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The effect of vitamin A supplementation in broodstock feed on reproductive performance and larval quality in Penaeus chinensis

Mengqing, L., Wenjuan, J., Qing, C., Jialin, W.
Aquaculture nutrition 2004 v.10 no.5 pp. 295-300
Fenneropenaeus chinensis, shrimp, shrimp culture, fish feeding, vitamin A, vitamin supplements, experimental diets, feed composition, fish eggs, vitamin content, hatching, fecundity, fish larvae, mortality, China
The effect of feeding four semi-purified diets A1, A2, A3, A4, containing different vitamin A acetate levels 0, 20, 40, 60 mg kg-1 diet, respectively, on fecundity, egg hatching rate, larval survival rate and vitamin A content in eggs of Chinese shrimp (Penaeus chinensis) broodstock was compared with a fresh clam diet (control) in a 60-day feeding trial. The broodstock shrimp fed the diet with 60 mg kg-1 vitamin A acetate added exhibited significantly higher fecundity (P < 0.01). Hatching rate was highest with diet A4 (P < 0.05), whereas hatching rates were similar fed diets A1, A2, A3. Increasing levels of vitamin A in broodstock diet resulted in improvement in larval quality. The vitamin A levels in shrimp eggs from broodstock fed with diet A4 were higher compared with those from broodstock fed with diet A1, A2 (P < 0.01). The fecundity and hatching percentages were positively correlated with the vitamin A content in eggs in the present study. The results of this study showed that higher level of vitamin A in broodstock diet may have positive effects on fecundity and larval quality in P. chinensis.