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Semi-intensive culture of the kuruma shrimp Penaeus japonicus by fertilizer and feed applications in Italy
Lumare, F.; Amerio, M.; Arata, P.; Guglielmo, L.; Casolino, G.; Marolla, V.; Serra, A.; Schiavone, R.; Ziino, M. (1989). Semi-intensive culture of the kuruma shrimp Penaeus japonicus by fertilizer and feed applications in Italy, in: De Pauw, N. et al. (Ed.) Aquaculture: a biotechnology in progress: volume 1. pp. 401-407
In: De Pauw, N. et al. (1989). Aquaculture: a biotechnology in progress: volume 1. European Aquaculture Society: Bredene. ISBN 90-71625-03-6. 1-592 pp.
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| Beschikbaar in | Auteurs |
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Documenttype: Congresbijdrage
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| Auteurs | | Top |
- Lumare, F.
- Amerio, M.
- Arata, P.
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- Guglielmo, L.
- Casolino, G.
- Marolla, V.
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- Serra, A.
- Schiavone, R.
- Ziino, M.
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| Abstract |
An experiment was performed to evaluate the response of Penaeus japonicus production to applications of organic and inorganic fertilizer and feed in an experimental shrimp grow-out facility near the Lesina Lagoon on the southeast coast of ltaly. Five ponds (four of 100m² and one of 200m²) were stocked with 37-day old postlarvae (PL 37; average weight 0.084g) at densities of three and five specimens.m-2; daily the water was exchanged for about 10%. At first chicken manure was supplied (600kg.ha-1) and then inorganic fertilizer (ammonium nitrate and calcium phosphate: total amount ranging from 5 to 40kg.ha-1) was applied periodically, during the entire experimental period. For the first 35 days the postlarvae were fed trash squid (food conversion rate (FCR) between 2.2 and 3.9) and then three artificial diets (FCR between 1.6 and 1.8) were supplied daily at sunset by an automatic feeder. The experiment lasted about 152 days and a significant difference in growth rate has been observed among the different stocking densities. At harvest the average weight ranged from 15.3g to 27.0g, and the final yield from 493.1 kg.ha-1 to 560.9kg.ha-1. The survival rate varied from a minimum of 60.8% to a maximum of 79.3%. The best shrimp production occurred at a stocking rate of three postlarvae.m-2. Economic aspects of P. japonicus production by fertilizer and feed applications are discussed. |
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