The effects of dietary vitamin supplementation on maternal performance and larval quality of the prawn Macrobrachium rosenbergii
Cavalli, R.O.; Batista, F.M.; Lavens, P.; Sorgeloos, P.; Nelis, H.J.; De Leenheer, A.P. (2001). The effects of dietary vitamin supplementation on maternal performance and larval quality of the prawn Macrobrachium rosenbergii, in: Hendry, C.I. et al. (Ed.) Larvi 2001: 3rd fish and shellfish larviculture symposium Gent, Belgium, September 3-6, 2001. Special Publication European Aquaculture Society, 30: pp. 124
In: Hendry, C.I. et al. (2001). Larvi 2001: 3rd fish and shellfish larviculture symposium Gent, Belgium, September 3-6, 2001. Special Publication European Aquaculture Society, 30. European Aquaculture Society: Oostende. XX1, 663 pp., meer
In: Special Publication European Aquaculture Society. European Aquaculture Society: Bredene. ISSN 0774-0689, meer
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| Beschikbaar in | Auteurs |
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Documenttype: Congresbijdrage
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| Trefwoorden |
Macrobrachium rosenbergii (De Man, 1879) [WoRMS]
Marien/Kust |
| Auteurs | | Top |
- Cavalli, R.O.
- Batista, F.M.
- Lavens, P., meer
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- Sorgeloos, P., meer
- Nelis, H.J.
- De Leenheer, A.P.
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| Abstract |
The effects of vitamin C (ascorbic acid -AA) and vitamin E (tocopherol) on the maternal performance and offspring quality of the freshwater prawn Macrobrachium rosenbergii were investigated. Three diets containing increasing levels of 2-ascorbyl-L-polyphosphate, and a fourth one containing comparatively higher alfa-tocopherol acetate (alfa-TA) levels, were fed to prawn females during 155 days. Higher dietary levels of AA and alfa-TA did not affect moulting, growth, or mortality rates of the broodstock. Also, breeding frequency and fecundity were not related to the dietary treatments. However, the contents of AA and alfa-tocopherol in the midgut gland, ovary , eggs, and newly hatched larvae increased along with higher dietary levels of these vitamins. The present results suggest that broodstock diets containing 60 µg AA.g-1 DW and 300 µg alfa-TA.g-1 DW are sufficient to ensure proper reproduction and offspring viability. However, feeding M. rosenbergii females higher dietary levels of both AA and alfa-TA (each around 900 µg.g-1 DW) might increase larval quality, as demonstrated in this study by the higher tolerance to the exposure to ammonia. |
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