Sökning: "rearing system"

Visar resultat 6 - 10 av 21 avhandlingar innehållade orden rearing system.

  1. 6. The role of the serotonergic system and the effects of antidepressants during brain development examined using in vivo PET imaging and in vitro receptor binding

    Författare :Stal Saurav Shrestha; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Serotonin (5-HT) and the serotonergic system, which includes the serotonin transporter (SERT) and the two G protein-coupled 5-HT1A and 5-HT1B receptors, are implicated in the pathophysiology and treatment of several neuropsychiatric disorders including major depressive disorder (MDD) and anxiety. Two classes of antidepressants—selective serotonin reuptake inhibitors (SSRIs), which block SERT, and tricyclic antidepressants (TCAs), which block several monoamine transporters—alter 5-HT levels and modulate the serotonergic system. LÄS MER

  3. 7. Brewer’s yeast as a protein source in the diet of tilapia (Oreochromis niloticus) and freshwater prawns (Macrobrachium rosenbergii) reared in a clear water or biofloc environment

    Författare :Huu Yen Nhi Nguyen; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis investigated the effects of dietary protein replacement of fishmeal or soybean meal with spent brewer’s yeast (SBY) in farmed tilapia and giant freshwater prawns. The effect of rearing tilapia and prawn in two different rearing systems, clear water recirculating aquaculture system (CW-RAS) and biofloc recirculating aquaculture system (Bio-RAS), were also investigated. LÄS MER

  4. 8. Bolivian creole cattle: population structure, genetic diversity and management practices

    Författare :Gabriela Bottani; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Characterization studies of local livestock breeds are important to identify their potential and value for the Global Animal Genetic Resources. Important traits have been attributed to local breeds including adaptability and resilience to harsh environments and other traits with potential use in breeding schemes oriented towards the challenges of climate change. LÄS MER

  5. 9. Drivers of polymorphism dynamics in pygmy grasshoppers

    Författare :Jenny Johansson; Anders Forsman; Jacob Höglund; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Evolutionary Biology; Evolutionsbiologi;

    Sammanfattning : In this thesis, I used colour polymorphism in pygmy grasshoppers as a model system to study the influence of selection, developmental plasticity, mating behaviour and gene flow on patterns of phenotypic and genetic diversity within and among populations in changing environments.Data for more than 5,000 individuals collected from natural populations showed that the incidence of black (melanic) pygmy grasshoppers was higher in burnt than in non-burnt areas, and rapidly declined over time within populations in post-fire environments. LÄS MER

  7. 10. Psychosocial aspects of depressive disorders

    Författare :Martin Eisemann; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Depression; social environment; biopsychosocial model; social support; social networks;

    Sammanfattning : The objective of this study was to elucidate the possible importance of factors from the social environment for the development of depression. As a theoretical framework, Engel's biopsychosocial model (Engel, 1980), based on systems theory, has been applied. LÄS MER