Báo cáo nghiên cứu khoa học " Status of common carp in Vietnam " pptx

Status of common carp in Vietnam Le Quang Hung Research Institute for Aquaculture No.1, Bac Ninh, Vietnam Results The project investigated at North, Central and South in Vietnam including: State and private hatcheries produce a common carp Farmer rearing and culture a common carp Hatcheries/F armers No % Households 91 68.4 State hatcheries 30 22.6 Private 12 9.0 133 100.0 Total Culture conditions Common carp culture condition Condition 1.50 % Rice-fish 6.77 In pond 12.78 7.89 78.95 Rice-fish Pond Rice-fish and pond Cage/pen Rice-fish and Pond 12.78 Cage/pen 1.50 78.95 Water source Water source used in culture common carp (%) 17.3 Irrigation 3.8 Rain Stream 78.9 Common carp grow-out with other species 2.33 11.24 0.87 3.38 Common 30.88 Grass carp Silver carp Bighead carp 9.03 Rohu Mrigal Tilapia 10.87 Black carp 18.53 3.12 9.75 Soloma Others Culture knowledge in Common carp 29.80 41.72 Self study Media Communication Heritage 5.30 Training 8.61 14.57 Source of common carp seed 14.79 4.23 River, stream Hatcheries 4.93 Traders Others 20.42 55.63 Trader and Hatcherise Common carp breeds cultured 80 57.55 60 40 21.70 20 15.09 5.66 Local Selective Hybrid Others Traders selling seed of carp (%) 100.00 96.19 80.00 60.00 40.00 20.00 3.81 0.00 Yes No Common carp production Some hatcheries established early at 1966 Some hatcheries established at 2005 The most hatcheries established during 1982-1984 A artificial technique for common carp at both state and private hatcheries, re-production 1-3 per year Common carp production Breeding methods: A artificial technique applies for common carp in both state and private hatcheries Common carp re-produce about 1-3/year Feed for mature: Bud rice, soya bean, cassava, muck and pellet feed Density: 0.4-1.0 ind/10m2 Carp seed quality evaluation 25.56 Good Moderate 11.28 Poor No idea 62.41 0.75 Common carp seed demand 2.26 36.84 Increase Decrease No idea Not change 60.15 0.75 Supplied seed to neighbours 1.50 32.33 Very often Rarely Others Some time 65.41 0.75 Change common carp broodstock Change (%) Every year 41.2 year 17.6 3-4 years 32.4 More year 8.8 Broodstock of carp changing and addition about 10-20% in total No broodstock were 64,50% in hatcheries Source of carp brood change Brood common carp addition or change from outside: 57,90% Brood common carp addition or change on farm: 31,60% 10.5 Outside On farm 31.6 Both 57.9 Source of carp brood change Most common carp change or addition in hatcheries source at RIA#1 (69,60%) 4.30 26.10 RIA#1 Other Hungarian strain 69.60 Hatcheries: Use the same carp brood for next breeding season 100.00 89.47 80.00 60.00 40.00 20.00 10.53 0.00 Yes No Thank you ! ...Results The project investigated at North, Central and South in Vietnam including: State and private hatcheries produce a common carp Farmer rearing and culture a common carp Hatcheries/F armers... source used in culture common carp (%) 17.3 Irrigation 3.8 Rain Stream 78.9 Common carp grow-out with other species 2.33 11.24 0.87 3.38 Common 30.88 Grass carp Silver carp Bighead carp 9.03 Rohu... Broodstock of carp changing and addition about 10-20% in total No broodstock were 64,50% in hatcheries Source of carp brood change Brood common carp addition or change from outside: 57,90% Brood common