
In an 82-day trial conducted by Kansas State University, grazing steers fed Aureomycin® (350 mg per head daily) and Bovatec® (30 grams per ton of feed) showed an average daily gain that was 10 percent higher than unmedicated controls (2.64 pounds of gain per day vs. 2.40).
“As a general rule, we found that using the two medications together increased gain by 0.20 to 0.30 pound per day,” reports Dr. Gerry Kuhl, a retired cattle specialist from KSU who did some of the early trial work with the combination.
“When you get that improvement in rate of gain for a few pennies per day, it’s a very attractive investment — one that could also make energy and protein supplementation more cost-effective for grazing situations.”
While the KSU trials were limited to grazing beef cattle, investigators think the Aureomycin + Bovatec combination will benefit dairy operations as well — particularly in growing dairy replacement heifers because it will keep them disease-free and boost efficiency and performance.

According to a 2006 report by USDA, disease accounts for more than 95 percent of the industry’s total losses. And, of that 95 percent, 28.7 percent of cattle succumb to bovine respiratory disease and 16.8 percent die from enteric problems such as coccidiosis.
Fortunately, managing BRD and coccidiosis just got a whole lot easier when FDA approved feeding the broad-spectrum antibiotic Aureomycin® (chlortetracycline) in combination with the popular ionophore Bovatec® (lasalocid).
Feeding Aureomycin and Bovatec together allows producers to optimize weight gain and feed efficiency while controlling anaplasmosis, coccidiosis and the leading causes of and BRD.
Aureomycin and Bovatec have different yet complementary modes of action, which may account for the excellent performance seen when the two medications are used in the same feed. Bovatec works in the rumen microflora to improve intestinal health and allow animals to utilize the energy of feedstuffs more efficiently. That in turn produces a healthier animal, one that can respond better to antibiotic treatments.
The combination also lets you be more proactive managing BRD because you can feed Aureomycin without pulling an ionophore needed for coccidiosis control. Both Aureomycin and Bovatec are highly palatable and help increase feed efficiency/gain.
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