Bøger af Sarallah Zarei

The growing trend of the world's population and the subsequent increase in protein needs have caused humans to consume aquatics, including fish. Also, the reduction of human aquatic resources has prompted him to take measures for the extensive breeding of aquatic animals in small and limited aquatic environments. Today, the demand for fish consumption is increasing in all parts of the world. For this reason, rapid progress in research programs will be needed, especially in the field of reproduction, breeding, nutrition, genetics and management of breeding systems. Global demand for consumption of fish and marine products is influenced by three factors: Population growth, income and price. It is predicted that the global demand for fish and seafood consumption will reach more than 100 million tons in the next few years (FAO, 2008). In order to make more use of production systems, we should look for solutions such as breeding, improving nutrition, or correct breeding management. Meanwhile, breeding, which is done to change the genetic capacity for the desired economic traits, is of particular importance.