By Fran O'Leary
Farm Progress
When we think about environmental effects on calves, most people believe cold weather is the main concern. But Lyssa Seefeldt, Extension dairy and livestock agent in Eau Claire County, Wis., says hot summer temperatures, sun, and high humidity can cause heat stress in calves, just as in the milking herd.
Reduced feed intake and increased maintenance energy needs to keep cool can lead to poor growth, higher susceptibility to disease and, in extreme cases, death, she says.