International journal of aquaculture and fishery sciences最新文献

{"title":"An overview on hydro-biology and management of Kaptai Lake Fisheries, Bangladesh","authors":"Lima Rabina Akther, Ali Azhar, Rahman Md Khaled, Islam Md Shoebul, Moniruzzaman Md, Tamanna Tamina Akhtar","doi":"10.17352/2455-8400.000089","DOIUrl":"https://doi.org/10.17352/2455-8400.000089","url":null,"abstract":"Kaptai Lake is the largest artificial Lake in Bangladesh. This Lake provides most of the fish stock for the people of the Hill tract. Over the years, due to various anthropogenic and environmental reasons population of Indian Major Carp (IMCs) has declined, and some native species are on the way to extinction in this Lake. Considerable research has been conducted on different aspects of lake fishery with hydrology, culture technology, fish diversity, management, threats, and mitigations, but no such consolidated report on the overall overview is not available on this Lake. This review paper has been prepared to combine all the available information along the information gap, further study of which will be helpful to enhance the Indian major carp catch and sustainable management of fish stock.","PeriodicalId":470155,"journal":{"name":"International journal of aquaculture and fishery sciences","volume":"40 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134910119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Afrostyrax lepidophyllus fruit bean powder in feed as a growth activator on the zootechnical performance of Oreochromis sp (red Tilapia) fry in concrete tanks","authors":"Ruben Ngouana Tadjong, Divine Doriane Yemdji Mane, Amandine Dadjodi Erra, Agwah Ebile Dayan, Raphaël Kana Jean, Alexis Téguia","doi":"10.17352/2455-8400.000088","DOIUrl":"https://doi.org/10.17352/2455-8400.000088","url":null,"abstract":"This study focused on the effect of feed supplementation with Afrostyrax lepidophyllus fruit bean powder on some zootechnical performances of Oreochromis sp (red tilapia) fry in concrete tanks. 360 monosex fry of Oreochromis sp with an average weight of 1.95 ± 0.34g were divided into 12 happas, including 30 subjects per happa in triplicate in a completely randomized system for four food rations. TS (Imported Skreting feed), T0 (feed without supplement), T(0.1%F) (feed containing 0.1% A. lepidophyllus fruit bean powder), T(0.2%F) (food containing 0.2% fruit bean powder of A. lepidophyllus). These feeds were distributed 4 times a day to the fry at a regular time interval of 3 hours including 7 a.m., 10 a.m., 1 p.m. and 4 p.m. the fry were fed at 11% of their biomass for one month and then at 10% for six weeks. The analysis of variance showed no significant difference (p > 0.05) in the survival rates (97.66 ± 1.02%-98.66 ± 0.90%) but a trend on the rise in favor of feeds supplemented with the spice. Live weight (19.37 ± 0.47), average weight gain (16.96 ± 0.47), total length (7.80 ± 0.04), daily weight gain (0.22 ± 0.01g/d), the specific growth rate (9.12 ± 0.25g%/d) were significantly higher (p < 0.05) with fry fed with feed supplemented at 0.2 % fruit beans of A. lepidophyllus (T0.2%F) compared to the fry fed with the feed without supplement (T0) but significantly (p < 0.05) lower compared to the values ​​recorded with the fry fed with the feed imported feed Skreting (TS). The feed conversion ration was not significantly (p > 0.05) affected regardless of the treatment considered. Total length was significantly (p < 0.05) higher with fish fed imported feed (TS) and feed supplemented with 0.2% A. lepidophyllus fruit bean powder compared to treatments. Fed with feed without supplement (T0) and with feed supplemented with 0.1% of this spice (T0.1%F). The significantly higher feed cost of production (p < 0.05) was recorded with the treatment fed imported feed Skreting (TS) compared to the other treatments which were also comparable to each other for this parameter. The condition factor K was not significantly (p > 0.05) affected by the treatments. The supplementation of 0.2% of A. lepidophyllus bean powder in the feed can advantageously be used to improve the zootechnical performance of Oreochromis sp fry in the pre-fattening phase.","PeriodicalId":470155,"journal":{"name":"International journal of aquaculture and fishery sciences","volume":"40 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135461779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Market profile and performance analysis of cultured fish actors","authors":"A Ololade Rachel, I Olagunju Funke, R Adeojo John, J Adejumo Taiwo","doi":"10.17352/2455-8400.000087","DOIUrl":"https://doi.org/10.17352/2455-8400.000087","url":null,"abstract":"Cultured fish marketing is highly entrepreneurial. It is a highly perishable commodity that deteriorates very rapidly, rendering it unfit for human consumption if kept for a long time without processing. This study aims to examine the performance of cultured fish actors (producers, processors, wholesalers, and retailers involved in the selling of fish), identify the factors influencing their performance, and identify constraints of the cultured fish market in the study area. Primary data on socioeconomic and resource characteristics were collected with the use of a structured questionnaire administered to 300 respondents using a multistage random sampling technique among cultured fish actors in South-Western Nigeria. The data were analyzed using descriptive statistics for the market profile of the actors, Market Margin (MM) estimations for the performance of actors, and multiple regression for factors affecting the performance of actors. The analyses showed that 81.70%, 37.93%, 51.47%, and 27.03% of the producers, processors, wholesalers, and retailers respectively were males. The analysis of the performance of actors showed that the Gross Profit Margin (GPM) for the producers, processors, wholesalers, and retailers are 75.26%, 16.21%, 7.63%, and 0.9%, respectively. The multiple regression results showed that the significant factors affecting the performance of actors were transport cost (p = 0.000), labour cost (p = 0.001), cost of fish purchased (p = 0.073), cost of fish sold (p = 0.000), the quantity of fish sold (p = 0.000) and access to credit (p = 0.085). Inadequate funds/capital, poor electricity, lack of good roads, and a market for the produce are the major constraints of cultured fish marketing in the study area. Conclusively, the GPM showed that the actors were all making a profit but at different rates because the cost incurred by each actor differs.","PeriodicalId":470155,"journal":{"name":"International journal of aquaculture and fishery sciences","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135298589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}