Combinations of antioxidant systems, such as Selenium and natural Vitamin E, amino acids such as Carnatine and the correct omega balance can help to maintain optimum fertility in breeding stock. In stallions, studies have shown that these systems can help to maintain spermatozoa activity (Vigour) and survival (Vitality) thus helping to improve fertility rates (Viability) in covering stallions. In broodmares, follicle development is stronger (Vitality) with increased chances of survival (Vigour) and embryos being carried to term. Colostrum quality is improved enabling the newborn foal a greater opportunity to grow healthily and to survive (Viability).