Articles by Keyword: Aquaculture

Search results for Aquaculture

We found 28 results for you
  1. Multiple Resource Utilisation Developments in Mondi Forests

    Item type: Journal Article • Journal: South African Forestry Journal
    Defined as the use of available resources other than the planted trees on Mondi's landholdings, the development of various MRU projects is described from 1975 onwards. Projects are differentiated into those that are directly dependant on the presence of planted...
  2. ALIEN FRESHWATER CRUSTACEAN AND INDIGENOUS MOLLUSC SPECIES WITH AQUACULTURE POTENTIAL IN EASTERN AND SOUTHERN AFRICA

    ALIEN FRESHWATER CRUSTACEAN AND INDIGENOUS MOLLUSC SPECIES WITH AQUACULTURE POTENTIAL IN EASTERN AND SOUTHERN AFRICA

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    Farming of crustaceans and molluscs in Southern Africa is not well developed, but it is likely to intensify in coming years. The pressure to introduce new candidate species to satisfy specific culinary demands or improve bulk yields and efficiencies is...
  3. FAECAL BACTERIAL CONTAMINATION OF TROUT HATCHERY WATER EFFLUENT

    FAECAL BACTERIAL CONTAMINATION OF TROUT HATCHERY WATER EFFLUENT

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    This study was undertaken to determine the occurrence of faecal bacteria in two trout hatcheries in the Transvaal Province, South Africa. The results indicate that variations in numbers of enteric bacteria are partly caused by man-made changes to the influent...
  4. UTILIZATION OF PLANT MATERIALS BY JUVENILE AFRICAN CATFISH <em>(CLARIAS GARIEPINUS)</em> AND ITS IMPORTANCE IN FISH CULTURE

    UTILIZATION OF PLANT MATERIALS BY JUVENILE AFRICAN CATFISH <em>(CLARIAS GARIEPINUS)</em> AND ITS IMPORTANCE IN FISH CULTURE

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa
    Juvenile African catfish Clarias gariepinus between 100 and 200 mm total length from Lake McIlwaine, Zimbabwe are able to digest plant proteins. The digestibility of three major plant proteins (maize, sunflower seed and soya meal) was 30,0, 65,4 and 84,3%...
  5. Evaluation of a Computer Model for the Selection of Candidate Species for Aquaculture

    Evaluation of a Computer Model for the Selection of Candidate Species for Aquaculture

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    The use of a computer-based “Expert Choice” system, incorporating the Analytical Hierarchy Process, in the selection of candidate species for aquaculture is described. The system is considered to be particularly useful in developing countries or areas where the aquaculture industry...
  6. Effects of three agricultural by-products on cage culture growth performances of a landlocked population of <em>Sarotherodon melanotheron</em> (Teleostei: Cichlidae) in man-made Lake Ayame, Côte d'Ivoire

    Effects of three agricultural by-products on cage culture growth performances of a landlocked population of <em>Sarotherodon melanotheron</em> (Teleostei: Cichlidae) in man-made Lake Ayame, Côte d'Ivoire

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    In man-made Lake Ayame, a 180-day cage culture feeding trial was conducted to investigate the effects of three agricultural by-products — chicken droppings, wheat bran and corn bran — on the survival rates, mean daily weight gain and feed conversion...
  7. Heavy metal and faecal bacterial contamination of urban lakes in Yaoundé, Cameroon

    Heavy metal and faecal bacterial contamination of urban lakes in Yaoundé, Cameroon

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Concentrations of faecal bacteria and heavy metals (Cr, Cd, Hg, Pb and Zn) were measured in fish, mud and water from two urban lakes in Yaoundé, Cameroon. The mean densities of faecal coliforms (FC) and faecal streptococ ci (FS) in...
  8. The effect of crowding density on growth, food conversion ratio and survival of juvenile dusky kob <em>Argyrosomus japonicus</em> (Teleostei: Sciaenidae)

    The effect of crowding density on growth, food conversion ratio and survival of juvenile dusky kob <em>Argyrosomus japonicus</em> (Teleostei: Sciaenidae)

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Dusky kob or mulloway Argyrosomus japonicus is a potential aquaculture candidate, but data on growth of this species in South Africa are missing. To determine the effect of crowding density (kg m−3) on growth, survival and food conversion ratio, juvenile...
  9. Fish health status, research and management in East Africa: past and present

    Fish health status, research and management in East Africa: past and present

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    This paper reviews the state of research on fish pathogens in Burundi, Kenya, Rwanda, Tanzania and Uganda from the early 1900s, the period when fisheries management started in the region, to date, and evaluates the current policy, regulatory frameworks, management...
  10. Characterisation of potential aquaculture pond effluents, and physico-chemical and microbial assessment of effluent-receiving waters in central Ghana

    Characterisation of potential aquaculture pond effluents, and physico-chemical and microbial assessment of effluent-receiving waters in central Ghana

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    An understanding of specific aquaculture systems and the impacts of their management practices leads to sound and cost-effective policies to protect the aquatic environment. Water samples were collected in 2009 from fish ponds, streams that receive effluents directly from ponds...