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Late winter storms can cause challenges for cattle producers.
February 3, 2021
A Kansas State University beef cattle specialist is urging producers to continue monitoring their cattle’s condition, especially during periods when Mother Nature sends her winter chill.
Justin Waggoner, a beef systems specialist with K-State Research and Extension, said producers are often ready to deal with heat stress during the summer, but cold stress during the latter stages of winter can also be challenging.
“Cattle are very robust creatures; they are able to withstand a wide range of temperatures,” Waggoner said. “But January and February are often our most extreme temperatures in Kansas, and that can certainly have an impact on cattle.”
Cattle are most comfortable when they are in what is known as the thermoneutral zone, a range of temperatures where they are not experiencing cold or heat stress.
Waggoner said a cow’s condition going into a cold period will affect how the animal can withstand stress.
“If we have a cow that is in good condition, she is going to be able to withstand colder temperatures better than a cow that is exceptionally thin,” he said. “If we take a cow that is in good condition and has had adequate time to grow that winter hair coat, that animal can withstand some fairly cold temperatures. Typically, they won’t experience cold stress until the ambient temperature (the ‘real-feel’ temperature) reaches 18 degrees Fahrenheit.”
Rain, snow and wind complicate the situation, Waggoner added.
“When you wet that hair down, it reduces its ability to trap air and insulate the cow,” he said. “With a wet coat, a cow can experience cold stress even at 60 degrees F.”
Waggoner said cold stress increases the cow’s energy requirement—not protein which is a common misconception.
“One thing we see producers do when we get a cold weather event is they roll out hay,” he said. “What I recommend is utilizing hay that is slightly better quality than the forage those cattle currently are grazing. For example, if they had been turned out on milo or corn stalks, then a moderate quality grass hay will be higher quality than those stalks they were on.”
Waggoner also suggested other high quality forages, such as alfalfa, may be used as a supplement.
“In some regions of the country, it’s not uncommon for producers to use concentrates such as corn or byproducts as supplements during the winter. Producers might add 1 to 2 pounds of corn or byproduct feedstuffs under conditions of a storm front, in combination with some of the other things I’ve mentioned.”
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