The cattle feed additive Zilmax has no noticeable detrimental effect on cattle health or well-being, according to research by scientists from the University of Nebraska-Lincoln (UNL) and USDA’s Agricultural Research Service (ARS).
The study was initiated following Merck Animal Health's temporary suspension of the product's sales last year on concerns that it could cause lameness in cattle.
Ty Schmidt, a UNL animal scientist, and Jeff Carroll and Nicole Sanchez, both of USDA-ARS, completed the study.
During the 26-day study, scientists collected blood, via catheters; body temperature; and video images from 20 heifers, which were divided into two groups, with half receiving Zilmax at the recommended dose and half not receiving it.
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