Pub Date : 2018-10-22DOI: 10.4172/2150-3508.1000253
pTarek Foudap
{"title":"Waste management for smoking salmon by-products to extract omega-3 fish oil","authors":"pTarek Foudap","doi":"10.4172/2150-3508.1000253","DOIUrl":"https://doi.org/10.4172/2150-3508.1000253","url":null,"abstract":"","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124681835","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}
Pub Date : 2018-04-30DOI: 10.4172/2150-3508.1000245
P. KarthigaPriya, B. Sundaramoorthy, N. Neethiselvan, D. Sukumar, K. Masilan
The present study is the first concerning gillnet selectivity in Thoothukudi waters, Tamil Nadu, India. Selectivity estimates were made for Sphyraena forsteri. Sampling took places at three landing centers in Thoothukudi Coast from the period between April 2012 to March 2013. Samples were collected with gillnets of mesh sizes of 28 mm, 50 mm and 52 mm. Selection factors for S. forsteri is 7.04 whereas the commercial significant length group is 40.42 cm. Optimum size for this species is 5.82 cm.
{"title":"Gillnet Selectivity for Big Eye Barracuda, Sphyraena forsteri (Cuvier, 1829) in Thoothukudi Waters, Southeast Coast of India","authors":"P. KarthigaPriya, B. Sundaramoorthy, N. Neethiselvan, D. Sukumar, K. Masilan","doi":"10.4172/2150-3508.1000245","DOIUrl":"https://doi.org/10.4172/2150-3508.1000245","url":null,"abstract":"The present study is the first concerning gillnet selectivity in Thoothukudi waters, Tamil Nadu, India. Selectivity estimates were made for Sphyraena forsteri. Sampling took places at three landing centers in Thoothukudi Coast from the period between April 2012 to March 2013. Samples were collected with gillnets of mesh sizes of 28 mm, 50 mm and 52 mm. Selection factors for S. forsteri is 7.04 whereas the commercial significant length group is 40.42 cm. Optimum size for this species is 5.82 cm.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133471343","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}
Pub Date : 2018-04-26DOI: 10.4172/2150-3508.1000243
He Wang, Sebsibe Amesa, M. Endebu, Girma Tirfessa, Zou Zhong-yi, Wu Zhi-gang
Sandy nature of soil in Ethiopian rift valley challenged use of earthen ponds for fish culture. This trial was conducted at Algae Agricultural Technical and Vocational Educational Training (ATVET) College in Ethiopian central rift valley to investigate feasibility of fishpond constructed from mixture of local materials named “Three-in-one” and to assess its suitability and capacity for aquaculture. Fishponds were excavated, walls built with three layers; plastic membrane, "Three-in-one" soil and cement pavement. "Three-in-one" is a mixture of clay soil, termite soil and teff straw. Fish growth in the ponds was evaluated under supplement of different sorts of agricultural residues or agricultural by-products. The "Three-in-one" fishpond technology was found to be low cost, simple to construct, able to retain water effectively and has long service life. The fishpond also supported fish growth with good farming performances as 9,250 kg/ha. Use of agricultural residues or agricultural by-products as feed for fish culture in the fishponds effectively reduced the cost of fish farming with feed coefficient 2.4~2.6. The "Three-in-one" fishpond technology and matching feed has to be evaluated and popularized for extension in appropriate sites of Ethiopia.
{"title":"Preliminary Study on Construction of Three-in-one Fishpond and Its Effect on Aquaculture in Ethiopia","authors":"He Wang, Sebsibe Amesa, M. Endebu, Girma Tirfessa, Zou Zhong-yi, Wu Zhi-gang","doi":"10.4172/2150-3508.1000243","DOIUrl":"https://doi.org/10.4172/2150-3508.1000243","url":null,"abstract":"Sandy nature of soil in Ethiopian rift valley challenged use of earthen ponds for fish culture. This trial was conducted at Algae Agricultural Technical and Vocational Educational Training (ATVET) College in Ethiopian central rift valley to investigate feasibility of fishpond constructed from mixture of local materials named “Three-in-one” and to assess its suitability and capacity for aquaculture. Fishponds were excavated, walls built with three layers; plastic membrane, \"Three-in-one\" soil and cement pavement. \"Three-in-one\" is a mixture of clay soil, termite soil and teff straw. Fish growth in the ponds was evaluated under supplement of different sorts of agricultural residues or agricultural by-products. The \"Three-in-one\" fishpond technology was found to be low cost, simple to construct, able to retain water effectively and has long service life. The fishpond also supported fish growth with good farming performances as 9,250 kg/ha. Use of agricultural residues or agricultural by-products as feed for fish culture in the fishponds effectively reduced the cost of fish farming with feed coefficient 2.4~2.6. The \"Three-in-one\" fishpond technology and matching feed has to be evaluated and popularized for extension in appropriate sites of Ethiopia.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124775865","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}
Pub Date : 2018-04-25DOI: 10.4172/2150-3508.1000242
A. Hiko, Kanani Tasisa, G. Agga
Microbiological and helminthiasis examination of fish from Tinike and Adelle Lakes were conducted at Haramaya District, Ethiopia. The types of fish available in the lakes were also assessed. Adelle Lake has only Clarias gariepinus while the Tinike Lake has only Oreochromis niloticus fish species. Ten fish of each species, 20 in total, were collected from the lakes and post-mortem examined for the presence of adult helminthiasis in the body parts. Twelve samples from different body parts of each fish, 240 samples in total, and 11 samples of lakes water were aseptically collected and examined for gram-negative enteric bacteria. No adult parasites were observed in fish from Adelle Lake. However, 15% and 20% of the fish from Tinike Lake had cestodes in their intestine, and nematodes in their heart respectively. Of 251 total samples from fish and the lake water, 178 (70.9%) were positive for pathogenic microbial. Except for muscle tissue to which only 5% are positive, 50% and above samples were found positive for some Gram’s-negative bacteria. From total of fish and water sample, 43%, 36.3%, 15.1%, 12.8%, and 1.2% are positive for Proteus, E. coli, Salmonella, Yersinia and Klebsiella respectively in the descending order. Two bacterial genera, Proteus and E. coli (13.6%), Proteus and Yersinia (2%), Proteus and Salmonella (4%), E. coli and Yersinia (2%), E. coli and Salmonella (1.2%), and E .coli and Klebsiella (0.4%) while triplet of genera Proteus, E. coli and Yersinia (6%), Proteus, E. coli and Salmonella (0.8%), and Proteus, E. coli and salmonella (0.4%) were observed. Salmonella spp. was not detected from fish from Lake Adelle compared to the 30% in fish from Lake Tinike (P<0.0001). Proper cooking of fish could destroy those spoilage and public health risk. Observing similar levels of gram-negative enteric bacteria in the fish and water suggesting contaminated water as a source for the fish contamination.
{"title":"Helminthiasis and Gram Negative Enteric Bacteria in Freshwater Fish from Selected Lakes of Haramaya District, Ethiopia","authors":"A. Hiko, Kanani Tasisa, G. Agga","doi":"10.4172/2150-3508.1000242","DOIUrl":"https://doi.org/10.4172/2150-3508.1000242","url":null,"abstract":"Microbiological and helminthiasis examination of fish from Tinike and Adelle Lakes were conducted at Haramaya District, Ethiopia. The types of fish available in the lakes were also assessed. Adelle Lake has only Clarias gariepinus while the Tinike Lake has only Oreochromis niloticus fish species. Ten fish of each species, 20 in total, were collected from the lakes and post-mortem examined for the presence of adult helminthiasis in the body parts. Twelve samples from different body parts of each fish, 240 samples in total, and 11 samples of lakes water were aseptically collected and examined for gram-negative enteric bacteria. No adult parasites were observed in fish from Adelle Lake. However, 15% and 20% of the fish from Tinike Lake had cestodes in their intestine, and nematodes in their heart respectively. Of 251 total samples from fish and the lake water, 178 (70.9%) were positive for pathogenic microbial. Except for muscle tissue to which only 5% are positive, 50% and above samples were found positive for some Gram’s-negative bacteria. From total of fish and water sample, 43%, 36.3%, 15.1%, 12.8%, and 1.2% are positive for Proteus, E. coli, Salmonella, Yersinia and Klebsiella respectively in the descending order. Two bacterial genera, Proteus and E. coli (13.6%), Proteus and Yersinia (2%), Proteus and Salmonella (4%), E. coli and Yersinia (2%), E. coli and Salmonella (1.2%), and E .coli and Klebsiella (0.4%) while triplet of genera Proteus, E. coli and Yersinia (6%), Proteus, E. coli and Salmonella (0.8%), and Proteus, E. coli and salmonella (0.4%) were observed. Salmonella spp. was not detected from fish from Lake Adelle compared to the 30% in fish from Lake Tinike (P<0.0001). Proper cooking of fish could destroy those spoilage and public health risk. Observing similar levels of gram-negative enteric bacteria in the fish and water suggesting contaminated water as a source for the fish contamination.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126156451","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}
Pub Date : 2018-02-16DOI: 10.4172/2150-3508.1000238
S. Tesfaye, Misaw Kasye, M. Chane, Baseazinew Bogale, Zewudie Abebe agere
A cross-sectional study was conducted from October 2016 to May 2017 on Oreochromis niloticus, Cyprinus carpio and Clarias gariepinus fish species at Lake Hayiq, North East Ethiopia with the objective of isolation and identification of major gram-negative bacterial pathogens of commonly catched fish species from Lake Hayik. A total of 98 live fishes (49 Oreochromis niloticus, 30 Cyprinus carpio and 19 Clarias gariepinus) were collected and transported to the laboratory. From the three fish species a total of 384 organ samples (96 skins, 98 gills, 94 intestines, 33 swim bladders, 19 kidneys, and 44 livers) were taken. A systematic random sampling technique was used to select the fish samples after drawn from the water. Among 384 fish organ samples 116 (30.2%) gram negative bacterial isolates were found: 9 (2.3%) Aeromonas species, 24 (6.3%) Pseudomonas species, 6 (1.6%) Enterobacter species, 29 (7.6%) Escherichia species, 4 (1.6%) Edwardsiella species, 11 (2.9%) Klebsiella species, 5 (1.3%) Proteus species, 8 (2.1%) Vibrio species, 14 (3.6%) Flavobacter species and 6 (1.6%) Salmonella species were found. Isolation among organs: Pseudomonas species, skin (33.3%), intestine (33.3%), and swim bladder (12.5%); Escherichia species: intestine (41.4%), skin (24.2%) and gill (24.2%) and Klebsiella species: liver (27.3%), gills (36.4%) were found. All the isolated bacterial species were gram-negative bacteria. From the three fish species, Oreochromis niloticus was the most affected fish species (48.2%) while Clarias gariepinus species were the least affected species (17.2%). In conclusion, majorities of those pathogens isolated and identified were very important for different fish disease outbreaks and also public health importance. But, very few and disintegrated studies with scanty data have been done whereas, it has been nowadays fishery is one of the main growth transformation plan for food security in Ethiopia. Therefore, it needs further integrated investigation on fish bacterial diseases.
{"title":"Preliminary Survey of Gram-Negative Bacterial Pathogens from Commonly Caught Fish Species (Oreochromis niloticus, Cyprinus carpio and Clarias gariepinus) in Lake Hayiq, Ethiopia","authors":"S. Tesfaye, Misaw Kasye, M. Chane, Baseazinew Bogale, Zewudie Abebe agere","doi":"10.4172/2150-3508.1000238","DOIUrl":"https://doi.org/10.4172/2150-3508.1000238","url":null,"abstract":"A cross-sectional study was conducted from October 2016 to May 2017 on Oreochromis niloticus, Cyprinus carpio and Clarias gariepinus fish species at Lake Hayiq, North East Ethiopia with the objective of isolation and identification of major gram-negative bacterial pathogens of commonly catched fish species from Lake Hayik. A total of 98 live fishes (49 Oreochromis niloticus, 30 Cyprinus carpio and 19 Clarias gariepinus) were collected and transported to the laboratory. From the three fish species a total of 384 organ samples (96 skins, 98 gills, 94 intestines, 33 swim bladders, 19 kidneys, and 44 livers) were taken. A systematic random sampling technique was used to select the fish samples after drawn from the water. Among 384 fish organ samples 116 (30.2%) gram negative bacterial isolates were found: 9 (2.3%) Aeromonas species, 24 (6.3%) Pseudomonas species, 6 (1.6%) Enterobacter species, 29 (7.6%) Escherichia species, 4 (1.6%) Edwardsiella species, 11 (2.9%) Klebsiella species, 5 (1.3%) Proteus species, 8 (2.1%) Vibrio species, 14 (3.6%) Flavobacter species and 6 (1.6%) Salmonella species were found. Isolation among organs: Pseudomonas species, skin (33.3%), intestine (33.3%), and swim bladder (12.5%); Escherichia species: intestine (41.4%), skin (24.2%) and gill (24.2%) and Klebsiella species: liver (27.3%), gills (36.4%) were found. All the isolated bacterial species were gram-negative bacteria. From the three fish species, Oreochromis niloticus was the most affected fish species (48.2%) while Clarias gariepinus species were the least affected species (17.2%). In conclusion, majorities of those pathogens isolated and identified were very important for different fish disease outbreaks and also public health importance. But, very few and disintegrated studies with scanty data have been done whereas, it has been nowadays fishery is one of the main growth transformation plan for food security in Ethiopia. Therefore, it needs further integrated investigation on fish bacterial diseases.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125675762","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}
Pub Date : 2017-12-08DOI: 10.4172/2150-3508.1000235
D. Arnaud, L. Benoît, Fomena Abraham
Examination of some Teleost fishes captured in the Maga detention lake located in the Far North Region of Cameroon, revealed the presence of three new species of Myxosporidia of the genera Myxidium Butschli, 1882 and Myxobolus Butschli, 1882 of which complete description is given in the present study. These species are: Myxidium tetraodoni sp. nov., parasite of the urinary bladder of Tetraodon lineatus Linnaeus, 1758 (Tetraodontidae) that form ellipsoidal spores with a turgid middle part and rounded ends. They measured 11.6 (10.5-12.5) μm long × 8.2 (7.2-9.6) μm broad; the spherical polar capsules are of equal size and measure 3.7 (3.0-4.3) μm. Myxidium anisocapsularis sp. nov., a parasite of the gall bladder of Distichodus engycephalus Gunther, 1964 (Distichodontidae) form spindle-shaped and elongated spores, that measure 15.2 (14.0-16.2) μm longx6.0 (5.0-6.7) μm broad; its polar capsules are quite unequal and respectively measure 6.0 (5.0-6.5) × 3.3 (3.0-3.8) μm for the larger and 4.7 (4.0-5.5) × 3.0 (2.3-3.3) μm for the smaller. Myxobolus magai sp. nov., a gill parasite of Labeo batesii Boulenger, 1911 (Cyprinidae) form ovoid spores with the anterior end larger with small protuberance, that measure 10.6 (9.0-12.0) × 6.3 (5.5-7.0) μm. Its polar capsules measure 2.8 (2.4-3.4) × 2.3 (2.0-3.0) μm.
{"title":"Description of Myxidium tetraodoni Sp. Nov., Myxidium anisocapsularis Sp. Nov. and Myxobolus magai Sp. Nov. (Myxosporea: Bivalvulida) Infecting Some Freshwater Fishes in Cameroon (Central Africa)","authors":"D. Arnaud, L. Benoît, Fomena Abraham","doi":"10.4172/2150-3508.1000235","DOIUrl":"https://doi.org/10.4172/2150-3508.1000235","url":null,"abstract":"Examination of some Teleost fishes captured in the Maga detention lake located in the Far North Region of Cameroon, revealed the presence of three new species of Myxosporidia of the genera Myxidium Butschli, 1882 and Myxobolus Butschli, 1882 of which complete description is given in the present study. These species are: Myxidium tetraodoni sp. nov., parasite of the urinary bladder of Tetraodon lineatus Linnaeus, 1758 (Tetraodontidae) that form ellipsoidal spores with a turgid middle part and rounded ends. They measured 11.6 (10.5-12.5) μm long × 8.2 (7.2-9.6) μm broad; the spherical polar capsules are of equal size and measure 3.7 (3.0-4.3) μm. Myxidium anisocapsularis sp. nov., a parasite of the gall bladder of Distichodus engycephalus Gunther, 1964 (Distichodontidae) form spindle-shaped and elongated spores, that measure 15.2 (14.0-16.2) μm longx6.0 (5.0-6.7) μm broad; its polar capsules are quite unequal and respectively measure 6.0 (5.0-6.5) × 3.3 (3.0-3.8) μm for the larger and 4.7 (4.0-5.5) × 3.0 (2.3-3.3) μm for the smaller. Myxobolus magai sp. nov., a gill parasite of Labeo batesii Boulenger, 1911 (Cyprinidae) form ovoid spores with the anterior end larger with small protuberance, that measure 10.6 (9.0-12.0) × 6.3 (5.5-7.0) μm. Its polar capsules measure 2.8 (2.4-3.4) × 2.3 (2.0-3.0) μm.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"25 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114113797","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}
Pub Date : 2017-11-30DOI: 10.4172/2150-3508.1000E127
T. Fenchel, B. Jørgensen, H. U. Riisgård
• You may download this work for personal use only. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying this open access version If you believe that this document breaches copyright please contact us providing details and we will investigate your claim. Please direct all enquiries to puresupport@bib.sdu.dk
{"title":"Fake News Mussel Farming A \"New Climate Bomb\"","authors":"T. Fenchel, B. Jørgensen, H. U. Riisgård","doi":"10.4172/2150-3508.1000E127","DOIUrl":"https://doi.org/10.4172/2150-3508.1000E127","url":null,"abstract":"• You may download this work for personal use only. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying this open access version If you believe that this document breaches copyright please contact us providing details and we will investigate your claim. Please direct all enquiries to puresupport@bib.sdu.dk","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124940791","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}
Pub Date : 2017-11-21DOI: 10.4172/2150-3508.1000232
S. Das, Md Kamal Hossain, Golam Mustafa, A. Parvin, B. Saha, P. Das, M. Moniruzzaman
Heavy metals to man through aquatic life occur with the consumption of affected fish which is detrimental to the human body, having toxic and carcinogenic effects. In Bangladesh, the practice of Tilapia (Oreochromis niloticus) culture has become popular due to its great demand to people. This study aimed at determining levels of Cd, Cr, Cu, Pb, Ni in feed used for tilapia culture (N=18), in sediment (N=9) and water (N=9) of three culture pond of three different farms of Noakhali region in Bangladesh. Heavy metal concentration was detected by Atomic absorption spectroscopy. The average metal concentration in fishes of farm 1, farm 2 and farm 3 following trend Pb>Cr>Cu>Ni>Cd, Pb>Ni>Cr>Cu>Cd, and Pb>Ni>Cu>Cr>Cd, respectively. The level of selected heavy metals was below detection limit in a water sample. The order of heavy metal concentration in feed samples of each farm was decreased in the similar sequence of Cu>Cr>Ni>Pb>Cd. Heavy metal concentrations in the sediment of farm 1 was decreased in the order of Cu>Ni>Pb>Cr>Cd but metal concentrations in the sediment of farm 2 and farm 3 were decreased in the similar manner of Ni>Cu>Cr>Pb>Cd. The results show evidence of bioaccumulation of heavy metals in the fish with alarming levels that are higher than IAEA-407 limits, therefore, posing a potential risk for the consumer.
{"title":"Physicochemical Properties of Water and Heavy Metals Concentration of Sediments, Feeds and Various Farmed Tilapia (Oreochoromis niloticus) In Bangladesh","authors":"S. Das, Md Kamal Hossain, Golam Mustafa, A. Parvin, B. Saha, P. Das, M. Moniruzzaman","doi":"10.4172/2150-3508.1000232","DOIUrl":"https://doi.org/10.4172/2150-3508.1000232","url":null,"abstract":"Heavy metals to man through aquatic life occur with the consumption of affected fish which is detrimental to the human body, having toxic and carcinogenic effects. In Bangladesh, the practice of Tilapia (Oreochromis niloticus) culture has become popular due to its great demand to people. This study aimed at determining levels of Cd, Cr, Cu, Pb, Ni in feed used for tilapia culture (N=18), in sediment (N=9) and water (N=9) of three culture pond of three different farms of Noakhali region in Bangladesh. Heavy metal concentration was detected by Atomic absorption spectroscopy. The average metal concentration in fishes of farm 1, farm 2 and farm 3 following trend Pb>Cr>Cu>Ni>Cd, Pb>Ni>Cr>Cu>Cd, and Pb>Ni>Cu>Cr>Cd, respectively. The level of selected heavy metals was below detection limit in a water sample. The order of heavy metal concentration in feed samples of each farm was decreased in the similar sequence of Cu>Cr>Ni>Pb>Cd. Heavy metal concentrations in the sediment of farm 1 was decreased in the order of Cu>Ni>Pb>Cr>Cd but metal concentrations in the sediment of farm 2 and farm 3 were decreased in the similar manner of Ni>Cu>Cr>Pb>Cd. The results show evidence of bioaccumulation of heavy metals in the fish with alarming levels that are higher than IAEA-407 limits, therefore, posing a potential risk for the consumer.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126216762","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}
Pub Date : 2017-09-29DOI: 10.4172/2150-3508.1000226
Gerald Kwikiriza, A. Barekye, Aheisibwe Ar, E. Byakora, P.D.M Tibihika
The availability of O. niloticus fingerlings remains a problem in South Western Highland Agro-Ecological Zones. Most fish farmers produce only small sized fish probably because of inbreeding in Uganda. Brood stocks of Nile tilapia, Oreochromis niloticus L. were collected from Lakes Victoria, Kyoga and Kayumbu, a minor lake in SWHAEZ. The brood-stock were conditioned and bred. Fingerlings of F1 generation of each strain were fed diet containing 35% Crude Protein for 90 days. The results showed that Victoria strain growth performance was better compared to other tilapia strains in growth performance. Survival rate was not significantly different among Nile tilapia strains. Crude protein contents in fish body was higher in Victoria (69.30%) followed by Kayumbu strains (68.125%) with Kyoga having the least crude protein content (64.5%). Fish body of Kayumbu strains contained higher values of crude fat (11.70%) followed by Victoria strain (9.90%) while Kyoga strain had the least crude lipid (8.50%). The Victoria strain (47.8 g feed/fish) had significantly higher feed intake and PER than all the other strains. Kyoga and Kayumbu strains were comparable in terms of feed intake. However, the Kayumbu strain had significantly the least PER (2.46). The lowest FCR value was obtained in Kayumbu strain (1.67), while the higher ones were obtained in Kyoga and Victoria strains 1.82 and 1.78, respectively). The poor performance of kayumbu strain was probably due to in breeding and other environmental factors like temperatures. Therefore, exploitation of the genetic variation within the different native wild strains through selective breeding can help to improve growth performance of the Kayumbu strain in South Western Highland Agro-Ecological Zones (SWHAEZ).
{"title":"Comparative Growth Performance and Proximate Nutrient Composition of Three Local Strains of Nile Tilapia ( Oreochromis Niloticus L. ) Collected From Different Locations in Uganda","authors":"Gerald Kwikiriza, A. Barekye, Aheisibwe Ar, E. Byakora, P.D.M Tibihika","doi":"10.4172/2150-3508.1000226","DOIUrl":"https://doi.org/10.4172/2150-3508.1000226","url":null,"abstract":"The availability of O. niloticus fingerlings remains a problem in South Western Highland Agro-Ecological Zones. Most fish farmers produce only small sized fish probably because of inbreeding in Uganda. Brood stocks of Nile tilapia, Oreochromis niloticus L. were collected from Lakes Victoria, Kyoga and Kayumbu, a minor lake in SWHAEZ. The brood-stock were conditioned and bred. Fingerlings of F1 generation of each strain were fed diet containing 35% Crude Protein for 90 days. The results showed that Victoria strain growth performance was better compared to other tilapia strains in growth performance. Survival rate was not significantly different among Nile tilapia strains. Crude protein contents in fish body was higher in Victoria (69.30%) followed by Kayumbu strains (68.125%) with Kyoga having the least crude protein content (64.5%). Fish body of Kayumbu strains contained higher values of crude fat (11.70%) followed by Victoria strain (9.90%) while Kyoga strain had the least crude lipid (8.50%). The Victoria strain (47.8 g feed/fish) had significantly higher feed intake and PER than all the other strains. Kyoga and Kayumbu strains were comparable in terms of feed intake. However, the Kayumbu strain had significantly the least PER (2.46). The lowest FCR value was obtained in Kayumbu strain (1.67), while the higher ones were obtained in Kyoga and Victoria strains 1.82 and 1.78, respectively). The poor performance of kayumbu strain was probably due to in breeding and other environmental factors like temperatures. Therefore, exploitation of the genetic variation within the different native wild strains through selective breeding can help to improve growth performance of the Kayumbu strain in South Western Highland Agro-Ecological Zones (SWHAEZ).","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121384539","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}
Pub Date : 2017-09-29DOI: 10.4172/2150-3508.1000225
re Lcg, Hellen Buzollo, L. M. Neira, Nascimento Tmt, R. K. Jomori, Carneiro Dj
The study assessed the protein sparing effect resulting from carbohydrate (CHO) and lipid (LIP) use and metabolic responses of juvenile tambaqui fed diets with different proportions of CHO and LIP. In a completely randomized 3 × 2 factorial design, the 6 diets tested combined 3 CHO (410 gkg-1, 460 gkg-1 and 510 gkg-1) and 2 LIP (40 gkg-1 and 80 gkg-1) levels. The 1080 fish tested (10.88 g ± 0.13 g mean body weight) were randomly distributed into twenty-four 500-L tanks (45 fish per tank). An increase in diet CHO and LIP levels improved feed conversion and protein efficiency ratio. The highest addition of CHO (510 gkg-1) and LIP (80 gkg-1) reduced diet intake and weight gain and increased serum triglyceride levels and fat deposition in muscle and liver. Glucose levels, serum protein and liver glycogen showed no difference between treatments with different CHO and LIP levels. Liver and muscle fat deposition were higher in the treatments with the highest diet LIP level, irrespective of diet CHO. The hepatosomatic index (HSI) and viscerosomatic fat index (VSI) exhibited no differences between treatments. Therefore, tambaqui can use both CHO and LIP to optimize protein use. The physiological responses indicate that the best CHO-LIP combination in tambaqui diets is 460 gkg-1 and 40 gkg-1, respectively. This combination promotes satisfactory growth without causing excess fat accumulation.
{"title":"Growth and Energy Metabolism of Tambaqui ( Colossoma Macropomum ) Fed Diets with Different Levels of Carbohydrates and Lipids","authors":"re Lcg, Hellen Buzollo, L. M. Neira, Nascimento Tmt, R. K. Jomori, Carneiro Dj","doi":"10.4172/2150-3508.1000225","DOIUrl":"https://doi.org/10.4172/2150-3508.1000225","url":null,"abstract":"The study assessed the protein sparing effect resulting from carbohydrate (CHO) and lipid (LIP) use and metabolic responses of juvenile tambaqui fed diets with different proportions of CHO and LIP. In a completely randomized 3 × 2 factorial design, the 6 diets tested combined 3 CHO (410 gkg-1, 460 gkg-1 and 510 gkg-1) and 2 LIP (40 gkg-1 and 80 gkg-1) levels. The 1080 fish tested (10.88 g ± 0.13 g mean body weight) were randomly distributed into twenty-four 500-L tanks (45 fish per tank). An increase in diet CHO and LIP levels improved feed conversion and protein efficiency ratio. The highest addition of CHO (510 gkg-1) and LIP (80 gkg-1) reduced diet intake and weight gain and increased serum triglyceride levels and fat deposition in muscle and liver. Glucose levels, serum protein and liver glycogen showed no difference between treatments with different CHO and LIP levels. Liver and muscle fat deposition were higher in the treatments with the highest diet LIP level, irrespective of diet CHO. The hepatosomatic index (HSI) and viscerosomatic fat index (VSI) exhibited no differences between treatments. Therefore, tambaqui can use both CHO and LIP to optimize protein use. The physiological responses indicate that the best CHO-LIP combination in tambaqui diets is 460 gkg-1 and 40 gkg-1, respectively. This combination promotes satisfactory growth without causing excess fat accumulation.","PeriodicalId":166175,"journal":{"name":"Fisheries and Aquaculture Journal","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130435874","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}
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