The effect of vitamin A supplementation in broodstock feed on
reproductive performance and larval quality in Penaeus chinensis
L.
Mengqing, J. Wenjuan, C. Qing, W. Jialin-2004
Aquaculture
Nutrition,
10(5): 295-300
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.
(Yellow
Sea Fisheries Research Institute, PO Box 266071, 106 Nanjing Road, Qingdao,
China. E-mail: liangmq@ysfri.ac.cn)