한국어류학회지 (Korean Journal of Ichthyology)

  • 제28권4호
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  • Pages.229-238
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  • 2016
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  • 1225-8598(pISSN)
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  • 2288-3371(eISSN)
한국어류학회 (The Ichthyological Society of Korea)
권호 표지

사육조건에 따른 능성어, Epinephelus septemfasciatus, 수정란의 난질 및 아미노산 조성

Egg Quality and Amino Acid Composition of Fertilized Eggs of Sevenband Grouper, Epinephelus septemfasciatus per Farming Condition

  • 투고 : 2016.09.13
  • 심사 : 2016.12.12
  • 발행 : 2016.12.31
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초록

본 연구는 능성어 부상란과 침강란의 아미노산 분석을 통하여 난의 생존에 필요한 요소를 구명하고, 사육환경 및 먹이에 따른 난질의 변화를 난의 생화학적 분석을 통하여 난질에 영향을 미칠수 있는 요소를 구명하기 위하여 수행하였다. 그 결과 육상수조에서 사육하는 것보다 해상가두리에서 사육할 때 난질이 우수하였고, 서로 다른 먹이를 공급한 후 배란을 유도하여 난의 특징을 조사하였다. 그 결과 배합사료만 공급하거나 배합사료와 생사료를 혼합급이한 것보다는 생사료만을 급이한 어미에게서 우수한 수정란을 얻을 수 있었다. 그리고 부상란과 침강란의 아미노산을 분석한 결과 부상란에서 유리아미노산의 함량이 높았으며, 배합사료만 급이하거나 배합사료와 생사료를 혼합 급이한 경우 보다는 생사료만을 공급한 경우 수정란의 유리아미노산의 함량이 높았다. 즉, 난질이 우수할수록 유리아미노산의 함량이 높았다.

This study aims to investigate egg quality and amino acid composition of buoyant and non-buoyant eggs and evaluate egg quality of sevenband grouper, Epinephelus septemfasciatus. Amino acid analysis of eggs was conducted to investigate what elements were necessary for the survival and good quality of egg depending on farming condition and different diet. We analyzed amino acid from buoyant eggs and non-buoyant eggs, farming conditions (tank and sea cage), and different dietary conditions (formulated feed, formulated feed+raw fish-based moist pellets, and raw fish-based moist pellets). Egg quality was the best in a sea cage and when raw fish-based moist pellets (MP) were fed. In addition, egg quality with formulated and MP was better than that with formulated feed. As a result of amino acid analysis of eggs, buoyant eggs were containing more free amino acid than non-buoyant eggs. Also, eggs with MP were containing more free amino acid than those with formulated feed and MP. Eggs with mixed formulated feed and MP were containing more free amino acid than formulated feed. In conclusion, amino acid was helpful to improve egg quality, and egg quality can be controlled by farming conditions and feed.

키워드

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