${\beta}$-8-Apo-Carotenoic Acid Ethyl Ester의 급여가 산란 노계의 도체와 난황의 착색에 미치는 영향

Effect of ${\beta}$-8-Apo-Carotenoic Acid Ethyl Ester Supplementation on Pigmentation in Muscle, Skin, and Egg Yolk of Old Layers

  • 나재천 (농촌진흥청 축산연구소) ;
  • 장병귀 (농촌진흥청 축산연구소) ;
  • 이진건 (농촌진흥청 축산연구소) ;
  • 하정기 (경상대학교 축산학부) ;
  • 송재연 (충남대학교 농업생명과학대학) ;
  • 이봉덕 (충남대학교 농업생명과학대학) ;
  • 안길환 (충남대학교 농업생명과학대학)
  • 발행 : 2004.06.01

초록

${\beta}$-8-Apo-carotenoic acid ethyl ester (ACA)를 0~300mg/kg을 사료에 첨가하였을 때 산란노계의 피부 및 계육에 미치는 착색효과를 조사하였다. 산란노계에서 황색도($b^*$ )는 모든 부위의 피부에 있어서 ACA를 5~100mg/kg 이상 첨가시 무첨가구보다 유의적으로 높았다(P < 0.05). 날개육, 가슴육 및 다리육에서 유의적 수준의(P < 0.05) 황색도 변화를 일으키기 위해서는 100-200 mg/kg 이상의 ACA 첨가가 필요하며 피부에 비하여 첨가수준이 약간 더 높았다. ACA의 첨가수준에 따른 일령별 난황색의 변화는 급여 1일에서는 무첨가구와 첨가구간에 유의차가(P < 0.05)가 300 mg/kg에서만 보였으나, 2일째부터는 무첨가구에 비하여 모든 첨가구가 유의적으로 높았다(P < 0.05). 1-5주간 급여시 모든 첨가구가 무첨가구보다 첨가수준이나 급여기간에 관계없이 유의적으로 높았다(P < 0.05). 1~5주간 급여시 모든 첨가구가 무첨가구보다 첨가수준이나 급여기간에 관계없이 유의적으로 높았다(P < 0.05).

The effect of supplemental yellow ${\beta}$-8-Apo-carotenoic acid ethyl ester (ACA) (0~300mg/kg feed) on its accumulation in each body part of laying hens and the pigmentation in egg yolk was determined. The chickens used in this study were 78-wk-old ISA brown laying hens. ACA significantly affected the color of the bodies of laying hens. The yellowness ($b^*$) but not the redness ($a^*$) and, the lightness ($L^*$) of the skin, and muscle as measured by a colorimeter significantly (P < 0.05) increased when ACA was fed at 50~100 mg/kg feed. Egg yolk color was also significantly affected by feeding ACA longer than 2 days (P < 0.05) at the levels higher than 50 mg/kg feed. Conclusively, ACA is recommended for improving yellowness of skin.

키워드

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