Essays about: "Laying hen"

Showing result 1 - 5 of 27 essays containing the words Laying hen.

  1. 1. Uppväxtmiljöns påverkan på den unga värphönans stressnivå

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Agnes Wijk; [2024]
    Keywords : värphöns; uppväxtmiljö; stress; beteende; H L kvot; multifaktoriellt beteendetest;

    Abstract : Kronisk stress inom äggproduktionen resulterar i stora negativa konsekvenser på djurvälfärd och produktion och kan bland annat uppstå när hönorna ej tillåts ge utlopp för deras beteendebehov. Denna studie utfördes för att bidra med information kring hur uppväxtmiljön bör utformas för att minska stressnivån hos kycklingarna. READ MORE

  3. 2. Feeding Live or Dried Black Soldier Fly Larvae (Hermetia illucens) to laying hens – Effects on Immune Traits, Egg Quality, Feather Condition, Body and Organ Weights

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Adnan Aslam; [2023]
    Keywords : Black soldier fly; live larvae; dried larvae; immune response; egg quality; body weight; feather condition scoring;

    Abstract : Due to increasing prices and potential scarcity of soybean meal (SBM), there is growing demand for alternative and sustainable protein sources in poultry production. Black soldier fly larvae (BSFL) have proven to be a suitable alternative based on nutritional value and sustainable production. READ MORE

  4. 3. Providing live black soldier fly (Hermetia illucens) larvae to laying hens (Gallus gallus domesticus) using three different methods : effects on foraging behaviour and production parameters

    University essay from SLU/Dept. of Animal Nutrition and Management

    Author : Ronja Lindell; [2021]
    Keywords : laying hens; black soldier fly larvae; environmental enrichment; foraging; feather pecking;

    Abstract : Feather pecking is a major welfare issue in commercial egg production. Feather pecking is thought to be a form of re-directed foraging pecking behaviour. When hens are deprived of the necessary conditions to perform foraging behaviour the risk of developing feather pecking increases. READ MORE

  5. 4. Marktäckande material som åtgärd för minskat fosforläckage från rasthagar för värphöns

    University essay from SLU/Dept. of Soil and Environment

    Author : Ebba Hellstrand; [2019]
    Keywords : utehöns; fosforbindningsförmåga; punktbelastning;

    Abstract : Today there is a knowledge gap about phosphorus leakage from free range laying hens, and because of that a pilot project is ongoing since 2016 with scientists at The University of Agricultural Sciences (SLU), Research Institutes of Sweden (RISE) and also advisors in order to investigate the nutrient load from free range laying hens. My thesis have been conducted within this project, and I have chosen to focus on phosphorus leakage. READ MORE

  6. 5. Optimal light spectrum to laying hens

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Rosan De Groot; [2018]
    Keywords : laying hen; behavior; light; spectrum; preference;

    Abstract : Modern poultry farming still struggles with high levels of feather pecking in laying hens (Gallus gallus domesticus). This form of abnormal pecking behavior is known to be affected by multiple factors, including effects from the light environment. READ MORE