Fry production, induced breeding practices and cost-profit analysis of the hatcheries of Rajshahi district in Bangladesh

Aktar, Naima; Bhuiyan, Abdus Salam; Islam, M. N.

doi:10.17017/jfish.v2i3.2014.61

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…In recent years, catfish farming is gaining popular throughout India and adjacent countries because of several advantages over traditional species used in aquaculture (e.g. Galib et al 2013;Aktar et al 2014). In India, among the different species of catfish, Clarias batrachus, C. gariepinus, Heteropneustus fossilis, Pangasius pangasius, P. hypophthalmus, P. sutchi, Ompok pabda and Wallago attu are notable (Ayyappan et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Transmission and pathology of Streptococcus inane in monosex Nile tilapia (Oreochromis niloticus) in aquaculture of Bangladesh

et al. 2014

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Streptococcus iniae is a major fish pathogen, recently emergent outbreaks were recorded in commercially cultured monosex Nile tilapia (Oreochromis niloticus) result in significant losses termed “streptococcosis”-causes unusual appearances with multi-focal pin-point haemorrhages, abscesses, necrosis and ascites in skin, fin, muscle, liver, spleen, kidney, blood, interstitial fluid specially in central nervous system and brain. This disease was more prevalent (>26%) at summer when the water temperature was approximately >25oC, percentage of mortality was higher >41% during the overcrowding and improper water chemistry. Raised levels of glucose and ammonium in blood serum causes reduced number of free blood cells released into the haemolymph to stomach and gut, result in refrain from eating in diseased tilapia. Stocking density (200 fish/decimal; class IV) had significant effect (P<0.01) on the total production (5,000 to 5,500 kg/ha). S. iniae in the circulating blood cells, extra-tubular haemal spaces containing blood vessels, fixed phagocytes in the hepatopancreas (gastrointestinal tract), bacteria-like particles in the brain tissue, vacuum and necrosis in hepatocytes revealed with histopathology. In vitro study revealed that cohabitation of dead or infected fish with healthy fish resulted infection (horizontal transmission mechanism) to the healthy fish.

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Section: Introductionmentioning

confidence: 99%

Transmission and pathology of Streptococcus inane in monosex Nile tilapia (Oreochromis niloticus) in aquaculture of Bangladesh

et al. 2014

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“…In case of rui, catla, grass carp and common carp, 0.5 mg/kg, and silver carp, bighead carp, 0.75 mg/kg body weight of PG for first dose in female and 1-2 mg PG/kg body weight in male fishes were injected. Akter et al [14] and Akter et al [15] adopted more or less the similar practices for induced breeding in various fishes. For the 1st and 2nd dose, PG of 0.25 mg/kg and 4 to 4.5 mg/kg, respectively was used for sharpunti and bata.…”

Section: Pg Doses Used For Induced Breedingmentioning

confidence: 99%

Induced Breeding of Freshwater Fishes and Cost Benefit Analysis of a Selected Fish Hatchery in Jashore, Bangladesh

Biswas¹,

Choudhury²,

Farid³

et al. 2021

ARRB

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An investigation was carried out to know the induced breeding techniques of some firewater fish species such as rui (Labeo rohita), catla (Catla catla), silver carp (Hypophthalmichthys molitrix), grass carp (Ctenopharyngodon idella), common carp (Cyprinus carpio), bighead carp (Hypophthalmichthys nobilis), sharpunti (Puntius sarana) and bata (Labeo bata) at Ma Fatima Fish Hatchery in Chanchra, Jashore, Bangladesh. The cost-benefit analysis was also performed on this hatchery for three months from May to July, 2016. The brood fishes purchased from different local sources were used for spawning. The hatchery mainly practiced induced breeding by maintaining proper age and weight of brood stock during spawning. The ranges of fertilization and hatching rates of the experimental fishes were 80.04±1.44 % to 94.35±0.54% and 75.34±3.49% to 88.68±2.76%, respectively. Total spawn production was 960, 862 and 734 kg, and the total revenue income from spawn sell was BDT 2,883,500, 2,355,100 and 1,844,800 (BDT 85 = 1 US$) in May, June and July, respectively. Estimated capital cost was BDT 87,90,000, while the operating costs were BDT 1,810,650; 1,555,105 and 1,267,680 in May, June and July, respectively. The calculated cost-benefit ratios in May, June and July were 1.59, 1.51 and 1.46, respectively. The hatchery got the highest net profit of BDT (Bangladeshi Taka) 1,041,906 in May due to the highest production and higher price of spawn, and the lowest profit of BDT 546,176 was obtained in July. So, May was found to be the peak breeding month of Ma Fatima Hatchery. The estimated cost-benefit ratio indicated that the spawn production through induced breeding techniques was profitable for the hatchery owners.

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Fry production, induced breeding practices and cost-profit analysis of the hatcheries of Rajshahi district in Bangladesh

Cited by 2 publications

References 6 publications

Transmission and pathology of Streptococcus inane in monosex Nile tilapia (Oreochromis niloticus) in aquaculture of Bangladesh

Transmission and pathology of Streptococcus inane in monosex Nile tilapia (Oreochromis niloticus) in aquaculture of Bangladesh

Induced Breeding of Freshwater Fishes and Cost Benefit Analysis of a Selected Fish Hatchery in Jashore, Bangladesh

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