This is the time, when most of the factors effect on the welfare of farmed fish and people those are against fish farming come with their strong opinion against salmon farming and raise questions. During this growth period, some factor including the procedure of handling, high crowding of fish, outbreak of diseases, competition about food, stress and aggression, water quality, injuries during disease treatment (bathing in chemicals) and mortality are observed (Håstein et al., 2005). Overcrowding of fish at farm as described above is the main cause of poor fish welfare. Several lesions appear on the skin of fish due to overcrowding and the risk of spread of diseases increased including viral, bacterial and parasitic diseases. As Ashley mentioned (2007) that overcrowding brought aggression, reduction in swimming, and competition food increased risk of immunosuppression, fin and eye injuries, increase risk of infection and ultimately results of high mortality at the fish
This is the time, when most of the factors effect on the welfare of farmed fish and people those are against fish farming come with their strong opinion against salmon farming and raise questions. During this growth period, some factor including the procedure of handling, high crowding of fish, outbreak of diseases, competition about food, stress and aggression, water quality, injuries during disease treatment (bathing in chemicals) and mortality are observed (Håstein et al., 2005). Overcrowding of fish at farm as described above is the main cause of poor fish welfare. Several lesions appear on the skin of fish due to overcrowding and the risk of spread of diseases increased including viral, bacterial and parasitic diseases. As Ashley mentioned (2007) that overcrowding brought aggression, reduction in swimming, and competition food increased risk of immunosuppression, fin and eye injuries, increase risk of infection and ultimately results of high mortality at the fish