21. 25-30% of the feed provided to fish is absorbed and the rest is excreted in the form of solid and liquid waste into the
water
INTENSIVE AQUACULTURE POLLUTES?
23. ECOSYSTEM-BASED INTENSIVE FARMING SYSTEMS
EMERGING
• RAS
• ZERO EFFLUENT SYSTEMS (IPRS)
• PLANT INTEGRATED FARMING SYSTEMS
• AQUAPONICS
• INTEGRATED MULTITROPHIC SYSTEMS
• BIOFLOC-BASED ZERO WATER EXCHANGE
• BIOMIMICRY SYSTEMS
• REDUCING PRODUCTION COST
• EFFICIENT WASTE RECYCLING
24. CAGES CULTURE:
THE METHOD OF FISH FARMING
OF FLOATING CAGES SYSTEM IS VERY
SUITABLE FOR SPACES AND DEEP AREAS
RANGING BETWEEN 25- 90M. THE CAGE
SITE SHOULD BE PROTECTED FROM
STORMS, WINDS, HIGH WAVES AND SEA
CURRENTS AND SHOULD BE AWAY FROM
SOURCES OF POLLUTION .THE SITE
SHALL NOT BE PENETRATED WITHIN THE
SEA BORDERS, BUT SHALL BE SELECTED
AS SOON AS POSSIBLE FROM THE
COAST OR ALONG THE ISLANDS FOR
EASY SERVICE. ALSO, THE SITE SHOULD
BE SANDY OR SILT IN NATURE OR
ROCKS.
30. POND-RECIRCULATING SYSTEM FOR SHRIMP
- Production pond & Treatment ponds
- Central sump – To trap Sediments
- Anoxic pond for sludge treatment
- Baffled partitions for sedimentation
- Fish, bivalves, and seaweed stocked for
water quality control
- Clear water flows back to the production
pond
32. •
FISH EXTRACT AND DROPS
•
الرسوبية المخلفات
SETTABLE SOLIDS
:
•
المعلقة المخلفات
SUSPENDED SOLIDS
:
•
GAS AS NH3
9/24/2023
NH3
NH3
NH3
NH3
33. RAS SYSTEMS
THESE SYSTEMS ARE BASED
ON HIGH TECHNOLOGY,
AND REQUIRE HIGH
EXPERIENCE IN OPERATING,
AND UNDERSTANDING THE
MEANING OF WATER
QUALITY AND ITS VARIOUS
MEASUREMENTS.
40. • 5000 FISH/ POND
• 200 G AVERAGE WEIGHT
• 26 O C WATER TEMPERATURE
• 14.200 KG = FEED 1.45% BODY WEIGHT/DAY
• 4 G/DAY = ESTIMATED GROWTH.
يوميا المطلوبة األعالف كمية حساب
1 Kg fish = 4080 kcal DE Feed
Feed
Kg
Gain
Kg
FCR
(4080/DE)
DE
Kcal/Kg
24.4
20
1.27
3200
27.2
20
1.36
3000
29.2
20
1.46
2800
31.4
20
1.57
2600
34
20
1.70
2400