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Lycopene의 첨가 급여가 계란의 품질에 미치는 효과

Effects of Lycopene as a Feed Additive on the Quality of Chicken Eggs

  • 김교식 (단국대학교 생명자원과학대학 동물자원학과) ;
  • 홍지애 (단국대학교 생명자원과학대학 동물자원학과) ;
  • 김정우 (단국대학교 생명자원과학대학 동물자원학과)
  • Kim, K.S. (Deparment of Animal Science & Resources, Dankook University) ;
  • Hong, J.A. (Deparment of Animal Science & Resources, Dankook University) ;
  • Kim, J.W. (Deparment of Animal Science & Resources, Dankook University)
  • 발행 : 2008.09.30

초록

산란계 사료에 lycopene을 첨가 급여하여 생산된 계란의 난황 중에 전이된 lycopene의 함량을 급여 기간별로 확인하고, lycopene 함유 계란의 난황색, 난중, 난각 강도, 난황고, 난백고, 난황 직경, 난황 계수와 Haugh Unit(호우 유닛) 등 계란의 각종 품질 특성과 이들 계란의 장기 보존에 따른 품질의 변화상을 조사하여 다음과 같은 결과를 얻었다. 1. 결과 lycopene 처리군의 계란 중 lycopene 농도는 난황액 1 gram 당 각각 약 1.56 ${\mu}g$과 1.57 ${\mu}g$ 이었으며, 대조군의 계란에는 lycopene의 함량이 없는 것으로 나타났다. 2. 사양 시험 2주경의 처리군의 난황 중 lycopene 함량 수준(23.4 ${\mu}g$)은 4주경의 수준(23.6 ${\mu}g$)과 유사하였다. 즉, 동일수준의 lycopene 첨가 사료를 지속적으로 급여하여도 난황 내 lycopene의 함량은 급여 기간의 경과에 따라 누적적으로 증가되지 않는 것으로 나타났다. 3. Lycopene 첨가군의 난황색 (P<0.01)은 대조군에 비하여 유의적으로 높은 수치를 보였다. 이외에도 처리군간에 통계적 유의성은 인정되지 않았으나 lycopene 첨가군의 난황고(P<0.08), 난황 직경(P<0.19), 난각 견실도(P<0.19), 호우 유닛(P<0.34), 난백고(P<0.33)도 대조군에 비하여 다소 높은 수치를 보였다. 각 처리군간에 난중의 차이는 없는 것으로 나타났다. 4. 계란을 실온에서 4주간 보관시킨 후, 이들의 품질을 측정한 결과, Lycopene 처리군의 난황색(EYC)은 대조군에 비하여 유의적으로 높았으나(P<0.01), 그 이외의 항목에서는 유의적 차이가 없었다. 저장 4주 후의 첨가군의 난백고와 난황고는 대조군 보다 크고 난황 직경(EYD)은 대조군보다 작게 나타났다. 이 현상은 첨가군의 호우유닛 수치를 대조군보다 크게 하는 데 영향을 미친 것으로 추정된다.

This experiment deals with lycopene-enriched egg production in chicken and their effects on egg quality, especially antioxidant status of eggs upon their long term storage. Forty two laying hens(Hyline, 36 weeks of age) were assigned randomly to 1 of 2 diets containing 0 mg and 2 mg lycopene per kilogram feed for 4 weeks. There was a comparable concentration of lycopene in egg yolk($1.57{\mu}g$/1 g yolk) of chickens supplemented with dietary lycopene. No measurable concentration of lycopene was detected in egg yolk of chickens fed the control diet. Dietary lycopene supplementation increased egg yolk color(P<0.01), egg yolk height(P<0.08), egg yolk diameter(P<0.19), egg shell intensity(P<0.19), egg white height(P<0.33), and Haugh unit (P<0.34). After 4 week of storage of eggs in room temperature, lycopene treated eggs were tested for freshness. The ESI, EYH, EWH, HU, and EYC of lycopene treated eggs were comparably higher than those of control groups, even though there was not statistically significant difference between two groups whereas EYD of the control group was smaller than that of lycopene treated group. In conclusion, dietary lycopene supplementation to chickens might be improved egg quality.

키워드

참고문헌

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피인용 문헌

  1. Effects of lycopene and tomato paste on oxidative stability and fatty acid composition of fresh belly meat in finishing pigs pp.1828-051X, 2019, https://doi.org/10.1080/1828051X.2018.1549963
  2. Effects of Dietary Lycopene or Tomato Paste on Laying Performance and Serum Lipids in Laying Hens and on Malondialdehyde Content in Egg Yolk upon Storage vol.56, pp.1, 2019, https://doi.org/10.2141/jpsa.0170118