Search for dissertations about: "Summer farm"

Found 5 swedish dissertations containing the words Summer farm.

  2. 1. On-farm cow mortality in Swedish dairy herds

    Author : Karin Alvåsen; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : A high rate of on-farm cow mortality (i.e. unassisted death and euthanasia) is both a financial concern and an important animal welfare issue. The overall aim of this thesis was to evaluate the development of mortality in Swedish dairy herds and to identify characteristics associated with on-farm mortality at cow and herd levels. READ MORE

  4. 2. Effects of farmland heterogeneity at multiple spatial and temporal scales on house sparrow (Passer domesticus) population ecology

    Author : Maria von Post; Biodiversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Farmland heterogeneity; house sparrow; agricultural intensification; farm specialisation; landscape complementation; resource separation; population limitation;

    Abstract : Strong declines of European farmland birds in recent decades are assumed to be caused by decreased food availability resulting from agricultural intensification and concomitant loss of farmland heterogeneity. One of the species suffering particularly strong declines in NW European countries is the house sparrow. READ MORE

  5. 3. Transmission and dynamics of VTEC O157:H7 : a story about the complex associations between pathogen, host and environment

    Author : Lena-Mari Tamminen; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : Verotoxin-producing Escherichia coli serotype O157:H7 (VTEC O157:H7), is a zoonotic pathogen often transmitted from cattle to humans. In Sweden, domestic transmission of a highly virulent subtype of VTEC O157:H7, originating in regional clusters of infected cattle farms, is increasing. READ MORE

  6. 4. Animal transport and welfare with special emphasis on transport time and vibration

    Author : Samuel Aradom Messmer; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Farm animals are transported several times during their lifetime and often long distances, and most of them are to slaughter. During transport they are exposed to a number of stress inducing factors. The main objective of the thesis work was to study the welfare of pigs, cows and bulls during transport from farm to abattoir. READ MORE

  7. 5. Cooperation and conflict over the struggle to reproduce in harsh environments : An experimental field study on ostriches

    Author : Julian Melgar; MEMEG; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; social; grupp; konkurrens; konflikt; fusk; värme; stress; tolerans; complexitet; variation; social; group; competition; conflict; cheating; heat; stress; tolerance; complexity; variation;

    Abstract : People are used to hearing that evolution is about the survival of the fittest. Theyimagine a world full of bullies that ruthlessly fight their way to the top in the struggle for life, leaving the weak behind. But this doesn’t need be the case. READ MORE