Crude protein levels in diets for two growth stages of Nile tilapia (Oreochromis niloticus) in a biofloc system
| Autor: | Túlio Soares de Brito, Werona J M Borges, Eduardo Maldonado Turra, Érika Ramos de Alvarenga, Edgar de Alencar Teixeira, Gabriel Francisco de Oliveira Alves, Ludson Guimarães Manduca, Suellen Cristina Moreira de Sales, Marcos Antônio da Silva, Alaion Fonseca da Silva Junior |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
food.ingredient Phosphorus Alkalinity chemistry.chemical_element Aquatic animal Tilapia 04 agricultural and veterinary sciences Aquatic Science Biology biology.organism_classification 03 medical and health sciences Oreochromis Nile tilapia 030104 developmental biology food Animal science chemistry 040102 fisheries medicine 0401 agriculture forestry and fisheries medicine.symptom Weight gain Total suspended solids |
| Zdroj: | Aquaculture Research. 49:2693-2703 |
| ISSN: | 1355-557X |
| DOI: | 10.1111/are.13730 |
| Popis: | Biofloc technology (BFT) provides an additional feed source for aquatic organisms through the conversion of waste in microbial flocs. Because of this, the suitable protein level in a diet for animals in this system could be different from those in conventional systems. Our objective was to determine the suitable protein level in the diet of Nile tilapia juveniles reared with BFT. Two experiments were carried out with tilapia weighing ~10 g (first experiment) and about 50 g (second experiment) during 61 and 98 days respectively. Five crude protein (CP) levels (within 17% and 33%) were tested. The increment of CP resulted in a reduction in dissolved oxygen, pH, alkalinity and an increase in dissolved phosphorus, total suspended solids and total ammonium nitrogen. The crude protein level had a significant effect (p |
| Databáze: | OpenAIRE |
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