Search for dissertations about: "growth animal"

Showing result 11 - 15 of 360 swedish dissertations containing the words growth animal.

  2. 11. Teleost reproduction: Aspects of Arctic char (Salvelinus alpinus) oocyte growth and maturation

    Author : Håkan Berg; Per-Erik Olsson; Birgitta Norberg; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Zoophysiology; Salmonid; oocyte growth; vitellogenin; vitelline envelope protein; stress; cortisol; oocyte maturation; membrane receptor; Zoofysiologi; Animal physiology; Zoofysiologi; Zoophysiology; zoofysiologi;

    Abstract : In all vertebrate species, reproduction is a hormonally controlled process, important for growth and maturation of gonads and germ cells. Production of functional germ cells is of outmost importance to secure the survival of a species. Fish comprises 50% of the known vertebrates and are found in aquatic habitats all over the world. READ MORE

  4. 12. Correlated selection responses in animal domestication : the behavioural effects of a growth QTL in chickens

    Author : Anders Wirén; Per Jensen; Elena Jazin; Linköpings universitet; []
    Keywords : ;

    Abstract : Studying animal domestication offers an opportunity to understand the mechanisms of evolution. Domestication is associated with a change in selection pressures; selection for production traits is introduced, and animals are faced with larger and denser social groups. READ MORE

  5. 13. Growth hormone and the heart in children

    Author : Anders Nygren; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Growth hormone secretion pattern; Cardiac dimensions; Growth hormone treatment;

    Abstract : Background and Aims: The fact that growth hormone (GH) influences cardiovascular structure and function is well established through both human and animal studies. Despite being secreted in a pulsatile fashion, only the impact of peak GH concentrations on cardiac parameters has previously been reported, and the time-dependency of cardiovascular effects during GH treatment has not been detailed. READ MORE

  6. 14. Growth conditions and individual quality in starlings

    Author : Martin Granbom; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal ecology; Djurekologi; cost of reproduction; individual quality; long-term effects; early condition; starling; Sturnus vulgaris;

    Abstract : Variation in growth conditions during ontogeny may result in permanent differences in individual quality. This thesis focuses on how starlings are affected by environmental variation during the nestling period. Both landscape differences in food availability and experimental food supplementation affected survival and growth of nestlings. READ MORE

  7. 15. Genetics of sow performance in piglet production

    Author : Helena Lundgren; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : The aim of this thesis was to provide knowledge about the genetic relationships concerning sow performance in piglet production. During the last decades, selection in dam lines has focused on increasing litter size and piglet growth. Consequently, the demand on the sow to provide her piglets with enough milk increases. READ MORE