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The energy requirements for an Angus beef cow throughout her annual production cycle

By Kirsten Nickles, Graduate Research Associate and Anthony J. Parker, Associate Chair and Associate Professor. Department of Animal Sciences, Ohio State University
The nutritional requirements for beef cows change daily throughout their annual production cycle. The frequent change in requirements is caused by varying stages of production and environmental factors that affect the cow’s behavior and energy use. To give an example, a spring calving beef cow gestating throughout winter will have energy requirements for maintenance and gestation, and there may be further requirements for cold stress if winter climatic conditions place the cow outside her zone of thermal comfort. To appreciate how great the total net energy cost of a beef cow can be we have included the net energy requirements in Mcal/day throughout the annual production cycle of a mature 1,200-pound Angus cow with a peak milk yield (PMY) of 18 pounds. We included the requirements for maintenance, lactation, and ....

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Managing mud

By Matt Reese
While it is nice to envision Ohio’s rural winters with snow-covered fields and rolling hills gleaming white under the sun, the unfortunate reality for many livestock producers is much less glamorous. Unfortunately, winter typically means mud, and plenty of it.
“It has been an easy year so far, but we don’t usually seem to get much frozen ground. We get 34 degrees and pouring down rain and, if your cows are not on a feeding pad or hard packed surface, you’re losing money. In those conditions, you can’t keep them dry and keep them from losing energy through the mud to maintain a cow, let alone a pregnancy that is inside of her,” said Jason Poorman, a Perry County cattle producer. “If it was 20 degrees and sunny every day, we would be able to go through winter no problem. Cold and rainy is miserable on livestock and expensive for feed and bedding. There is so much waste and loss.” ....

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