You better believe that cows will eat the same clover that the deer use in foodplots. And deer will eat the same clover as cows. There are variety differences and some varieties will perform better in cattle pastures or hay fields then others. Each variety may have differ preferrences by deers and cattle, however, I believe it likely that both species will prefer similar varieties if allowed a choice. The varieties with small stems, high leaf to stem ratio should always come out on top versus larger stem and lower leaf to stem ratios.