Dairy farming is a very complex activity where different sectors can influence. Nutrition, welfare, reproduction, management, all work as a gear where if one of these sectors is not performing well, it can significantly compromise the others.
Specifically talking about reproduction, the focus is always on making more cows pregnant. That way, besides having more calves per year, we’ll keep a higher percentage of lactating cows, generating more income for the farm.
The main indicator of reproductive efficiency is the Pregnancy Rate (PR). It directly involves two other indicators, the Conception Rate (CR) and the Insemination Rate (IR). Today’s goal is to better understand how the IR influences the economic results in a dairy farm.
But what is the insemination rate?
The IR can be calculated by dividing the number of inseminations in the last 21 days by the number of cows eligible to be inseminated in the same period. Eligible cows are all the cows except the pregnant and freshly calved cows that have not been liberated for reproduction yet (voluntary waiting period).