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Effects of Feeding High and Low Ca Additive on Laying Performance and Egg Quality in Laying Hens

산란계 사료 내 칼슘의 수준별 첨가 급여가 생산성 및 계란 품질에 미치는 영향

  • Kang, Hwan-Ku (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Kang, Geun-Ho (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Kim, Dong-Wook (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Na, Jae-Cheon (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Yu, Dong-Jo (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Lee, Sang-Jin (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA) ;
  • Kim, Sang-Ho (Poultry Science Division, Livestock Resource Development, National Institute of Animal Science, RDA)
  • 강환구 (농촌진흥청 축산과학원 가금과) ;
  • 강근호 (농촌진흥청 축산과학원 가금과) ;
  • 김동욱 (농촌진흥청 축산과학원 가금과) ;
  • 나재천 (농촌진흥청 축산과학원 가금과) ;
  • 유동조 (농촌진흥청 축산과학원 가금과) ;
  • 이상진 (농촌진흥청 축산과학원 가금과) ;
  • 김상호 (농촌진흥청 축산과학원 가금과)
  • Published : 2008.12.31

Abstract

This experiment was carried out to investigate the effect of feeding limestone to high and low Ca layer diets on laying performance and eggshell quality in laying hens. Five hundred and twenty-eight HyLine brown layer allotted to six treatments consisting of high and low Ca diets. Limestone added to two kinds of basal diet with 1, 2 and 3 fold compared to conventional diet. Egg production was not different regardless Ca level and amount of added limestone in overall periods. However, the increment of egg observed in high Ca diet and added 10g limestone group during later period. Ca and limestone intake were increased as increasing feeding limestone. Eggshell strength and thickness were improved in high Ca consumption group. It was concluded that feeding Ca sources to conventional diets was helpful improving eggshell quality and reducing feed cost per egg mass by increasing proportion of Ca intake.

Keywords

References

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