Cows observed in heat in the morning should be inseminated in the evening of the same day, and cows in heat in the evening should be inseminated the following morning. The AM-PM rule will usually result in high conception rates if careful heat detection is performed. Breeders with Brahman or high percentage Brahman cattle should inseminate their cattle approximately 8 hours after standing heat, instead of 12 hours after heat. Cattle that you suspect, due to heat detection aids, were in heat in that time period should be inseminated that morning. To be successful with an artificial insemination program, cattle must be managed properly to prepare them for breeding.
Nutrition is a vital link in achieving high conception rates.
Cows to be inseminated should be in a proper body condition score. Desirable body condition scores would be in the 5-7 range. Cows should be fed or allowed access to high quality forage that allows them to achieve desirable flesh. Cattle that are too thin or too fat would not be good candidates for AI programs. Proper mineral supplementation is also important.