Sampling of hay is essential to livestock management. Hay sampling is best accomplished with a hollow core probe consisting of a stainless-steel tube and a sharp cutting end. The Chouteau County Extension office has a hay probe available for check out. One core should be sampled from at least 20 bales from a lot of hay. A lot of hay is defined as hay harvested from a field of uniform maturity within two days. A lot should not exceed 200 tons. Poor sampling techniques and an inadequate number of subsamples (less than 20) are the largest sources of error in hay testing. Square bales should be sa...
