Vetafarm Breeding Aid 5LBreeding Aid supplement for use with a wide range of birds. Supplements essential fatty acids, promotes egg production, and promotes increased hatchability. Size: 5L Breeding Aid is a special formulation of essential oils, fatty acids, and vitamins for breeding birds. Linoleic, Palmitic, and Oleic Acids are known to increase the size and quality of eggs where a deficiency occurs. Adequate vitamin intake is necessary for normal egg production.