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Water quality and Nile tilapia growth performance under different feeding schedules - doi: 10.4025/actascianimsci.v33i4.12207
- Source :
- Acta Scientiarum: Animal Sciences, Vol 33, Iss 4 (2011)
- Publication Year :
- 2011
- Publisher :
- Editora da Universidade Estadual de Maringá (Eduem), 2011.
-
Abstract
- Present study investigated the effects of different feeding schedules on certain variables of water quality and growth performance of Nile tilapia juveniles. Fifteen 25-L aquaria were used to hold the experimental fish population for six weeks. Five fingerlings (1.86 ± 0.13 g) were stocked in each aquarium (200 fish m-3; n = 5). The diet provided to fish and the feeding rates adopted were the same for all fish. The daily ration was divided in four meals (8, 11, 13 and 16h). In the positive control group (25/25/25/25), the daily ration was equally divided in the four meals; in the negative control group (40/30/20/10), the daily ration was unevenly divided in a progressively decreasing fashion (40, 30, 20 and 10%) throughout the day; in the experimental group (10/20/30/40), the daily ration was unevenly divided in a progressively increasing fashion (10, 20, 30 and 40%) throughout the day. The feed conversion ratio results were better for 10/20/30/40 than for the other groups. The 10/20/30/40 feeding schedule probably best combined the dietary allowance for fish with the increase in water temperature during the day.
- Subjects :
- aquaculture
daily ration
feeding management
Animal culture
SF1-1100
Subjects
Details
- Language :
- English
- ISSN :
- 18062636 and 18078672
- Volume :
- 33
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- Acta Scientiarum: Animal Sciences
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.6708f0d4955b4a3fab47ff0c44ed438e
- Document Type :
- article
- Full Text :
- https://doi.org/10.4025/actascianimsci.v33i4.12207