Search for dissertations about: "C. Farm"

Showing result 1 - 5 of 19 swedish dissertations containing the words C. Farm.

  2. 1. Anaerobic digestion of crop residues at low temperatures

    Author : Irene Bohn; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioteknik; Biotechnology; kontroll av utsläpp; Miljöteknik; Environmental technology; pollution control; methanogens; low temperature; crop residues; Anaerobic digestion; farm-scale digestion; fluorescence in situ hybridization;

    Abstract : Biogas is a renewable source of energy. Residues from agriculture contain considerable energy potential and are suitable substrates for biogas production, but in Sweden the utilization of these residues is low. The economic feasibility of biogas production in general is low, and only limited subsidies are provided by the state. READ MORE

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

    Author : Tram Nguyen Duy Quynh; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    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. 3. Infection dynamics of Cryptosporidium bovis and Cryptosporidium ryanae in cattle

    Author : Malin Åberg; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : In order to investigate the infection dynamics of the protozoan parasites Cryptosporidium bovis and Cryptosporidium ryanae in cattle, a Swedish dairy farm known to be free of C. parvum was recruited. READ MORE

  6. 4. Energy and greenhouse gas balance of decentralized energy supply systems based on organic agricultural biomass : a life cycle perspective

    Author : Marie Kimming; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : More and more farms apply organic production methods to reduce their environmental impact, but currently even organic farms are mainly using fossil fuels. Technologies available today or in the near future make it possible to produce heat, electricity and fuels from agricultural residues or woody biomass. READ MORE

  7. 5. Wild rodents as carriers of potential pathogens to pigs, chickens and humans : with special emphasis on Brachyspira spp. and Yersinia enterocolitica

    Author : Annette Backhans; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The aim of this thesis was to investigate the specific risks that rodents constitute for proliferation of pathogens and transmission of those to farm animals, and indirectly to humans. Rodents were captured in pig and chicken flocks, in wastewater treatment plants and other urban environments. READ MORE