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 investigates the effect of dietary Selenium (Se) supplementation on reproductive performance, fecundity, hatchability, egg and oil droplet size, and serum biochemical parameters in Gilthead Sea Bream (G. Sea Bream, Sparus aurata) broodstock. The study includes three treatment groups: a basal diet (BD) without selenium supplementation (control group, C), a BD supplemented with selenium nanoparticles (Nano-Se) at 0.3 mg/kg, and a BD supplemented with organic selenium (Org-Se) at 4 mg/kg (2 g of crushed yeast; Sel-Plex 2000 mg Se kg-1, Alltech, Lexington, KY). The glutathione peroxidase (GPx) enzyme activity, the characteristic of the egg and offspring, was examined, as well as the survival and growth of the resulting larvae. Nine 15 cubic meters fiberglass tanks were used in the experiment, filled with seawater of a salinity of 36.9 ± 1.1 parts per thousand (ppt). Each tank was stocked with six G. seabream broodstock, maintaining an equal sex ratio (three males and three females). The females’ average weight was 1000 ± 50 g, while the males averaged 400 ± 50 g. The brooders were fed 5% of their body weight three times daily for 84 days, using an equal mixture of 45% crude protein dry feed, squid, and sardine. The broodstock were injected with 10 µg/kg of a Luteinizing hormone-releasing hormone (LHRH) analog after the 84-day feeding period to induce spawning. The levels of reproductive hormones, including luteinizing hormone (LH), follicle-stimulating hormone (FSH), testosterone (T), and estradiol (E), in brooders (males and females) fed selenium-supplemented diets with Nano-Se and Org-Se increased. In males fed Nano-Se, the increases compared to the control were 74.8%, 84.8%, and 134.8% for the respective groups. While the males fed Org-Se, the increases were 14.01%, 20.01%, and 26.09%, respectively. However, in Females fed the Nano-Se diet, increases as compared to control were 58.1%, 121.4%, and 98.5%, and in females fed the Org-Se diet, increases were 28.17%, 38.21%, and 55.22% for LH, FSH, and estradiol (E), respectively. Albumin, total protein, and globulin levels, as compared to the control, were also increased in brooders (both male and female) fed the Nano and Organic Selenium diets. In contrast, the brooders (male and female) fed the Nano and Organic Selenium diets exhibited triglycerides, lipids, and cholesterol lower than the control. The total egg number, relative fecundity, final egg and oil droplet diameter, and hatchability were also higher in the brooders fed the Nano and Organic Selenium diets than in the control. Data of the larvae (20 DPH) produced from broodstock fed with diets fortified with different forms of Selenium during the maturation period were also investigated. The larvae from mothers fed the Nano-Se exhibited higher final length, final weight, and survival rates than those fed the Control and Org-Se diets.
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.
최근 본 자료 전체보기
