생산성, 난각 및 난황 색도에 미치는 영향

  • Jung, B.Y. (Department of Animal Science and Technology, Chung-Ang University) ;
  • Lim, H.S. (Department of Animal Science and Technology, Chung-Ang University) ;
  • Paik, I.K. (Department of Animal Science and Technology, Chung-Ang University)
  • 정병윤 (중앙대학교 동물자원과학과) ;
  • 임희석 (중앙대학교 동물자원과학과) ;
  • 백인기 (중앙대학교 동물자원과학과)
  • Published : 2004.12.31
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Abstract

An experiment was conducted to determine the effects of dietary supplementation of the yeast Rhodotorula glutinis(Glutinicus) on the performance and egg quality of layers. A total of 360 ISA Brown layers at 72 weeks old were assigned to one of the following 6 diets: control, 25 ppm$\beta$-carotene, 0.50%0, 1%0, 2% and 4% Glutinicus supplemented diets. Each treatment was replicated three times with 20 birds housed in 2 bird cage units. Glutinicus supplementation at the level of 0.5% significantly(p < 0.05) improved egg production and FCR Soft and broken egg production rate decreased as the level of Glutinicus supplementation increased. Eggshell strength was highest in 4 % Glutinicus supplementation. Egg yolk color increased linearly as the level of Glutinicus supplementation increased up to 2% of the diet. It was concluded that Glutinicus supplementation at the level of 0.5% can be recommended for the improvement of egg production while 2.0% can be recommended for egg yolk pigmentation.

본 연구는 사료 내 Rhodotorula glutinis(Gluti- nicus) 효모의 첨가가 계란의 생산성, 난각 및 난황 색도에 미치는 영향을 구명하고자 72주령의 갈색 산란계 ISA Brown 360수를 공시하여 control, $\beta$-carotene 25ppm, 0.5%, 1%, 2% 그리고 4% Glutinicus로 처리하여 시험하였다. 각각의 처리구는 3반복, 반복당 20수씩, 한 케이지당 2수씩 배치하여 6주간 사양시험을 실시하였다. Glutinicus 첨가구 중 0.5% 수준(p<0.05)에서 사료요구율(FCR)과 계란 생산성 개선이 유의하게 나타났으며 연파란 발생율은 Glutinicus 첨가량 수준이 증가함에 따라서 감소하였다. 난각 강도는 Glutinicus 4% 첨가 시에 가장 높았으며, 난황 색도는 Glutinicus가 증가함에 따라서 2% 첨가까지 점차적으로 증가하였지만 Glutinicus 4% 첨가구와 2% 첨가구와는 유의적으로 차이가 없었다. 결론적으로 Glutinicus 0.5% 첨가가 계란 생산성을 증진시킬 수 있고, 난황 착색을 위해서는 Glutinicus 2% 첨가가 효과적이었다.

Keywords

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