Changes in the aquatic feed industry in North America

OA show ('918 '); [changes in North American aquatic feed industry] according to Ronald W hardy of the United States, the North American aquatic feed industry presents the following major changes: 1 In the 1960s, North America, mainly the United States, exported aquatic feed production equipment and technology to Europe, and then to countries around the world But after the 1990s, North American countries imported technology and equipment from other countries 2 The biggest change is reflected in the evolution from feed granule technology to cook extrusion technology, which was first applied to the cultivation of catfish, and then successively applied to the cultivation of salmon and trout 3 High fat and energy of pellet feed 4 In order to comply with the development trend of feed industry in Europe, the ingredients that cause light pollution to the water environment should also be selected in the feed formula 5 The feed formula with low phosphorus and high efficiency has been developed and is now being used in salmon and trout breeding 6 HACCP (hazard analysis and critical control point) has been implemented in feed production 7 Another important change is to develop special feeds for special purposes, such as those developed for seed conservation and fishery development Qvh (author:)