Search for dissertations about: "Fish farm"

Showing result 1 - 5 of 15 swedish dissertations containing the words Fish farm.

  1. 1. Phosphorus Emissions from Fish Farms Observed and Predicted Effects

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Torbjörn Johansson; Kurt Pettersson; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Fish farm; phosphorus; eutrophication; model; Geovetenskap; NATURAL SCIENCES Earth sciences; NATURVETENSKAP Geovetenskap; Sedimentology; sedimentologi;

    Abstract : During the last decades, fish farming has been a rapidly increasing industry in many European and North American countries. Sweden has a large potential for aquaculture, but there is also a strong concern about the effects on the environment that an increased aquaculture production may cause. READ MORE

  2. 2. Predictive Models and Eutrophication Effects of Fish Farms

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Lennart Nordvarg; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Fish farm; eutrophication; model; Geovetenskap; NATURAL SCIENCES Earth sciences; NATURVETENSKAP Geovetenskap; Sedimentology; sedimentologi;

    Abstract : Aquaculture has become one of the fastest growing food industries in the world. Like many other industries, aquaculture, and especially fish farms may cause negative effects on the environment, such as eutrophication, which is recognised as a major threat to aquatic ecosystems. READ MORE

  3. 3. Early dietary exposure is associated with allergy development in the FARMFLORA birth cohort

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Karin Jonsson; [2016]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Breast milk; Allergy; Introduction of solids; Early life nutrition; Farm children; Dietary pattern; Serum; Dairy farm; Atopy; Fatty acid composition;

    Abstract : The allergy prevalence is markedly low in children growing up on farms. Contact with livestock and consumption of unpasteurized milk has been associated with allergy protection, although other elements in the environment may contribute. READ MORE

  4. 4. Evaluation of local feed resources for hybrid catfish (Clarias macrocephalus x C. gariepinus) in smallholder fish farming systems in central Vietnam

    University dissertation from ; Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences

    Author : Tram Nguyen Duy Quynh; Sveriges lantbruksuniversitet.; [2010]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The aim of this thesis was to examine the current feeding situation for fresh water fish in Central Vietnam, to evaluate the potential nutritive value of locally available feed resources for hybrid catfish (Clarias macrocephalus x C. gariepinus) and Nile tilapia, to determine the dietary requirement of lysine for hybrid catfish, to estimate the requirements for the other essential amino acids (EAA) by using ideal protein concept, and finally to evaluate the suitability of cassava leaf meal and shrimp head meal as a partial replacement for fish meal in the diet, without or with lysine supplementation, for hybrid catfish fingerlings. READ MORE

  5. 5. Evaluation of locally available feed resources for striped catfish (Pangasianodon hypophthalmus)

    University dissertation from ; Department of Animal Nutrition and Management, Swedish University of Agriculture Sciences

    Author : Chau Thi Da; Sveriges lantbruksuniversitet.; [2012]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : This thesis investigated and compared inputs and outputs, economic factors and current feed use in small-scale farming systems producing striped catfish (Pangasianodon hypophthalmus) in the Mekong Delta. The nutrient content of locally available natural feed resources for striped catfish was determined and growth performance, feed utilisation and body indices were analysed in pond-cultured striped catfish fed diets where fish meal protein was replaced with protein from local feed resources. READ MORE