What are the characteristics of feed puffer?

               China is the world's aquatic feed production country, aquatic feed production accounts for about half of the world's total output. In recent years, in the rapid development of aquatic feed varieties, especially the most rapid development of expanded feed, aquatic feed industry has become a bright spot and growth point.

                A number of experiments have shown that expanded feeds mainly improve starch and energy digestibility, with relatively small effects on protein digestibility, probably due to the existence of energy (carbohydrate) saving effect on protein, which ultimately improves the protein deposition efficiency despite the insignificant improvement in protein digestibility (or small absolute increase in value). In addition, the effect of the expansion process on the digestibility and utilization of nutrients is an issue that has received general attention.