PubAg

Main content area

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

Author:
Mengqing, L., Wenjuan, J., Qing, C., Jialin, W.
Source:
Aquaculture nutrition 2004 v.10 no.5 pp. 295-300
ISSN:
1353-5773
Subject:
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
Abstract:
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.
Agid:
1451601