Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1046/j.1365-2095.2000.00120.x
Title (Primary) Heat treatment affects protein quality and protease activity in decapsulated cysts of Artemia when used as starter food for larvae of African catfish Clarias gariepinus (Burchell)
Author García-Ortega, A.; Verreth, J.; van Hoornyck, A.; Segner, H.
Source Titel Aquaculture Nutrition
Year 2000
Department OEC; COE
Volume 6
Page From 25
Page To 31
Language englisch
Keywords Artemia cysts; Clarias gariepinus; fish larvae; protein denaturation; protein quality; proteolytic enzymes
Abstract Decapsulated cysts of Artemia subjected to different heat treatments (40, 60, 80 and 96 °C) were fed to African catfish Clarias gariepinus larvae. Heated cysts, untreated cysts and live Artemia nauplii as control constituted the experimental diets. Protein denaturation and solubility, total alkaline protease and specific trypsin activities in the cyst diets were evaluated. The growth of catfish larvae and the proteolytic activity of larval samples during development were also determined. Heat treatment of cysts increased protein denaturation and decreased protein solubility. The protease activity in the cyst diets decreased with higher heating temperatures. The growth of catfish larvae differed according to the diet; higher fish growth was achieved with nauplii and cysts heated at 40 °C. The digestive enzyme activity in larval samples remained similar in all dietary treatments during larval development. The quality of food protein and the way this protein is processed might be more important for successful larval growth than exogenous enzyme supply.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=7149
García-Ortega, A., Verreth, J., van Hoornyck, A., Segner, H. (2000):
Heat treatment affects protein quality and protease activity in decapsulated cysts of Artemia when used as starter food for larvae of African catfish Clarias gariepinus (Burchell)
Aquacult. Nutr. 6 , 25 - 31 10.1046/j.1365-2095.2000.00120.x