Sökning: "broiler breeders"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden broiler breeders.

  1. 1. The broiler production systems of Sweden and the United States : a comparison of the processing systems andhealth and welfare programs

    Kandidat-uppsats, SLU/Department of Molecular Sciences

    Författare :DenaMarie Bengtsson; [2021]
    Nyckelord :animal welfare; antibiotics; automation in poultry production; breeders; broilers; conventional broilers; feed; hatcheries; organic broilers; poultry production; poultry slaughter; poultry vaccines;

    Sammanfattning : The aim of this thesis was to research broiler production in Sweden and the United States and to evaluate their processing systems as well as their health and welfare regulations. Sweden produces 110 million broilers a year and the United States produces 9 billion broilers a year. LÄS MER

  3. 2. Feeding brown algae and brown algae extracts from Saccharina Latissima to Broiler breeders : effects on transfer of antibodies and nutrients from hen to egg

    Master-uppsats, SLU/Dept. of Animal Nutrition and Management

    Författare :Stina Kling; [2021]
    Nyckelord :broiler; broiler breeder; brown algae; Saccharina Latissima; laminarin; prebiotic; transfer; antibodies; nutrients; iodine; chicken; egg quality;

    Sammanfattning : Brown algae and extracts of algae have been proved to have prebiotic effects. Seaweeds grow very fast and underwater. This is good from a sustainable point of view since algae do not need fertilizers, freshwater or agricultural land for growth. Brown algae is rich in nutrients, vitamins and minerals, and has an especially high content of iodine. LÄS MER

  4. 3. Skip-a-day feeding does not cause difference in liver lipid content in broiler breeders

    Kandidat-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Elin Sander; [2017]
    Nyckelord :Broiler breeders; dry weight; feed restriction; lipids; liver; skip-a-day;

    Sammanfattning : There has long been evidence for increased lipids in the liver of chickens exposed to feed restriction, commonly used for production hens. Lipogenesis is an important part of the metabolism and storing of glucose, a source of energy. LÄS MER

  5. 4. Physiological stress and behavioural differences in broiler breeder hens subjected to daily and 5:2 feed restriction regimens

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Alexandra Johansson; [2016]
    Nyckelord :Broiler breeder; feed restriction; H L ratio; skip-a-day; stress; welfare;

    Sammanfattning : Feed restriction in the parental stock of meat producing chickens, broiler breeders, is essential in order to decrease the high growth rate that they are genetically selected for. The feed restriction does however lead to chronic hunger and stress. LÄS MER

  7. 5. Föräldradjur inom slaktkycklingindustrin : välfärdsproblem och försök till åtgärder

    Kandidat-uppsats, SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Författare :Madeleine Bichel; [2016]
    Nyckelord :broiler; slaktkyckling; föräldradjur; välfärdsproblem; foderrestriktioner; feed restrictions; broiler breeders; welfare problems;

    Sammanfattning : Dagens slaktkycklingindustri har medfört flera välfärdsproblem för de avelsfåglar (föräldradjuren) som används för att producera slaktkycklingar och detta arbete syftar till att ge en överblick över dessa välfärdsproblem samt redogöra för eventuella försök till åtgärder som gjorts. De mest uppmärksammade problemen handlar om foderrestriktioner samt aggressiva beteenden vid parning. LÄS MER