Korean Journal of Poultry Science (한국가금학회지)

The Korean Society of Poultry Science (한국가금학회)
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Effect of LED Light Colors on Egg Production, Egg Quality and Reproductive Hormone Concentrations of Plasma and Oviduct in Brown Laying Hens Housed on Floor

LED 조명의 색이 평사 사육 갈색 산란계의 산란성적, 계란 품질 및 혈액과 난관 내 번식 호르몬 농도에 미치는 영향

  • Kim, Hee Na (College of Animal Life Sciences, Kangwon National University) ;
  • Ko, Han Seo (College of Animal Life Sciences, Kangwon National University) ;
  • Jang, Hyun Soo (College of Animal Life Sciences, Kangwon National University) ;
  • Kang, Yu Hyun (College of Animal Life Sciences, Kangwon National University) ;
  • Seo, Jee Soo (College of Animal Life Sciences, Kangwon National University) ;
  • Kang, Hwan Ku (Poultry Research Institute, National Institute of Animal Science, RDA) ;
  • Ohh, Sang Jip (College of Animal Life Sciences, Kangwon National University)
  • 김희나 (강원대학교 동물생명과학대학) ;
  • 고한서 (강원대학교 동물생명과학대학) ;
  • 장현수 (강원대학교 동물생명과학대학) ;
  • 강유현 (강원대학교 동물생명과학대학) ;
  • 서지수 (강원대학교 동물생명과학대학) ;
  • 강환구 (농촌진흥청 국립축산과학원 가금연구소) ;
  • 오상집 (강원대학교 동물생명과학대학)
  • Received : 2018.05.15
  • Accepted : 2018.10.23
  • Published : 2018.12.31
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Abstract

This study investigated the effect of LED light wavelength (color) on reproductive hormones and egg production of brown laying hens raised on floor. Red, blue, green and white colors of LED light were four treatments with four pens per treatment. One hundred forty four Hy-line brown laying hens (47 wks old) were allocated in a floor pen for six weeks trial. Egg production, egg quality, yolk cholesterol and hormones ($17{\beta}$-estradiol, progesterone) concentrations in plasma and oviduct were analyzed. Egg production of red group was higher (P<0.01) than that of green group. Haugh unit of eggs from red group was higher (P<0.01) than that of blue and green groups. Egg weight of green group was heavier (P<0.05) than that of red group. Shell of blue group was stronger (P<0.05) than that of red and white groups. Shell color of white group was browner (P<0.01) than that of blue and green groups. Yolk cholesterol of red group was higher (P<0.01) than that of others. Plasma $17{\beta}$-estradiol of red group was higher (P<0.05) than that of others at $3^{rd}$ week, but that of white group was highest (P<0.05) at $6^{th}$ week. Oviduct progesterone of green group was higher (P<0.01) than that of others. The result showed that the LED colors affect the reproductive hormone concentrations, egg production, egg weight and egg quality. This study suggested that red LED would be the most appropriate color for floor raising brown laying hens to sustain the egg production when it begins to decline with aging.

본 연구는 LED 조명의 색(파장)이 평사에서 사육하는 갈색 산란계의 생산성, 계란의 품질, 난황 콜레스테롤, 혈액 및 난관 $17{\beta}$-에스트라디올과 프로게스테론의 농도에 미치는 영향을 알아보기 위하여 수행하였다. 각각 적색, 청색, 녹색, 백색의 LED 조명색으로 총 4처리를 두었고, 47주령 갈색 산란계 144수를 처리당 4반복(칸), 반복당 9수로 배치한 후 6주간 시험을 진행하였다. 파장이 긴 적색 조명 그룹의 산란율이 가장 높았으며, 이 그룹의 혈중 $17{\beta}$-에스트라디올의 분비 농도도 가장 높았다. 반면 파장이 짧은 녹색 조명 그룹의 산란율이 가장 낮았으나, 난중은 가장 무거운 것으로 나타났다. 또한 LED 조명의 색은 난각 색, 난각 강도, 호우 유닛(HU)과 난황 내 콜레스테롤 함량에도 영향을 미치고 있음을 확인할 수 있었다. 따라서 본 연구를 통해 광원으로서 LED 조명의 경우 조명의 색(파장)이 산란 및 번식대사에 비슷하게 작용함을 확인하였다. 또한 이미 충분한 성 성숙이 완료되고, 산란율이 감소하기 시작하는 주령에도 광 자극이 산란 및 번식 대사에 영향을 미치고 있음을 알게 되었다. 본 연구의 결과로 산란성적, 계란 품질, 번식 호르몬 분비를 고려할 때, 평사에서 사육하는 47주령의 갈색 산란계에 적색 LED 조명이 가장 유리하다는 점을 제안할 수 있게 되었다.

Keywords

References

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