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  • 1
    Electronic Resource
    Electronic Resource
    Use of extruded maize in rainbow trout feed improves growth rate and quality
    Amsterdam : Elsevier
    Aquacultural Engineering 8 (1989), S. 139-145 
    Details
    ISSN: 0144-8609
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0144-8609(89)90010-1
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Ammonia removal capacity of European natural zeolite tuffs: application to aquaculture waste water (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Aquaculture research 25 (1994), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract. The possibility of improving aquaculture water quality using different kinds of zeolites is discussed. Zeolites are aluminosilicates, whose framework structure allows them to exchange cations. Cations have differing affinities for different structures, and in particular ammonia has a great affinity for phillipsite and clinoptilolite structures. These zeolites are already used for ammonia removal from municipal piggery, and aquacultural wastes. In the present paper, ammonia removal from aquacultural water from recirculating systems has been tested, comparing different zeolites under laboratory conditions. Phillipsite and clinoptilolite tuffs were effective in ammonia removal, while chabazitc tuff having a lower content of zeolitic material (50%) and lower affinity for ammonia showed that a lower temperature did not influence ion exchange capacity in any of the zeolites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.1994.tb00745.x
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    Paper (German National Licenses)
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  • 3
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    A description of ammonium content of output waters from trout farms in relation to stocking density and flow rates (2001)
    Elsevier
    Details
    Publication Date: 2001-08-01
    Print ISSN: 0925-8574
    Electronic ISSN: 1872-6992
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Elsevier
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    PAPER CURRENT
  • 4
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    A floating cage system for rearing freshwater mussels Anodonta anatina and Unio mancus in Piedmont region (NW Italy) (2018)
    Details
    Publication Date: 2021-05-19
    Description: This research represents the first attempt in Italy to develop a cage system for adult freshwater mussel stocking, for extensive farming, that was realized from 2003 to 2005 in NW Italy. Two autochthonous species of Italian freshwater mussel were used: Anodonta anatina and Unio mancus. 5133 mussels were collected and successively stocked in floating cages in 5 different sites in a lake. This study was planned in order to determine the effect of main rearing factors for potential farming: stocking density and cage position in the water column (depth). For each species, the effects of three rearing densities and two water depths were tested. Mussel growth was measured on a monthly basis in each experimental unit throughout the study. The survival rate at the end of the experiment for both species considered was 98.4%. U. mancus resulted to be more resistant to rearing conditions and during the summer the highest mortality was registered for A. anatina. Summer mortality was between 4.8% and 20.5%. Highest mortality in U. mancus was recorded in September 2004 at 1.5 m (3.6±2.4%), while the highest mortality for A. anatina was recorded in September 2003 as 13.3%±3.8% at a depth of 1.5 m. This research showed that cage stocking is a suitable method and the optimal position of cages is at the lake thermocline. The proposed species proved to be easily utilizable for future farming or bioremediation projects, and can readily be reared up to 135 kg m-3.
    Description: Published
    Keywords: Aquaculture ; Freshwater mussels ; Mussel farming ; Anodonta anatine ; Unio mancus ; Conservation aquaculture
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp.754-766
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  • 5
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    A floating cage system for rearing freshwater mussels Anodonta anatina and Unio mancus in Piedmont region (NW Italy) (2021)
    In:  http://aquaticcommons.org/id/eprint/22814 | 18721 | 2018-05-24 21:31:44 | 22814 | Iranian Fisheries Science Research Institute
    Details
    Publication Date: 2021-07-10
    Description: This research represents the first attempt in Italy to develop a cage system for adult freshwater mussel stocking, for extensive farming, that was realized from 2003 to 2005 in NW Italy. Two autochthonous species of Italian freshwater mussel were used: Anodonta anatina and Unio mancus. 5133 mussels were collected and successively stocked in floating cages in 5 different sites in a lake. This study was planned in order to determine the effect of main rearing factors for potential farming: stocking density and cage position in the water column (depth). For each species, the effects of three rearing densities and two water depths were tested. Mussel growth was measured on a monthly basis in each experimental unit throughout the study. The survival rate at the end of the experiment for both species considered was 98.4%. U. mancus resulted to be more resistant to rearing conditions and during the summer the highest mortality was registered for A. anatina. Summer mortality was between 4.8% and 20.5%. Highest mortality in U. mancus was recorded in September 2004 at 1.5 m (3.6±2.4%), while the highest mortality for A. anatina was recorded in September 2003 as 13.3%±3.8% at a depth of 1.5 m. This research showed that cage stocking is a suitable method and the optimal position of cages is at the lake thermocline. The proposed species proved to be easily utilizable for future farming or bioremediation projects, and can readily be reared up to 135 kg m^-3.
    Keywords: Aquaculture ; Engineering ; Fisheries ; Freshwater mussels ; Mussel farming ; Anodonta anatine ; Unio mancus ; Conservation aquaculture ; Piedmont region ; Italy
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 754-766
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