ARTIFICIAL BREEDING AND FARMING OF BARB (“COC” FISH)

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Presentation transcript:

ARTIFICIAL BREEDING AND FARMING OF BARB (“COC” FISH)

INTRODUCTION Flesh of good taste, a speciality of An Giang province Live in moving water environment Diversified feeds, with preference of animals Rare quantity in the wild

COLLECTION OF BROODSTOCKS - Collected from the wild - Farmed in the pond near the place of collection for 15 days - Moved to the Center’s pond by truck. Broodstocks were kept in nylon bags with their fins put inside plastic tube in order to avoid breaking the bags

GROWING BROODSTOCK - Pond area: 2,000m 2 - Pond depth:1.5m -Water change regime is carried out 3 times/day for 20% of the pond water volume - Feeding: with pellet feed Proconco 30-35% Protein, added with snails and crushed squids - Feed portion: 3% of industrial feed, 1%BW of snails and crushed squids

ARTIFICIAL BREEDING SIZE - DT: LH-RHa and pituitary gland - Egg collection, dry fertilization - Egg incubation in tank with aeration and running water of low speed

FRY NURSING - The first nursing stage is carried out in cement tanks for 1 month, with density of 2,500 ind./m 2 - The 2 nd stage is carried out in the earthen pond - Feed for the 1 st stage: nutritional powder Milknilac, moina, broken pellet feeds - Feeds for the 2 nd stage: broken or small pellet feeds

COMMERCIAL GROW-OUT - Grow-out in pond: with density of 1-2 ind./m 2 - Pen culture: 0.2 ind./m 2 - Raft culture: 100 ind./m 2

BREEDING BIOLOGICAL CRITERIA YearMaturation percentage (%) The highest maturation coefficient of female fish (%) Male fishFemale fish

-Floating eggs -Egg size upon spawning: mm -Egg size upon being water-swollen: mm -Eggs hatched after 14 hours at the temperature of 29 0 C. -Relative breeding capacity: 45,000 eggs/kg of female fish BREEDING BIOLOGICAL CRITERIA

INDUCED ARTIFICIAL BREEDING StimulatorPreliminary dose Decisive dose Dosage for male fish Time for effectiveness Pituitary gland (PG) 1 mg2 mg0.56h LH-RHa +PG 0150 µg50 µg6h

RESULTS OF NURSING IN CEMENT TANKS CriteriaUnitResults Nursing densityindividual/ m 2 2,500 Nursing timeDay25 Individual weight Gram0.026 LengthCm1.6 Survival rate%80

RESULTS OF NURSING IN PONDS CriteriaDensity of 180 individuals/m 2 Density of 90 individuals/m 2 Density of 45 individuals/m 2 Quantity of 25-day fish 200,000130,00030,000 Nursing time (day) Weight (g)0,7 1,7 Length4,5 6,0 Survival rate505856

RESULTS OF COMMERCIAL GROW-OUT Farming system Stocking density FeedsWeight after 15 months Survival rate ProductivityFCR Raft farming + tra catfish 75c/m 3 Processed feed kg/m Pond farming + fish of other species 1 con /m 3 Processed feeds + agricultural by- products tons/ha4.9 Pen system + red Tilapia 0.2Industrial feeds 254