zur Erlangung des Grades

VII-VIII List of abbreviations XIV List of tables XVI List of figures XVIII List of appendices XXVI 1 2 2.1 2.1.1 2.1.1.1 2.1.1.2 2.1.1.3 2.1.1.4 2.1.1.5 2.1.1.6 2.1.1.7 2.1.2 2.1.2.1 2.1.2.2 2.2 2.2.1 2.2.2 2.3 2.4 2.4.1 2.4.1.1 2.4.1.2 2.4.2 2.4.3 Introduction Literature review Boar reproductivity Boar sperm quality traits Appearance of semen Sperm concentration Sperm motility Semen volume Plasma droplets rate Sperm morphology Acrosome integrity Boar fertility traits Non return rate Number of piglet born alive Heritability of boar reproductivity Heritability of boar sperm quality traits Heritability of boar fertility traits The genetic aspects of boar reproductivity Candidate gene analysis A genome scan for quantitative trait loci affecting boar reproductivity QTL affecting boar sperm quality traits QTL affecting boar fertility traits Polymorphism identification of boar reproductive traits Transcriptomic of boar reproductive traits 1 3 3 4 6 7 8 8 8 9 9 10 12 12 13 13 15 16 17 18