Growth and gastrointestinal indices in Nile tilapia fed with different diets - doi: 10.4025/actascianimsci.v34i3.13327

The adequate diet of Nile tilapia in their growth early stages is fundamental to the success of culture subsequent stages. The goal of the present work was to evaluate the Nile tilapia growth fed with different diets, and to morphometrically characterized the gastrointestinal tract of this species....

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Bibliographic Details
Published in:Acta scientiarum. Animal sciences 2012-02, Vol.34 (3)
Main Authors: Ricardo Lafaiete Moreira, Lucas Pinheiro Silveira, Erivânia Gomes Teixeira, Antonio Glaydson Lima Moreira, Plácido Soares de Moura, Wladimir Ronald Lobo Farias
Format: Article
Language:English
Subjects:
diets
digestive tract
natural food
Oreochromis
plankton
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Summary:The adequate diet of Nile tilapia in their growth early stages is fundamental to the success of culture subsequent stages. The goal of the present work was to evaluate the Nile tilapia growth fed with different diets, and to morphometrically characterized the gastrointestinal tract of this species. The treatments consisted of three diets: (D1) natural food, (D2), commercial feed and (D3) commercial feed + natural food. In the qualitative phytoplankton analysis, there was greater representation of the genus Chlorella, while zooplankton community analysis revealed greater number of Brachionus rotifer. Growth and survival in D2 and D3 did not reveal differences (p > 0.05), while in D1, the results were significantly lower (p < 0.05). The gastro-somatic and entero-somatic indices, and the intestinal quotient revealed higher values when only natural food was available. Nile tilapia reached best zootechnical performance when commercial feed was included in the diet. The intake of natural and/or artificial food is related to the growth and development of the gastrointestinal indices, emphasizing that these indicators can be altered by the type of feeding.  
ISSN:1806-2636
1807-8672
DOI:10.4025/actascianimsci.v34i3.13327