Having studied the change of irradiation SPF feed on nutrient conten and microorganism and sensory quality,the method of fuzzy comprehensive quality evaluation with radiation processing was put forward and the optimization radiation sterilization dose of SPF test animal feed was established.

This paper consists of three experiments which studied the effect of sterilization process on microorganism and nutrient composition of SPF pig feed by radiation, microwave and extrusion, in order to choose the appropriate process to produce feeds which accord with SPF pig feed standard.

Study on hydrolyzed hair as animal feed protein source;

The number of bone dust in animal feed is main reasons for high content of phosphorus in its waste water.

The category of acaroid mites in animal feed in Anhui Province was investigated.

The development and application of SPF animals have become an a supported condition and foundation of our life science and biology medicine development.