Design defines response of selenium

摘要

For centuries, selenium was considered a toxic element. In recent decades, however, its advantages have also been discovered. Selenium is a useful element in animal nutrition, such as for poultry, but proper use is essential. As with so many things inthe world, the better the design of a specific item to meet a specific need, the better the response will be. We see this typically in race cars, sailing boats and nearly all aspects of performance. It is no surprise, then, that the design for the formof selenium illustrates the same issue when considered in animal production. Understanding the development of our knowledge on selenium is very important if we are to appreciate our position today, and what the future holds for this essential trace element.