Search for dissertations about: "milk yield in cows"

Showing result 16 - 20 of 29 swedish dissertations containing the words milk yield in cows.

  2. 16. Energy status related to production and reproduction in dairy cows : prevention of decreased fertility and detection of cows at risk

    Author : Hanna Lomander; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Decreased fertility in dairy cows is widespread and economically undesirable. Current management strategies to prevent decreased fertility are exploiting the close relationship between negative energy balance in transition cows and subsequent decreased fertility. READ MORE

  4. 17. Improved utilisation of grass silage in milk production : harvesting strategy and feeding value

    Author : Degong Pang; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The aim of the studies reported in this thesis was to optimise grass silage utilisation in milk production. In the first paper of this thesis data from digestibility trials with sheep fed at maintenance level were used to investigate the effect of forage type and harvesting time of silage on energy and N metabolism. READ MORE

  5. 18. The effect of dry period length on milk production, health and fertility in two cow breeds

    Author : Elisabeth Andrée O´ Hara; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The transition from not producing milk during the dry period to the huge nutrient demands as milk production rapidly increases after parturition imposes significant metabolic strain on high-yielding dairy cows. The drying-off procedure is also demanding and high milk yield at dry-off increases the risk of mastitis and metabolic problems. READ MORE

  6. 19. Effects of increasing the proportion of high-quality grass silage in the diet of dairy cows

    Author : Mikaela Lindberg; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The Swedish dairy cow has almost doubled its annual milk yield over a few decades. This has simultaneously led to an increase in the dietary proportion of concentrate in order to meet the increased nutritional requirement of dairy cows. READ MORE

  7. 20. Genetics of colostrum, milk and serum antibodies in dairy cattle: implications for health and production

    Author : Juan Cordero; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Colostrum with sufficient IgG content is essential for the newborn calf, as it requires this passive immunity to survive during its rearing. Failure of passive transfer (FPT) occurs when a calf does not absorb enough antibodies (... READ MORE