期刊
AQUACULTURE RESEARCH
卷 47, 期 3, 页码 819-829出版社
WILEY
DOI: 10.1111/are.12540
关键词
astaxanthin; water; broodstock diet; condition; egg output
类别
资金
- Ministry of the Fisheries and Coastal Affairs of the Royal Norwegian Government
Broodstock of Atlantic cod were fed with three diets; astaxanthin supplemented (100ppmkg(-1)) hydrated diet (30% water) (HWHAs), no additional astaxanthin supplemented (50ppmkg(-1)) hydrated diet (30% water) (HWLAs) and a control diet (50ppmkg(-1) astaxanthin and 10% water). Throughout the spawning period, eggs were collected daily and fertilization success and proportion of embryos with normal cleavage were recorded. Larvae were reared using standard culture methods. Larval growth was recorded every 10days and larval survival was recorded at 50days post hatch. In general, broodstock fed with diets containing higher water content (HWHAs and HWLAs) and higher astaxanthin (HWHAs) had higher egg production and efficiency of egg output, lower egg incubation mortality and higher larval growth and survival. Broodstock fed with higher water content diets consumed less feed compared to control group. Also, broodstock fed with HWHAs and HWLAs recovered faster in terms of body condition than the control group. The egg bound mortality of female fish was significantly higher in control broodstock compared to broodstock fed with HWHAs and HWLAs. Broodstock fed with higher astaxanthin (HWHAs) had significantly higher fertilization success than other two groups however; no differences were found in proportion embryos with normal cleavage among different groups. Larval survival was significantly higher in HWHAs broodstock compared to other two groups. Our results showed that increased water content and astaxanthin levels in the diet could improve the condition and fecundity of Atlantic cod broodstock.
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