Micro-Aid is an all-natural product, produced from a plant extract and has been marketed primarily as a mediator of emissions from animal manures. Anecdotal reports have stated that feeding Micro-Aidâ to sows increases the level of immunoglobulins in colostrum which many enhance piglet growth. The objectives of this experiment were to determine the impact of Micro-Aidâ on the levels of immunoglobulins in sow colostrum and piglet blood and subsequently on the impact on weight gain in piglets when included in the sow’s diet at 125 ppm for either 5 or 30 days pre-farrowing. The inclusion of 125 ppm of Micro-Aidâ in the diet of gestating sows for 30 days pre- farrowing resulted in 1 additional pig per litter. This result appears to be primarily due to a decrease in stillborns, rather than an effect via IgG concentrations delivered to the pigs prenatally. There was no effect of Micro-Aidâ on average birth weight, nor growth of the piglets from birth to weaning.