Characterization and evaluation of the impact of feed management on the effluents of Nile tilapia (Oreochromis niloticus) culture

Autor(es)

Ana Eliza Baccarin ^[1] ; Antonio Fernando Monteiro Camargo ^[2]

Afiliação do(s) autor(es)

^[1] UNESP. Centro de Aqüicultura - Brasil

^[2] UNESP. Instituto de Biociências. Departamento de Ecologia - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Archives of Biology and Technology; v. 48, n. 1, p. 81-90, 2005-01-00.

Resumo

The objective of this study was to evaluate the effect of different feed management on the quality of effluent water generated in Nile tilapia (Oreochromis niloticus) culture ponds. Feed was supplied as follows: natural food, and pelleted, extruded or minced ration. The study was conducted during 19 weeks in 12 continuous water exchange ponds of 300 m² each, with a population of male Nile tilapia juveniles, in a density equal to 1.7 fish m-2. Feeds contained 30% crude protein, 3,000 kcal digestible energy, and were supplied twice a day. Natural food consisted of chicken manure. Temperature, dissolved oxygen, pH, total phosphorus, total nitrogen, chlorophyll a and suspended solids were monitored weekly in the supplying and effluent water. Water residence time was also determined for the ponds. In general, effluent water quality decreased in all treatments. (AU)

• Processo FAPESP: 98/16458-4 - Impacto ambiental e parâmetros zootécnicos da produção de Tilápia do Nilo (Oreochromis niloticus) sob diferentes manejos alimentares
• Beneficiário: Ana Eliza Baccarin Leonardo
• Modalidade de apoio: Bolsas no Brasil - Doutorado