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Abstract

An experiment was conducted to produce eggs enriched with vitamins $D_3$, K and iron in eggs. Six hundred 97-wk-old ISA Brown force molted hens were allocated to completely randomized block arrangement of six dietary treatments: T1; control (C), T2; C+4,000 IU vitamin $D_3$+2.5 mg vitamin K+100 ppm Fe, T3; C+8,000 IU vitamin $D_3$+5.0 mg vitamin K+100 ppm Fe, T4; C+12,000 IU vitamin $D_3$+7.5 mg vitamin K+100 ppm Fe, T5; C+16,000 IU vitamin $D_3$+10.0 mg vitamin K+100 ppm Fe, T6; C+20,000 IU vitamin $D_3$+12.5 mg vitamin K+100 ppm Fe. Fe was supplemented with Fe-methionine. Each treatment consisted of five replicates of ten cages with two birds per cage. Egg production and egg weight were highest in T2 and incidence of soft and broken egg was highest in T6. Haugh unit was not different among treatments although it tended to be increased as dietary vitamins $D_3$ and K increased. Eggshell strength was not different among treatment. Concentrations of vitamin $D_3$ and K in egg yolk increased and plateaued approximately 20 days after feeding supplemented diets. The level of these vitamins peaked at 12,000 IU/kg vitamin $D_3$ and 7.5 mg/kg vitamin K supplementation and then decreased at the higher than these supplementation levels. The peak concentrations of vitamin $D_3$ and vitamin K were 4.6 times and 4.8 times greater than the control, respectively. Supplementary Fe also increased Fe content in egg yolk. It is concluded that vitamin $D_3$ and K in eggs can be effectively enriched by proper supplementation time and level of these vitamins.

참고문헌 (14)

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  6. Eisen, E. J., B. B. Bohren and H. E. Mckean. 1962. The Haugh Units as a measure of egg albumen quality. Poult. Sci. 41:1461-1468. 
  7. Bethke, R. M., P. R. Rechord, O. H. M. Wildler and C. H. Kick. 1936. Effect of different sources of vitamin D on the laying bird. II. Storage of vitamin D in the egg and chick and mineral composition of the manure embryo. Poult. Sci. 15:336-344. 
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  9. Naber, E. C. 1993. Modifying vitamin composition of eggs: A review. App. Poult. Sci. 4:385-393. 
  10. Park, S. W., H. Namkung, H. J. Ahn and I. K. Paik. 2004. Production of iron enriched eggs of laying hens. Asian-Aust. J. Anim. Sci. Vol 17(12):1725-1728. 
  11. Keshavarz, K. 1996. The effect of different levels of vitamin C and cholecalciferol with adequate or marginal levels of dietary calcium on performance and eggshell quality of laying hens. Poult. Sci. 75:1227-1235. 
  12. AOAC. 1997. Official method of analysis. 16th ed. Association of official chemists. Washington, DC. 
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  14. SAS Institute. 1985. $SAS^{\circledR}$ User's Guide: Statistics. 6 Ed. SAS institute Inc., Cary, NC. 

이 논문을 인용한 문헌 (2)

  1. 2007. "" Asian-Australasian journal of animal sciences, 20(2): 237~244 
  2. 2008. "" Asian-Australasian journal of animal sciences, 21(1): 103~106 

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