AI and Stockbull usage in the National Dairy herd – 2015

Table 21: An analysis of the proportion of calves out of dairy cows that were sired by AI Sires and Stockbulls in 2015. (Pie Chart 2).

Table 21 summary

• Allowing for unknown sires – approximately 40-50% of dairy calves were sired by Dairy AI Sires.
• Approximately 5-10% were sired by Beef AI Sires.
• Approximately 30-40% were sired by Dairy Stockbulls and another 10-20% were sired by Beef Stockbulls.

40-50% of calves out of dairy cows were sired by Dairy AI Sires in 2015.