Sökning: "egg enrichment"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden egg enrichment.

  1. 1. Kan Campylobacter överföras via hönsägg?

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Författare :Jeremy Rocchio; [2021]
    Nyckelord :Campylobacter jejuni; ägg; höns; kyckling; överlevnad; överföring;

    Sammanfattning : Campylobacterios är den vanligaste rapporterade orsaken till magtarminfektion hos människor i såväl Sverige som övriga Europa och USA. Campylobacter jejuni subsp. jejuni är den underart som oftast orsakar sjukdom. Sjukdomen orsakar stora ekonomiska kostnader för samhället varje år. LÄS MER

  3. 2. 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

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

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

    Sammanfattning : 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. LÄS MER

  4. 3. Analysis of fatty acids in egg yolks of various production systems

    Master-uppsats, SLU/Department of Molecular Sciences

    Författare :Jonatan Nyberg; [2017]
    Nyckelord :egg; fatty acid; omega-3; egg enrichment; docosahexaenoic acid; omega-6 omega-3 ratio; organic; free range; DHA;

    Sammanfattning : OBJECTIVES: The objective of this study was to compare fatty acid composition of different eggs. Seven kinds of eggs from three companies were taken, including organic, free range, enriched and “farmer” eggs. RESULTS: In total 15 fatty acids were identified. LÄS MER

  5. 4. The impact of food enrichment on the behaviour of turtles in captivity : An observational study of McCord’s snake-necked turtle (Chelodina mccordi) and Vietnamese pond turtle (Mauremys annamensis)

    Master-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Erika Johansson; [2017]
    Nyckelord :Chelodina mccordi; food enrichment; Mauremys annamensis; reptile behaviour; turtle; welfare; foderberikning; beteende hos reptiler; sköldpadda; välfärd;

    Sammanfattning : McCord’s snake-necked turtle (Chelodina mccordi) and Vietnamese pond turtle (Mauremys annamensis) are two critically endangered species of fresh water turtles originating from Asia. The aim of this study was to evaluate how the two species of aquatic turtles responded to food enrichment, if feed enrichment could reduce the stereotypic behaviour displayed by the McCord’s Snake-necked turtles and if behavioural signs associated to good welfare increased in response to food enrichment. LÄS MER

  7. 5. Placing of enrichment and its impact on the distribution of hens in the outdoor run

    Master-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Mathilda Hedborg; [2016]
    Nyckelord :poultry; hens; free range; enrichment; shelters;

    Sammanfattning : The majority of the organic egg producers in Sweden are certified according to the rules of the organisation KRAV, who have stricter directions than the legislation of the European commission. In 2013, KRAV decided to clarify the rule on use of the outdoor area to ensure a maximum utilization of the offered area. LÄS MER