Discovering disappointing pregnancy rates after the breeding season is frustrating. Discovering them while there’s still time to respond can change the outcome.
Earlier pregnancy diagnosis is shifting the role of the preg check from documenting breeding performance to evaluating it. Instead of simply identifying open cows, veterinarians have an opportunity to investigate why cows aren’t settling and help producers make adjustments before the breeding season is over.
“If you’re finding out that a huge percentage of them didn’t get bred, what can we change going forward? Do we need to add more bull power? Do we need to add more groceries? Do we need to make sure that there isn’t a disease process that we need to get ahead of? It can really stop a wreck from happening at the end of the season while you still have a chance to correct,” says Dr. Katie McGinnis, veterinarian at Heston Veterinary Clinic.
Why Timing Matters for Pregnancy Diagnosis
Identifying pregnancies at approximately 28 to 30 days after breeding gives veterinarians something they rarely have later in the season: options.
Rather than accepting poor conception rates as the final result, you can begin asking questions while those answers can still influence the herd. A herd with unexpectedly low pregnancy rates may prompt questions about whether bulls passed breeding soundness examinations, whether heat stress or declining body condition affected conception, or whether an underlying disease challenge is limiting reproductive performance.
Those conversations can lead to changes in breeding management, nutrition or herd health before reproductive losses continue to accumulate. Open cows may also be candidates for rebreeding, depending on the operation’s breeding program.
Using Pregnancy Staging to Improve Calving Management
Finding pregnancies is only part of the examination.
Early pregnancy diagnosis can also provide fetal age, fetal sex and evidence of twins. For herds using both AI and natural service, pregnancy staging may also help determine whether pregnancies resulted from the planned AI breeding or a later bull exposure.
One of the most practical uses is pregnancy staging.
“One of the biggest advantages is that then you can bring those cattle in in groups for calving,” says McGinnis.
Rather than treating every pregnant cow as though she’ll calve at the same time, producers can manage groups according to expected calving dates. That makes it easier to allocate labor, prepare facilities and focus observation on the cows most likely to calve first. For operations managing winter calving or limited barn space, that information can simplify housing decisions long before the first calf arrives.
Seedstock producers may also use fetal sex information to plan replacement and marketing decisions, while identifying twins early provides additional time to prepare for potential calving challenges.
Planning Pregnancy Checks Around Herd Goals
McGinnis says the most valuable pregnancy check starts long before cattle enter the chute.
Some producers simply want to identify open cows as early as possible. Others want to stage pregnancies, determine fetal sex or separate AI pregnancies from natural-service conceptions. Those goals determine when the examination should take place and what information veterinarians can realistically provide.
“The more preplanning you can have, the better outcome you’re going to have,” says McGinnis.
Earlier pregnancy diagnosis is changing the value of the pregnancy check itself. Instead of serving as the final report card on the breeding season, it has become one of the first opportunities to improve it.
“It just all comes down to the more information you have, the better informed decisions you can make,” says McGinnis.
