Participant organizations (WP leader in bold): P1. HCMR, P2. FCPCT, P8. IEO, P15. ULL, P27. FORKYS and P28. CANEXMAR
In this WP rearing methodologies for the cage rearing of the greater amberjack will be developed with emphasis on (a) the cage technology, (b) the feeding method and (c) the husbandry practice.
Task 21.1 Development of rearing method in cages
Task 21.2 Development of feeding methods. Test of different feeding methods including estimation of daily rhythm and frequency be tested with individuals at different developmental stages of juveniles (5 g and 200 g individuals).
Task 21.3 Development of appropriate husbandry practise
In this WP rearing methodologies for the cage rearing of the greater amberjack will be developed with emphasis on (a) the cage technology, (b) the feeding method and (c) the husbandry practice.
Task 21.1 Development of rearing method in cages
- Subtask 21.1.1 Effect of rearing volume on performance. Trials will be performed in commercial cages. Growth performance will be estimated together with other controls (muscle quality, haematological, immunological and hormonal evaluation).
- Subtask 21.1.2 Effect of cage type on performance. A comparison of surface and submerged cages will be performed in trials with commercial cages.
Task 21.2 Development of feeding methods. Test of different feeding methods including estimation of daily rhythm and frequency be tested with individuals at different developmental stages of juveniles (5 g and 200 g individuals).
- Subtask 21.2.1 Definition of feeding pattern for 5 g fish. Monitoring will include growth performance, feed efficiency, k index, juvenile quality (morphological aspects) and hematological, histological, biochemical and immunological analysis.
- Subtask 21.2.3 Definition of feeding pattern for 200 g. Monitoring will include growth performance, feed efficiency, k index, juvenile quality (morphological aspects) and hematological, histological, biochemical and immunological analysis.
Task 21.3 Development of appropriate husbandry practise
- Subtask 21.3.1 Determination of minimum-maximum temperature ranges. The trial will be performed with different size individuals. Monitoring will include growth performance, feeding activity, gut transit time, digesta sample analysis and enzyme activity.
- Subtask 21.3.2 Definition of optimal stocking density. Monitoring will include growth performance, feed efficiency, k index, and quality including morphological aspects and haematological, histological, biochemical and immunological studies. Also analysis of oxidative stress enzymes will be evaluated.
