TILAPIA FARMING IN HUNGARY WITH THE USE OF GEOTHERMICAL WATER - - PowerPoint PPT Presentation

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TILAPIA FARMING IN HUNGARY WITH THE USE OF GEOTHERMICAL WATER - - PowerPoint PPT Presentation

Feb 09, 2023 679 likes •1.04k views

TILAPIA FARMING IN HUNGARY WITH THE USE OF GEOTHERMICAL WATER SUPPLY Lszl Szathmri, 1 Ferenc Radics, Barna Fodor, 2 KatalinDank 3 UNIVERSITY OF WEST HUNGARY, FACULTY OF AGRICULTURE AND FOOD SCIENCES H-9200 Mosonmagyarvr Vr 4. 1

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SLIDE 1

TILAPIA FARMING IN HUNGARY WITH THE USE OF GEOTHERMICAL WATER SUPPLY

László Szathmári,1 Ferenc Radics, Barna Fodor,2 KatalinDankó3

UNIVERSITY OF WEST HUNGARY, FACULTY OF AGRICULTURE AND FOOD SCIENCES H-9200 Mosonmagyaróvár Vár 4.1 SZARVAS - FISH Kft. H-5540 Szarvas I. külterület 57.2 ARANYKÁRÁSZ Bt. H-5540 Szarvas Jókai u. 40/B.3

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SLIDE 2

Required Features of Modern Fish Products

  • Boneless
  • White or pink colour
  • Firm texture
  • Slight flavour and odour
  • Standard size
  • Continuous quality and supply over the

whole year

  • Ability to bio-production
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SLIDE 3

Hungary is reach in Thermal Spring Water Sources.

  • Geothermical gradient is uniquely high in

the lowland (20 m/oC).

  • 1300 springs in operation ensuring warm

water of 35-93oC.

  • Most of them are suitable for aquaculture

activities

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SLIDE 4

Water Characteristics at the Site

Water temperature 23-25 oC pH 7,7-8,0 Conductivity 816 µs/m HCO3 545 mg/l COD 8,2 NO3 1,5 mg/l NH4 0,3 mg/l The required dissolved oxigen content (95% saturation) is ensured by aeration systems. (paddle wheels, propeller tipe aerators)

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SLIDE 5

TUKA Fish Farm

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SLIDE 6

Spawning Tanks

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SLIDE 7

Results of Spawnings

Spawning tank 1 Spawning tank 2 Spawning tank 3 Date

  • f

stocking 1-2nd Aug 2001 21-22nd Aug 2001 29th July 2001 Number

  • f

breeders 110 110 650 Sex ratio ♀:♂ 1:1 4:1 1:1 Date

  • f

harvesting 8-10th Sept 8-10th Sept 11th Sept Harvested fingerlings pcs 36 000 38 000 85 000 Harvested f. sizes 1,0-6,0 cm 2,0-2,5 cm 3,0-12,0 cm

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SLIDE 8

Targets of Feeding Investigations

  • Determination of feeding rate using a

given food formula

  • Testing

the influence

  • f

feeding frequency

  • Optimalization
  • f

crude protein content during the raising of tilapia fingerlings

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SLIDE 9

Stocking Material

Chitralada parent stock of Nile tilapia (Oreochromis niloticus L.)

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SLIDE 10

Variation of FCR at Different Daily Feeding Rates

1 2 3 4 5 6 7 8 9 10 2 4 6 8 10 daily feeding rate % % SFR % SGR % FCR %

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SLIDE 11

Results of Different Feeding Rates

Optimal food dose: SFRopt 4,98%/day Growth at opt.food dose: SGRopt 3,21%/day FCR at opt. food dose: FCRopt 1,55 kg/kg

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SLIDE 12

Feeding Frequency, FCR and SGR

Tank No. Number Feeding freq. Feedings/day FCR (kg/kg) SGR (%) 1 1 0,96 3,89 2 3 0,71 5,17 3 5 0,71 5,07 4 7 0,74 5,01 5 1 0,86 4,21 6 3 0,75 4,84 7 5 0,71 4,97 8 7 0,69 5,15

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SLIDE 13

Conclusions of Testing Feeding Frequency

  • Feeding is is more efficient in small

doses

  • Frequent feeding with smaller doses

results balanced water quality

  • Proportioner feeders filled twice a day

ensure the distribution of food in small doses

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SLIDE 14

Variation of FCR and SGR at Different Protein Levels in Diet

Crude protein % FCR kg/kg SGR % 31 1,04 4,25 35 0,96 4,50 39 0,98 4,49 43 0,95 4,63 47 0,97 4,50

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SLIDE 15

Coherence of Crude protein Content of Food and FCR

5 10 15 20 25 30 35 40 45 50 1 2 3 4 5 protein content % 0,9 0,92 0,94 0,96 0,98 1 1,02 1,04 1,06 FCR kg/kg

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SLIDE 16

Coherence of Crude Protein Content of Food and SGR

5 10 15 20 25 30 35 40 45 50 1 2 3 4 5 Protein Content % 4 4,1 4,2 4,3 4,4 4,5 4,6 4,7 SGR %/day

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SLIDE 17

Various Diet Formulas

Components (%) Diet formulas 1. 31% 2. 35% 3. 39% 4. 43% 5. 47% Fish meal Meat meal Blood Extruded soybean Wheat Vegetable oil Minerals Vitamins 6 22 5 10 53 2 1 1 8 28 5 10 45 2 1 1 15 30 5 10 36 2 1 1 24 28 5 10 29 2 1 1 30 30 5 10 21 2 1 1 Total (%) Crude protein (%) 100 30,81 100 34,65 100 39,16 100 42,81 100 46,81

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SLIDE 18

Optimal and Economic Protein Content

  • The best growth rate was observed in the

case of feeding pelleted diet containing 43% of crude protein

  • The specific price of lower

protein content diets compensates the unfavourable values

  • f

feeding indicators.

  • Rearing

food formula contains 29% of crude protein

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SLIDE 19

Results of Tank Rearing

Rearing period days Stocking g/fish Harvesting g/fish

  • Surv. rate

% FCR kg/kg 208 41 327 97,20 1,57 122 58 181 97,17 1,80 122 164 384 99,41 1,69

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SLIDE 20

Aeration Tank

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SLIDE 21

Water Mixer Tank

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SLIDE 22

Aeration In Tilapia Rearing Tank

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SLIDE 23

Rearing Tanks in Dark

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SLIDE 24

Waiting for Food

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SLIDE 25

Market Size Tilapia

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SLIDE 26

Processing Unit

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SLIDE 27

Gutting Line

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SLIDE 28

Cleaning Table

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SLIDE 29

Ice Flake Maker

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SLIDE 30

Cold Store

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SLIDE 31

Market Size Tilapia during processing

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SLIDE 32

Cleaned and Gutted Tilapia Before Packing

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SLIDE 33

Fresh Tilapia Fillets in MAP

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SLIDE 34

THANK YOU FOR THE KIND ATTENTION !