Sökning: "broiler breeder"

Hittade 5 uppsatser innehållade orden broiler breeder.

  1. 1. 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

  3. 2. Identifying factors of importance for chick quality and traits that may predict chick quality

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

    Författare :Cecilia Hjelm; [2018]
    Nyckelord :chick quality; chick quality score; first week mortality; broiler breeder; IgY yolk concentration; IgY serum concentration;

    Sammanfattning : In the hatcheries today, the eggs that have cracks are sorted out before incubation. When hatched the chicks are graded as saleable or unsaleable, and salable chicks are transported to the farm. First week mortality (FWM) is a common way to assess chick quality and performance at the farm and it varies among flocks. LÄS MER

  4. 3. 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

  5. 4. Effects on domestication and feeding on the avian melanocortin system

    Kandidat-uppsats, Linköpings universitet/Biologi

    Författare :Malin Jonsson; [2016]
    Nyckelord :Feed-restriction; hunger; arcuate nucleus; gene expression; avian melanocortin system; domestication; broiler; Red Junglefowl; stress;

    Sammanfattning : Domestication in chickens has made feed-restriction a necessity if broiler breeder hens should reach sexual maturity and be fertile. This is claimed to cause chronic hunger. LÄS MER

  7. 5. Poor welfare or future investment? Different growth pattern of broiler breeders

    Master-uppsats, Linköpings universitet/Biologi; Linköpings universitet/Tekniska fakulteten

    Författare :Andreas Calais; [2015]
    Nyckelord :Chicken; broiler breeder; welfare; stress; hunger; feed restriction; skip-a-day; morphometrics.;

    Sammanfattning : The parental stock of meat type chickens (broiler breeders) are commonly feed restricted to decrease their rapid growth and the issues associated with it. Among these birds, chronic hunger and stress are the most prominent welfare concerns and mass heterogeneity within flocks a major management challenge. LÄS MER