Johan A.J. Verreth

TL;DR: From the point of view of exogenous enzyme contribution to fish larvae, there seems to be no difference whether feeding decapsulated cysts or newly hatched nauplii, since no difference in qualitative protease composition was found during the first 25 h of Artemia development.

TL;DR: According to the hepatocyte structure, the egg diets provide all essential nutrients, and it is hypothesized that the low growth is caused by a decreased feed intake which again may be related to the high fat content of the diets.

TL;DR: Welfare of African catfish seemed impaired at both the lowest and highest density, and an interaction effect between stocking density and additional stress was shown.

TL;DR: Dietary inclusion of viscous grains increases digesta viscosity in African catfish, and intestinal fermentation activity, digesta dry matter content and nutrient digestibility seem to be affected beyond a certain threshold for viscosities.

TL;DR: The results show that the effects of stocking density are not uniform throughout the growth cycle, and differences need to be taken into account by husbandry practices to assure that high welfare standards are maintained throughout the life cycle of the fish being cultured.