SciELO - Scientific Electronic Library Online

vol.34 issue3Effect of sulfated polysaccharides from the Rodophyta Kappaphycus alvarezii in post larva of Nile tilapia (Oreochromis niloticus) submitted to a stress situationMesquite bean and cassava leaf in diets for Nile tilapia in growth author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Acta Scientiarum. Animal Sciences

On-line version ISSN 1807-8672


MOREIRA, Ricardo Lafaiete et al. Growth and gastrointestinal indices in Nile tilapia fed with different diets. Acta Sci., Anim. Sci. [online]. 2012, vol.34, n.3, pp.223-229. ISSN 1807-8672.

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.

Keywords : Oreochromis; diets; natural food; plankton; digestive tract.

        · abstract in Portuguese     · text in English     · English ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License