How does calving difficulty affect reproduction for next year?
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The first calf heifer represents one of the most challenging animals in our cowherd. She hasn’t reached maturity yet and we also see the highest levels of calving difficulty in that population. Getting her successfully re-bred is a challenge under the best of circumstances. Now the stakes are much higher given the significantly greater values of bred heifers and bred cows. A first calf heifer that either loses her calf or fails to re-breed could easily lose half her value when she’s marketed as a cull compared to being retained on the balance sheet as a bred female. Any steps that can be taken to minimize those losses will help us hold the line on the expense of cow depreciation and replacement costs.
Preventing calf death loss at calving either from calving difficulty, from disease or environmental stress is the obvious place to start when we are trying to increase our income and minimize our need for replacements. The effect that calving difficulty has on re-breeding success of a first calf heifer isn’t always so obvious. In a Meat Animal Research Center study, the conception rate during a 70 day breeding season for heifers that had trouble calving was 16% lower compared to heifers that calved unassisted (85% versus 69%).
When we add up all the costs associated with calving difficulty, including death loss, veterinarian and labor expenses, plus the potential for lowered reproductive success, it becomes very clear that calving difficulty in heifers is an expensive proposition, even more so in today’s market. While we can’t do anything to change the genetics in place for this year’s calf crop, we can put plans in place to maximize our chances for success during calving season this year. Some of the things that we can consider now are:
• Be prepared. Have the facilities and all necessary equipment ready and available in plenty of time. That first heifer usually comes faster than we think.
• Have a plan. Think about what could (or will) go wrong during calving season and how you might be able to address those problems. Recognize when you may need to call for some assistance from your veterinarian. Usually if we wait too long, we greatly cut our chances of success.
• Sanitation is important but often overlooked. Anytime we’re assisting the calving process, we’re introducing pathogens into the reproductive tract. Some steps we can take include cleaning the cow before entering, using OB sleeves and disinfecting the equipment after use.
None of this is new or particularly earth-shattering information. But the market environment we’re operating in this year is new, where every calf and every bred female are worth much more dollars than we’ve seen before. Small improvements in outcomes will have a much larger financial impact than we’ve seen before. To put things another way, a few more calves saved or a few more heifers bred back could go a long way to fund a really nice vacation.
Source: Warren Rusche





Comments (2)
Leave a commentTim
Report AbuseCan you expand on or have numbers on all the costs associated with calving difficulties? Such as the death loss, vet costs and labor? Thanks
Warren Rusche
Report AbuseGreat question Tim, those costs can vary quite a bit based on ranch conditions, the severity of dystocia, and your skill in assisting births. I’ve put a few numbers together of expenses that I think are certainly possible, but I’d like to know what you and others think.
Suppose we needed to assist 10 heifers this calving season:
Two extra hours/heifer of your labor per head @$20/hour =$400
Two vet calls out of the ten head @$125 = $250
Additional expense (medical etc), $15/pair = $150
Lose one calf out of the ten = $800 lost sales
Sell that heifer = $900 (Value of bred heifer minus her salvage value)
One extra 2-yr old that didn’t breed back = $800 (Loss in value)
Total costs = $3300 or $330 per assisted heifer
I’m sure that a lot of folks could debate these examples back and forth, but I think we’d all agree that calving difficulty can be costly. Most of the costs are from death loss, the loss in value of culled females, and poorer reproductive success. Warren Rusche, SDSU Extension Cow/Calf Field Specialist, Warren.Rusche@sdstate.edu