The most direct selenium supplement way was food selenium supplement. Generally, the order of selenium content from high to low was： the animal fish meat egg and poultry, oilseed, beans, grain and fruit. The consumption of pork and chicken were largest in meat products, so the selenium - enriched pork, chicken and other selenium - enriched meat products were developed and produced and it was an important direction. The selenium - enriched pork and chicken were taken as an example, the re- search progress on the standard, production technology ...
