Farms.com Home   News

Keep or Cull

By Jim Deckrell
 
 
“The key to culling is determining at what point the cow’s production potential has dropped enough to warrant replacement,” says Jeff Bewley, a dairy Extension specialist with the University of Kentucky. “In short, a cow should be culled when higher profits are expected from her replacement.”
 
That, of course, is easier said than done, Bewley acknowledges. “The expected future profits from the current cow depends on many things including the cow’s age, production, days in milk, reproductive status, previous and current diseases, and so on,” he says. “On top of that, estimating the future profits and lifespan of her replacement makes the task twice as difficult.”
 
To make the job a little easier, Bewley and colleague Karmella Dolecheck offer four tips:
  • Know your target herd size: Being aware of your current and target herd size in the future will dictate “if, when and how many cows to cull,” they say.
  • Be aware of replacement availability:  Consider not only the number of replacement heifers you have but their quality. “In most cases, the best genetics on the farm are in your heifers. Therefore, it’s important to realize that you are not replacing a cull cow with an identical animal but actually a genetically superior animal.”
  • Cow ranking. Use software programs that will rank your cows based on their potential profitability. For example, the CowVal option in DairyComp ranks cows according to their value before and after becoming pregnant. Looking at these values, you may not even want to breed an older cow if her “after-pregnancy” value is lower than an incoming replacement. Factors such as temperament or dominance also come into play.
Click here to see more...

Trending Video

Episode 83: Improve Your Bottom Line with the Power of Feed Testing

Video: Episode 83: Improve Your Bottom Line with the Power of Feed Testing

Now that cattle feed has been—or is being—harvested, it’s a good time to start thinking about testing it. While a visual check can help you spot the difference between good and poor-quality feed, it won’t tell you much about energy or protein levels. Only a feed test can give you that information. In this episode, we’ll talk about why feed testing matters, how to do it properly, and how to make sense of the lab results.