Sökning: "fertility transition"

Visar resultat 21 - 25 av 41 avhandlingar innehållade orden fertility transition.

  1. 21. The two faces of smallpox : a disease and its prevention in eighteenth- and nineteenth-century Sweden

    Författare :Peter Sköld; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; epidemiologic transition; historical demography; infectious disease; inoculation; mortality; public health; smallpox; Sweden; vaccination;

    Sammanfattning : This study deals with the history of smallpox in Sweden between 1750 and 1900 and the two preventive measures that were used against it: inoculation during the eighteenth and vaccination during the nineteenth Century. Between 1750 and 1800 300,000 children died from smallpox in Sweden. LÄS MER

  3. 22. Older immigrants in need of care in times of digitalization : The case of filial piety in transition among Chinese families in Sweden

    Författare :Xin Chen; Britt Östlund; Susanne Frennert; Magdalena Kania-Lundholm; KTH; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Acculturation; Chinese; cultural norms; digitalization; eldercare; filial piety; older immigrants; welfare state; ackulturation; kina; kulturella normer; digitalisering; äldreomsorg; plikt; filial piety; äldre invandrare; välfärdsstat; Technology and Health; Teknik och hälsa;

    Sammanfattning : Globalization has facilitated international communication and economic activities that motivate more international migration. Different cultures and values from the West and the East are interwoven in the same social context. LÄS MER

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

    Författare :Elisabeth Andrée O´ Hara; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : 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. LÄS MER

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

    Författare :Hanna Lomander; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : 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. LÄS MER

  7. 25. Extended voluntary waiting period before first insemination in primiparous dairy cows : effects on milk production, fertility, and health

    Författare :Anna Edvardsson Rasmussen; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Extension of the voluntary waiting period (VWP) before first insemination after calving, could decrease the frequency of demanding transition periods both at cow and herd level. In the initial study of this thesis, the cows were randomized to an extended (155-205 d) or conventional (35-85 d) VWP and assessed during their first and second lactation. LÄS MER