The average herd size in New Zealand was 386 in the year ending June 2011.
The average production per cow for a herd of this size in 2010/2011 was 337 kg milksolids per cow
Prices received for milksolids in 2010/2011 was 7.89 ($/Kg milksolids)
Some quick calculations reveal that the total losses incurred by an average size dairy farm over a 2 day power outage would most likely cover the cost of a permanent generator installation.
Depending on the length of a power outage the accumulated losses to a dairy farmer can be substantial. Having a reliable and capable generator on standby is the best way to avoid having cows stuck on a milking platform which has lost power. When compared to the costs associated with cows that can’t be milked or milk that can’t be properly cooled, the initial outlay for a generator can save you time and money.
The losses and consequential losses include:
Loss of daily yield
Additional labour costs associated with the clean up
Plant hire fees
Veterinary costs associated with treating illnesses such as mastitis