Individual vs Combination Minerals--Which Do Cows Prefer?

It's a fact, cattle need minerals for good health. Ask 10 people which ones are best and you will get 10 answers. It's confusing. Here's my question. Why aren't we asking the cows what they need? I have closely observed and noticed some patterns which I, Dr. Arland Hill, share in this video. These observations are making a noticeable difference in the herd and making a positive impact on animal nutrition.

Dr. Arland & Leah Hill
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