교잡전복 (둥근전복♀*왕전복♂) 치패를 대상으로 천연먹이 공급을 통한 바이오마커의 개선 효과를 알아보고자 하였다. 연구에는 평균 각장 약 17 mm, 전중 0.83 g의 치패를 사용하였다. 먹이조건은 천연먹이구 (건조 방사무늬김)와 배합사료구 두 조건으로 설정하였으며, 실험기간은 16주였다. 생존율은 배합사료구에 비해 천연먹이구에서 약 14% 높았으며, 성장 역시 천연먹이구에서 빠른 성장을 보였다. 패각기형률은 배합사료구 (21.5%)에 비해 천연먹이구 (7.5%)에서 낮았다. 생화학적 조성 가운데 탄수화물을 제외한 성분은 두 실험구 모두 유사한 값을 보였다. 간췌장에서 상피세포들의 변성은 배합사료구에 비해 천연먹이구에서 낮았으며, 호염기성세포들의 활성은 천연먹이구에서 높았다. 이러한 결과는 교잡 전복 (둥근전복 ♀*왕전복 ♂) 치패의 사육에 해조류 먹이의 공급을 고려 할 만하다는 것을 의미한다.

The purpose of this study was to investigate the improvement effect of biomarkers through the supply of natural diet in the juvenile hybrid abalone (Haliotis discus discus♀*H. madaka♂). For the study, the shell length of about 17 mm and the total weight of 0.83 g were used. The feeding conditions were set as the natural diet group (dried laver) and the formulated diet group, and the experiment duration was 16 weeks. The survival rate was about 14% higher in the natural diet group than the formulated diet group, and growth was also faster in the natural diet group. Shell malformation rate was lower in the natural diet group (7.5%) than the formulated diet group (21.5%). In the biochemical composition, except for carbohydrates, both experimental groups showed similar values. The degeneration of epithelial cells in the hepatopancreatic tubule was lower in the natural diet group than the formulated diet group, and the activity of basophilic cell was higher in the natural diet group. These results indicate that it is worth considering the supply of natural diet for the breeding of juvenile hybrid abalone and the improvement of the quality of the formulated diet (H. discus discus♀*H. madaka♂).