CIAD Mazatlán trial: higher final weight in white shrimp at 500 mg/kg
In a 21-day trial in juvenile L. vannamei, NatControl® at 500 mg/kg significantly increased final weight (3.27 g vs 3.12 g) and showed a favorable feed-conversion trend (1.92 vs 2.05), with high survival across all groups.
The research center CIAD Mazatlán (Mexico) ran a 21-day growth trial in juvenile white shrimp (Litopenaeus vannamei), comparing NatControl® at 500 and 1,000 mg/kg of feed against a control group and a commercial immunostimulant.
| Treatment | Final weight | Feed conversion (FCR) | Survival |
|---|---|---|---|
| Control | 3.12 g | 2.05 | 96% |
| NatControl® 500 mg/kg | 3.27 g | 1.92 | 93% |
| NatControl® 1000 mg/kg | 3.12 g | 1.97 | 95% |
| Commercial immunostimulant | 2.95 g | 2.22 | 95% |
Survival was high across all groups, with no significant differences between treatments (P>0.05).
The study concluded that 500 mg/kg is the sufficient dose; 1,000 mg/kg showed no additional gain.
The trial also noted operational advantages for feed mills: NatControl® is a dry, homogeneous, micro-pulverized additive with immediate feed acceptance and no change in pellet appearance.