More dairy farmers are using motion sensors to help detect when cows are in heat. Producers say the tools also reduce drug use, help cut labor costs and provide the added benefit of early warnings of illness. Lucas Unbehaun, herd manager for Unbehaun Acres near Richland Center, Wis., said his farm has cut its drug costs and increased its conception rate. Unbehaun said:
"We would have eventually have noticed that (the cow) was ill, but the system shows you a lot faster. I think for us, it's made a vast improvement and will hopefully continue to do so."