Ammonia excretion challenge in
Aquaculture
The intensification in aquaculture production leads to increasing attention on the management of ammonia from its waste. Natural solutions such as saponins have shown beneficial effects on shrimps. The aim of this study was to evaluate the effect of a dietary supplementation of a mixture of saponin-rich plants, Norponin® Opti, on the ammonia-nitrogen excretion of shrimps.
Field trial
Norponin® Opti
The trial was conducted on vannamei shrimp and lasted 1 month. There were two groups of shrimp : a control group fed with a standard grower feed and a tested group fed with the same grower feed + 500 ppm of Norponin Opti. The 500 ppm was added on top for the tested group. Total ammonia nitrogen (TAN: NH4+ and NH3) and nitrites (NO2-) were measured daily using colorimetric analysis of samples passed through a spectrophotometer.
The performances are compared between the two groups at the end of the trial. The results show a 19% decrease in TAN and a 14% decrease in nitrites for the group supplemented with Norponin Opti compared to the control group. Weight gain is 5.5% higher for the Norponin Opti group, but not significant. No difference in survival is observed.
Overall, the present study demonstrates that a supplementation with 500 ppm of Norponin® Opti as positively impacting ammonia-nitrogen management in shrimps.
Our 100% natural solution to contribute to the management of ammonia emissions
Norponin® Opti
Norponin® Opti is a solution combining different saponin-rich plants that contributes to the management of ammonia emissions.
