caa a22 4500 605464308 CHVBK 20210128100257.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10499-015-9903-x doi (NATIONALLICENCE)springer-10.1007/s10499-015-9903-x Effect of weaning age and the use of different sized Artemia nauplii as first feed for jade perch Scortum barcoo [Elektronische Daten] [Stijn Van Hoestenberghe, Mathieu Wille, Evelien De Swaef, Bruno Goddeeris, Nancy Nevejan] The first days of exogenous feeding are crucial for larval recruitment. A correct first prey item and the determination of the optimal weaning age, can reduce labor cost and fish mortality to a great extent. This study was conducted to evaluate the use of small and regular Artemia fransiscana (AF and EG Artemia, Inve, Belgium) as first feed for jade perch Scortum barcoo, and to determine the minimum required duration of this life feed phase before transition to dry feed can occur. Therefore, we compared first feeding of 3days AF nauplii instar I with 3days of EG nauplii instar I and evaluated whether the optimal weaning age for jade perch larvae was at 7, 10, 13 or 16days post-hatching (DPH). The study was performed in 25-L tanks in a recirculating system and lasted for 21days (4-24DPH). Growth, survival and tissue fatty acid composition of the larvae in the different treatments were analyzed. Results indicate that, after the start of exogenous feeding at 4days DPH, jade perch larvae require a minimum of 9days of live feed until 12DPH. Co-feeding ideally starts on 10DPH. Larvae fed AF Artemia for the first 3days showed a significantly faster growth than larvae fed EG Artemia, although their survival was lower. Gape width of larvae at 3 and 6DPH was measured, and implications for prey size are discussed. Springer International Publishing Switzerland, 2015 EG nationallicence AF nationallicence First feeding nationallicence Scortum barcoo nationallicence Prey selection nationallicence Van Hoestenberghe Stijn Department of Biosystems, University of Leuven, Kasteelpark Arenberg 30, PO Box 2456, 3001, Heverlee, Belgium aut Wille Mathieu Laboratory of Aquaculture and Artemia Reference Center, Ghent University, Rozier 44, 9000, Ghent, Belgium aut De Swaef Evelien Department of Morphology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium aut Goddeeris Bruno Department of Biosystems, University of Leuven, Kasteelpark Arenberg 30, PO Box 2456, 3001, Heverlee, Belgium aut Nevejan Nancy Laboratory of Aquaculture and Artemia Reference Center, Ghent University, Rozier 44, 9000, Ghent, Belgium aut Aquaculture International Springer International Publishing 23/6(2015-12-01), 1539-1552 0967-6120 23:6<1539 2015 23 10499 https://doi.org/10.1007/s10499-015-9903-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10499-015-9903-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Van Hoestenberghe Stijn Department of Biosystems, University of Leuven, Kasteelpark Arenberg 30, PO Box 2456, 3001, Heverlee, Belgium aut NATIONALLICENCE 700 1- Wille Mathieu Laboratory of Aquaculture and Artemia Reference Center, Ghent University, Rozier 44, 9000, Ghent, Belgium aut NATIONALLICENCE 700 1- De Swaef Evelien Department of Morphology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium aut NATIONALLICENCE 700 1- Goddeeris Bruno Department of Biosystems, University of Leuven, Kasteelpark Arenberg 30, PO Box 2456, 3001, Heverlee, Belgium aut NATIONALLICENCE 700 1- Nevejan Nancy Laboratory of Aquaculture and Artemia Reference Center, Ghent University, Rozier 44, 9000, Ghent, Belgium aut NATIONALLICENCE 773 0- Aquaculture International Springer International Publishing 23/6(2015-12-01), 1539-1552 0967-6120 23:6<1539 2015 23 10499