SciELO - Scientific Electronic Library Online

 
vol.25 issue3Production of ''Chame'' (Dormitator latifrons, Pisces: Eleotridae) larvae using GnRHa and LHRHaEffect of culture medium on growth and protein content of Chlorella vulgaris author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Revista Colombiana de Ciencias Pecuarias

Print version ISSN 0120-0690
On-line version ISSN 2256-2958

Abstract

RINCON, David D et al. Substitution levels of fish meal by Arthrospira (=Spirulina) maxima meal in experimental diets for red tilapia fingerlings (Oreochromis sp.). Rev Colom Cienc Pecua [online]. 2012, vol.25, n.3, pp.430-437. ISSN 0120-0690.

The high international demand and cost of protein ingredients have led to the increasing need to meet nutritional requirements of animals with national resources. Objective: the objective of th is study was to evaluate three levels of substitution (10, 20, and 30%) of fish meal with Spirulina maxima meal as a protein source in experimental diets for red tilapia fingerlings (Oreochromis sp.). Methods: masculinized fry (average weight: 2.5 ± 0.10 g) were randomly distributed in aerated aquaria with daily water exchange. Four diets were formulated replacing increasing levels of fish meal with Spirulina maxima meal, as follows: 10 (A), 20 (B), 30 (C) and 0% (D, control diet). A commercial diet (E) was also used. All diets were isoproteic (28%) and isocaloric (400 kcal/100 g). Fish were fed two daily rations during 90 days. Weight gain (GP), feed efficiency (EA), protein-efficiency ratio (REP), and feed conversion (FCA) were measured every two weeks. Results were assesses by ANOVA at the end of the test. Results: no significant differences (p>0.05) were observed for GP, EA and REP, indicating a similar efficiency in all diets (A, B, C, D, and E). Treatment C had the best FCA (p<0.05). Conclusions: fish meal can be substituted with up to 30% Spirulina maxima meal in the preparation of diets for red tilapia fry.

Keywords : feed conversion; protein ingredients; weight gain.

        · abstract in Spanish | Portuguese     · text in Spanish     · Spanish ( pdf )

 

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