Abstract

PROANO MORALES, Jonathan Josue; PROANO MORALES, Andy Steveen; MOREIRA SANCHEZ, Yessenia Katerine  and  IBARRA MAYORGA, Teresa Eulalia. Comparison between diffuser hose and PVC pipe for aeration in production of Litopenaeus vannamei with biofloc at different protein levels. Ces. Med. Vet. Zootec. [online]. 2022, vol.17, n.1, pp.11-27.  Epub Sep 20, 2022. ISSN 1900-9607.  https://doi.org/10.21615/cesmvz.6373.

When implementing biofloc technology, aeration is one of the problems to obtain good productive results, therefore, the objective was to compare the efficiency of PVC pipe and diffuser hose, as an aeration system in crops with biofloc and two levels of protein. A completely randomized design with factorial arrangement was applied with four treatments with three replicates each, with the two aeration systems and with two levels of crude protein (CP) in the balanced feed in Litopenaeus vannamei shrimp productions, distributors of the following way, for treatment one (T1) PVC pipes and 28% PB were achieved; for T2, diffuser hose and 22% PB; for T3, diffuser hose and 28% PB; for T4, PVC pipe and 22% PB, produced with biofloc. The variables weight, height, feeding and the treatment factor significantly influence the concentration of dissolved oxygen (DO, mg/l) in the afternoon. T1 is the one that behaves best in the afternoon and T3 in the morning, the treatment with the lowest sedimentation at 20 and 30 minutes in the Imhoff cone test was T4 and the highest sedimentation was T3. There was no significant difference in survival between treatments, protein levels did influence OD concentrations. The use of PVC pipe provides an increase in weight and DO concentration in relation to the diffuser hose system with 22% and 28% crude protein.

Keywords : ammoniacal nitrogen; dissolved oxygen; sediment; shrimp; nutritional (Sources: ICYT, AIMS).

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