Dietary Effects of Varying Levels of Calcium and 25-hydroxycholecalciferol on Hatching Egg Production and Eggshell Quality in Aged Egg-Type Breeder Hens

칼슘의 수준별 급여 및 25-hydroxycholecalciferol의 사료 내 첨가가 종란 생산성 및 후기 난각질에 미치는 영향

  • Kim, Eun-Jib (Division of Animal Care, Cheonan Yonam College) ;
  • Ahn, Byoung-Ki (Animal Resources Research Center, College of Animal Bioscience and Technology, Konkuk University) ;
  • Kang, Chang-Won (Animal Resources Research Center, College of Animal Bioscience and Technology, Konkuk University)
  • 김은집 (천안연암대 동물보호계열) ;
  • 안병기 (건국대학교 동물생명과학대학 동물자원연구센터) ;
  • 강창원 (건국대학교 동물생명과학대학 동물자원연구센터)
  • Received : 2009.02.20
  • Accepted : 2009.08.18
  • Published : 2009.08.01


This experiment was conducted to investigate the effects of dietary calcium (Ca) and vitamin $D_3$ metabolite on eggshell quality and hatching egg production in aged egg-type breeder hens. A total of five hundred and forty 60-week-old Hy-Line Brown breeder hens were randomly allocated to nine treatments in a $3\times3$ factorial design to determine the effects of dietary Ca levels (3.3, 3.9, and 4.5%), combined with three levels of 25-hydroxycholecalciferol [25-$(OH)D_3$ 0, 75, and $150{\mu}g/kg$], on eggshell quality and egg production for 10 weeks. There were significant Ca and 25-$(OH)D_3$ effects (P<0.01) on egg production rate. There was a linear (P<0.01) increase in eggshell strength and thickness with increasing dietary Ca and 25-$(OH)D_3$ levels. Dietary 25-$(OH)D_3$ had a significant effect (P<0.05) on hatchability of egg although fertility was not influenced by dietarylevels of Ca and 25-$(OH)D_3$. Dietary Ca levels affected Ca content in tibia (P<0.05). These results indicated that relatively high levels of dietary Ca in combination with 25-$(OH)D_3$ had a beneficial effect on improving eggshell quality and reproductive performance in aged egg-type breeder hens.


Ca;25-hydroxycholecalciferol;Eggshell quality;Hatchability;Aged egg-type breeder hens


Supported by : 농림수산식품부


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