Stirling Products (ASX: STI) has reported that preliminary results from the trials of its lead product ST810 (R-salbutamol) in pigs indicate significantly higher potency than expected, with economic viability at the lowest dose tested.

Final results from the trial, which was conducted in the US by the USDA's Swine Research Unit, will be released early in 2005. The trial was designed to measure physiological and behavioural parameters including weight gain, feed conversion, increase in lean meat and decrease in fat content.