The Crustawohl project focuses on welfare to optimize whiteleg shrimp farming in RAS systems. Chronic stress is investigated to discover some reliable markers. Stress experiments based on stocking density, nitrates exposition and exuviae removal will be carried out. Findings will be tested in the project partner’s OCEANLOOP farm, at a larger scale environment. The project implies a wide range of analyses in the field of health observation, histology, physiology, genomics and shrimp behavior. The final goal is to produce the first shrimp welfare index, that farmers might use as a reference to the early recognition of anomalous conditions.

Please feel free to contact Paolo.Gamberoni@awi.de for further information

CRUSTAWOHL - QUESTIONNAIRE FOR SHRIMP EXPERTS

Your data will be handled anonymously and stored in accordance with euroshrimp GDPR rules.

1. WHICH AQUACULTURE SYSTEM DO YOU HAVE IN YOUR FACILITY?

2. WHICH SYSTEM COMPONENTS DO YOU CHECK DURING YOUR ROUTINE?

3. HOW OFTEN DO YOU CHECK THESE ELEMENTS?

System components

Animal health

3.1 AT WHAT TIME?

4. DO YOU HAVE AN ONLINE MONITORING SYSTEM WITH REMOTE ALARM NOTIFICATIONS?

5. HOW OFTEN DO YOU CHECK THESE WATER QUALITY PARAMETERS?

Temperature

pH

Dissolved oxygen

Salinity

Nitrogen forms (ammonia, nitrites, nitrates)

Alkalinity

CO2

Phosphates

Others. Please specify description and frequency inside the comment box.

6. WHAT DO YOU CONSIDER AS OPTIMAL VALUES FOR SHRIMP FARMING (GROW OUT STAGE)?

Temperature

Salinity

pH

Alkalinity (CaCO3)

CO2 concentration

7. WHAT IS THE NITRATES RANGE YOU NORMALLY HAVE IN YOUR FARM AT GROW OUT STAGE?

8. DO YOU RECORD THESE OBSERVATIONS ON YOUR CHECKLISTS?

8.1 HOW OFTEN?

9. DO YOU USE HABITATS/ SUBSTRATES/ TRAYS?

10. HOW WOULD YOU DEFINE THESE DIFFERENT DENSITIES (IN kg/m² ) AT GROW-OUT STAGE (SIZE 10 TO 20g, AS RELATES TO YOUR SYSTEM)?

0.2 kg / m2

0.5 kg / m2

1 kg / m2

2 kg / m2

5 kg / m2

8 kg / m2

10.1 HOW WOULD YOU DEFINE THESE DIFFERENT DENSITIES (IN kg / m³ ) AT GROW-OUT STAGE (SIZE 10 TO 20g, AS RELATES TO YOUR SYSTEM)?

3 kg / m3

5 kg / m3

10 kg / m3

15 kg / m3

20 kg / m3

11. DO YOU NOTICE ANY OF THESE BIOLOGICAL CHANGES? IN WHICH PROPORTION?

Shortened antennae

Lesions in rostrum, exoskeleton, musculature

Melanosis

Gills erosion

Eye cataract, lesion

Luminescence in darkness

Uropods redness

Others (please, specify)

12. WHICH ABNORMAL BEHAVIOURS DO YOU OBSERVE IN SHRIMPS? PLEASE TICK.

13. DO YOU REMOVE SHRIMP EXUVIA?

13.1 HOW DO YOU REMOVE IT?

14. DO YOUR SHRIMPS EAT THE EXUVIA?

15. WHAT NEGATIVELY INFLUENCES YOUR SHRIMPS WELFARE? (OPEN QUESTION).

16. HOW DO YOU HOPE THIS PROJECT COULD IMPROVE WELFARE IN YOUR FARM? (OPEN QUESTION).

17. WHICH PROJECT OUTCOME WOULD BE MORE EFFECTIVE FOR YOU?

Thank you for your time!

Categories:

Christopher

Euroshrimp website administration

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