Digestive proteases of three carps Catla catla, Labeo rohita and Hypophthalmichthys molitrix: partial characterization and protein hydrolysis efficiency

2007 ◽  
Vol 13 (5) ◽  
pp. 381-388 ◽  
Author(s):  
S. KUMAR ◽  
F.L. GARCIA-CARREÑO ◽  
R. CHAKRABARTI ◽  
M.A.N. TORO ◽  
J.H. CÓRDOVA-MURUETA
Keyword(s):  
Labeo Rohita ◽  
Partial Characterization ◽  
Catla Catla ◽  
Protein Hydrolysis ◽  
Hypophthalmichthys Molitrix ◽  
Digestive Proteases

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

2014 ◽  
Vol 2 (3) ◽  
pp. 209
Author(s):  
Naima Aktar ◽  
Abdus Salam Bhuiyan ◽  
M Nazrul Islam
Keyword(s):  
Labeo Rohita ◽  
Ctenopharyngodon Idella ◽  
Catla Catla ◽  
Hatching Rate ◽  
Hypophthalmichthys Molitrix ◽  
Total Cost ◽  
Profit Analysis ◽  
Net Profit ◽  
Profit Status ◽  
Breeding Practices

This study was conducted on the 13 hatcheries of Rajshahi district from March to December 2013 to know about the fry production status, induced breeding practices and cost-profit status. Average fry production of Labeo rohita, 93.38±83.32 kg, Catla catla, 62.00±60.84 kg, Cirrhinus cirrhosus, 77.46±58.61 kg, L. calbasu, 14.20±14.60 kg, L. bata, 53.73±50.56 kg, L. gonia, 10.00±0 kg, Heteropneustes fossilis, 5.00±0 kg, Clarias batrachus, 20.00±0 kg, Hypophthalmichthys molitrix, 149.77±138.45 kg, Aristichthys nobilis, 104.54±148.11 kg, Ctenopharyngodon idella, 19.20±15.35 kg, Cyprinus carpio 108.08±77.39 kg and Barbonymus gonionotus, 23.10±14.04 kg were recorded in the surveyed hatcheries. Two types of hormone injections PG (pituitary gland) and HCG (Human chorionic gonadotropin) were used for induced breeding. The rate of 1st dose of injection of PG varied from 1 to 2 mg/kg and HCG from 100-150 IU/kg and the rate of 2nd dose of injection of PG varied between 5 and 8 mg/kg. The incubation period and hatching rate in different fish species varied from 10 to 72 hours and 55% to 80%, respectively. The average total cost, gross return and net profit of the hatcheries were 0.667±0.798, 1.152±1.636 and 0.485±0.846 million BDT respectively.

scholarly journals Management and socio-economic conditions of fishermen of the Baluhar Baor, Jhenaidah, Bangladesh

2013 ◽  
Vol 1 (1) ◽  
pp. 30 ◽  
Author(s):  
BM Shahriar Abdullah-Bin-Farid ◽  
Shuvagato Mondal ◽  
Kulsum Akter Satu ◽  
Ripon Kumar Adhikary ◽  
Debasish Saha
Keyword(s):  
Low Income ◽  
Labeo Rohita ◽  
Village Doctor ◽  
Ctenopharyngodon Idella ◽  
Oxbow Lake ◽  
Economic Conditions ◽  
Catla Catla ◽  
Annual Income ◽  
Hypophthalmichthys Molitrix ◽  
Improved Technology

This study was conducted on the management of the Baluhar Baor and fishermen’s socio-economic conditions of the Baor in Jhenaidah district, Bangladesh. Data were collected by interviews, FGDs and CIs with key informants. This Baor was managed under Oxbow Lake Project-1 of Department of Fisheries of Bangladesh government. Hypophthalmichthys molitrix, Labeo rohita, Catla catla, Cirrhina cirrhosus, Cyprinus carpio and Ctenopharyngodon idella were commonly stocked at the composition of 34%, 13%, 12%, 12%, 15% and 14%, respectively. Kochal, Komor and Chack fishing were used for harvesting and yearly production was 750 kg/ha. While studying the socio-economics, 58% fishermen were lived in joint families. 78% fishermen used Kancha sanitary latrine which reflects their poor hygienic condition but they used tubewell for drinking water. 58% fishermen were with 0.045 hectare lands and 74% lived in Kancha house. The annual income varied from BDT 15,000 to 60,000. Education level was found very low and only 18% completed their primary education. Majority fishermen (82%) visited village doctor for health services due to low income and lack of knowledge. All fishermen were fully dependent on Baor fishery for their livelihood. It is possible to uplift their socio-economic by managing the Baor with improved technology.

Improved production from seasonal ponds in Northwest Bangladesh.

2020 ◽  
Author(s):  
Christopher Morrice
Keyword(s):  
Labeo Rohita ◽  
Silver Carp ◽  
Ctenopharyngodon Idella ◽  
Soil Types ◽  
Catla Catla ◽  
Cow Manure ◽  
Hypophthalmichthys Molitrix ◽  
Triple Superphosphate ◽  
Seasonal Ponds ◽  
Silver Barb

Abstract A polyculture system was developed that was affordable to poor owners of seasonal ponds with a mean annual culture period of 200 days and situated on low quality soil types. Three main species were used silver carp (Hypophthalmichthys molitrix), silver barb (Barbonymus gonionotus) and common carp (Cyprinus carpio). Stocked in smaller numbers wererohu (Labeo rohita), catla (Catla catla), mrigal (Cirrhinus cirrhosus)and grass carp (Ctenopharyngodon idella). Pond preparation and management were dependent on the use of lime, cow manure, triple superphosphate (TSP) and urea. Duckweed, green vegetables and rice bran were the principle supplementary feeds. This system raised production levels from 740 kg ha-1 to 2195 kg ha-1 with a cost:benefit ratio of 1:3.8.

scholarly journals Investigation on fish health and diseases in rural pond aquaculture in three districts of Bangladesh

2014 ◽  
Vol 11 (2) ◽  
pp. 377-384 ◽  
Author(s):  
MM Hasan ◽  
MAR Faruk ◽  
IZ Anka ◽  
MAK Azad
Keyword(s):  
Health Management ◽  
Group Discussion ◽  
Silver Carp ◽  
The Body ◽  
Catla Catla ◽  
Hypophthalmichthys Molitrix ◽  
Fish Health ◽  
Pond Aquaculture ◽  
Pangasianodon Hypophthalmus ◽  
Treatment Measures

The present study was conducted to know the culture strategies and fish health and disease problems in pond aquaculture in Mymensingh, Bogra and Pabna districts of Bangladesh. Questionnaire interview and participatory rural appraisal tools like focus group discussion (FGD) were conducted with selected fish farmers. In total 90 farmers were interviewed and 9 FGD sessions were conducted. Most of the respondents practiced carp and pangas polyculture and they had disease problems in their ponds. Prevalence of fish disease varied with cultured species and locations. The most prevalent diseases as reported by the farmers were pop eye (57.78%), ventral reddening (55.55%), tail and fin rot (48.89), hemorrhagic lesion over the body surface (45.56%), dropsy (40%), gill rot (40%), white spot (40%) and epizootic ulcerative syndrome or EUS (33.33%). According to farmers opinion most susceptible species to disease was silver carp, Hypophthalmichthys molitrix (57.78%); followed by mrigal, Cirrhinus cirrhosus (50%); catla, Catla catla (47.78%); sarputi, Barbodes gonionotus (47.78%); rui, Labio rohita (42.22%) and pangas, Pangasianodon hypophthalmus (42.22%). Higher mortality was found in pangas (53.56%). Clinically, pangas, koi and sarputi were found severely affected. Most of the farmers used some treatment measures against disease problems. This study also highlited some fish health management problems in pond aquaculture. Further studies should include identification and characterization of pathogens involved in different types of diseases in pond aquaculture. DOI: http://dx.doi.org/10.3329/jbau.v11i2.19944 J. Bangladesh Agril. Univ. 11(2): 377-384, 2013

scholarly journals Status of formalin in commercially important fishes from the northeastern region of Bangladesh

2020 ◽  
Vol 32 (1) ◽  
pp. 23-28
Author(s):  
TOFAEL AHMED SUMON ◽  
MD. ASHRAF HUSSAIN ◽  
FARJANA AKHTER MITA ◽  
JOYANTA BIR ◽  
SARKER MOHAMMED IBRAHIM KHALIL
Keyword(s):  
Labeo Rohita ◽  
Industrial Research ◽  
Catla Catla ◽  
Northeastern Region ◽  
Significant Difference ◽  
Fish Samples ◽  
The Status ◽  
Commercially Important ◽  
Tenualosa Ilisha

The study revealed the status of formalin used in four commercially important fishes namely Rohu (Labeo rohita), Catla (Catla catla), Mrigal (Cirrhinus cirrhosus) and Hilsa (Tenualosa ilisha) from Sylhet and Moulvibazar district for a period of four months from April to July 2016. A total of 100 fish samples from different town and village markets were collected and analyzed instantly on the market to detect the presence of formalin by using a kit developed by Bangladesh Council of Scientific and Industrial Research (BCSIR). Among the analyzed fishes 46.7, 26.7, 20.0 and 13.3% of Rohu, Catla, Mrigal and Hilsa, respectively were found treated with formalin from Sylhet district. Similarly, formalin was also detected in 40, 20, 20 and 20% of investigated Rohu, Catla, Mrigal and Hilsa from Moulvibazar district, individually. There was no significant difference in formalin used between town and village market, whereas a significant difference in application of formalin in domestic and imported fishes except Catla has been identified. Two-third of imported Rohu (66.7%) was found formalin positive followed by Hilsa (44.4%), Mrigal (40%) and Catla (35.7%). Amongst the domestic fishes, presence of formalin was detected in 27.8, 18.8, 10.0 and 4.8% in Rohu, Catla, Mrigal and Hilsa, separately. This devastating use of formalin in food fishes should be banned through proper enactment of the existing laws of the country, as well as timely and appropriate implementation of government monitoring is mandatory to combat the unethical formalin use.

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