2.5. Supplementation Material
POLAND
The supplementation packages of 90 unlabeled sachets containing either colostrum or placebo were prepared by Genactiv Trade Sp. z o. o., Poznań, Poland. Colostrum pouches contained 500 mg of a freeze-dried bovine colostrum collected within first 2 h after calf delivery was mixed with 500 mg of desiccated banana. Placebo doses were 500 mg of a spray-dried whey mixed with 500 mg of identically dried-out banana. Such an assortment of supplementation materials was effectively used in our previous experiments [