and/or through water quality deteri

and/or through water quality deterioration in recirculating systems. As compared to water recirculation, daily water exchange was insufficient in the concrete pond. Under practical conditions, high stocking density often coincides with reduced water quality, so decreased growth was attributed to the combined effects of fish crowding and water quality deterioration (Santos et al., 2010).

ผลลัพธ์ (แอฟริกา) 1:

en / of in die water gekom gehalte agteruitgang in recirculatie stelsels. Soos in vergelyking met water hersirkulasie, daaglikse water ruil onvoldoende in die beton dam. Onder praktiese toestande, hoë weidigtheid val dikwels met 'n verminderde kwaliteit van die water, so afgeneem groei is toegeskryf aan die gekombineerde effek van vis verdring en watergehalte agteruitgang (Santos et al., 2010).