The study looked at the effects of giving large doses of viosterol to young calves on their calcium and phosphorus levels. They wanted to see if this caused any harmful symptoms or changes in the animals. The researchers found that the amount of calcium and phosphorus in the calves' diet affected how toxic the viosterol was. When the calves were given extra calcium and phosphorus, the viosterol didn't cause as many problems. This suggests that the balance of these nutrients in the diet is important for the safety of using viosterol in young calves.