인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
This study investigated the effects of astaxanthin (Ax) on the growth, body color, and immunity of <i>Macrobrachium rosenbergii</i>. Four different concentrations of Ax (0, 50, 100, and 200 mg kg<sup>-1</sup>) were supplemented in the basal diet to assess their impact on the growth, coloration, immunity, and antioxidant capacity in <i>M. rosenbergii</i>. After 10 and 20 weeks of feeding, compared to the control group, the addition of 100 mg kg⁻<sup>1</sup> of Ax significantly increased the weight gain rate (WGR) and specific growth rate (SGR; <i>p</i> < 0.05) and shortened the molting cycle (<i>p</i> < 0.05). Addition of Ax increased the redness (<i>a</i> <sup> <sup><i>∗</i></sup> </sup> value) and yellowness (<i>b</i> <sup> <sup><i>∗</i></sup> </sup> value) of live and cooked <i>M. rosenbergii</i> (<i>p</i> < 0.05), and the muscle Ax content increased as the amount of added Ax increased. The enzyme activity results showed that after 20 weeks of feeding, the inclusion of 200 mg kg<sup>-1</sup> of Ax significantly increased the activities of superoxide dismutase (SOD) and alkaline phosphatase (AKP) in <i>M. rosenbergii</i> (<i>p</i> < 0.05) and significantly decreased the activity of malondialdehyde (MDA; <i>p</i> < 0.05). Compared with control group, the addition of 100 mg kg<sup>-1</sup> of Ax significantly increased the expression levels of genes related to immunity and antioxidant activity (<i>p</i> < 0.05). Additionally, there were significant differences in the expression levels of molting-related genes (ecdysteroid receptor (<i>EcR</i>) and retinoid X receptor (<i>RXR</i>)), across the different Ax supplementation levels and molting stages. Considering all factors, the addition of 100 mg kg<sup>-1</sup> of Ax to the feed not only improved the growth performance and body color of <i>M. rosenbergii</i> but also enhanced its immune and antioxidant capabilities. This study provides a reference for the application of Ax in crustacean feed.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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