Search for dissertations about: "sow"
Showing result 1 - 5 of 14 swedish dissertations containing the word sow.
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1. Genetics of sow performance in piglet production
Abstract : The aim of this thesis was to provide knowledge about the genetic relationships concerning sow performance in piglet production. During the last decades, selection in dam lines has focused on increasing litter size and piglet growth. Consequently, the demand on the sow to provide her piglets with enough milk increases. READ MORE
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2. Impact of litter size on sow health and welfare
Abstract : Genetic improvement of litter size has been the main breeding goal in piglet production during the last decades, resulting in a steady increase in total number of born piglets in each litter both in Sweden and in other European countries. It has been suggested that large litters pose a major welfare problem for sows and piglets. READ MORE
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3. Sow reproduction and piglet performance in multi-suckling pens
Abstract : Production systems with group housing of sows at different stages of production are increasing in Europe, as an effect of public demand for more animal welfare-friendly pig production. Some niche certified piglet production systems keep lactating sows with piglets in groups in multi-suckling pens. READ MORE
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4. Breeding for robust sows : association between leg conformation, fertility and sow stayability
Abstract : The overall aim of this thesis was to investigate the possibility to breed for robust sows by improving the leg quality and conformation traits. The specific goals were to estimate the genetic correlations between leg conformation, reproduction and longevity in Swedish and Danish sows; and to identify quantitative trait loci (QTLs) as well as possible causal genes underlying leg conformation traits in pigs. READ MORE
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5. Pigs for organic production : studies of sow behaviour, piglet-production and GxE interactions for performance
Abstract : .... READ MORE