Resumo

ESTRADA-PEREZ, N. et al. Predicting semi-intensive production of Penaeus vannamei using simple linear regression models: An analysis of the importance of environmental and management variables. Revista bio ciencias [online]. 2022, vol.9, e1347.  Epub 12-Abr-2024. ISSN 2007-3380.  https://doi.org/10.15741/revbio.09.e1347.

An analysis was conducted on semi-intensive production of a commercial farm of white shrimp (Penaeus vannamei) to establish recommendations for production improvement, assessing environmental influence and management variables on growth and survival. For this purpose, records of a production cycle were obtained, then a variance analysis was conducted to determine significant differences in environmental variables among ponds. The following relationships were determined: 1) environmental variables correlated with management variables and 2) environmental and management variables correlated with production parameters (final weight and final survival). Subsequently, simple linear regression models were obtained between the variables related to production parameters to conduct sensibility analysis by simulation. The analysis of variance showed statistically significant differences (p < 0.05) in temperature and dissolved oxygen concentrations among ponds. The correlation analysis between environmental and management variables showed that the final weight was positively related to temperature and dissolved oxygen and inversely proportional to the stocking density and cultivation duration (p < 0.05). Survival was negatively correlated with pond size (p < 0.05). Sensibility analysis by simulation showed that dissolved oxygen variability affected final production more than other variables, as it increased from 1.521 kg ha-1 to 2.429 kg ha-1. The remainder variables in order of importance were: temperature, cultivation duration, amount of feed, stocking density, and pond size, respectively. Within the ranges tested, higher levels of dissolved oxygen, appropriate stocking densities, and small pond size could substantially improve the production in semi-intensive Penaeus vannamei shrimp farms.

Palavras-chave : Production commercial; Penaeus vannamei; Management.

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