This diploma work examines the breeding of ornamental chicken breeds as an intersection of tradition, science and practise, emphasising its contribution to the preservation of genetic diversity and the transfer of knowledge. In Slovenia, where intensive egg and meat production dominates and extensive farming accounts for a smaller share, hobby poultry breeding with purebred birds takes centre stage, with breed standards, exhibition culture and animal welfare playing a central role. The diploma work describes the historical and cultural development of ornamental breeds, the importance of standardisation in animal breeding and the role of breeders’ organisations. Particular emphasis is placed on breeding techniques for exhibition purposes, including the selection of animals, behavioural preparation, hygiene and care, transport and quarantine. The genetic section summarises the most important molecular findings on the development of ornamental traits (comb morphology, feather structure, pigmentation, eggshell colour), which enable targeted mating and the reduction of pleiotropic risks. The ethological section highlights the differences between breeds in terms of fear and stress responses as well as practises to improve manageability and show performance (early handling, environmental enrichment, behavioural selection). The section on health addresses the challenges of biosecurity in small hobby flocks and the risks associated with animal mobility and exhibiting, and suggests minimal packages of measures to mitigate these hazards. The conclusion emphasises that the sustainability of ornamental poultry breeding rests on three pillars: Breed standards and exhibitions as mechanisms for quality assurance and education, scientific genetics and ethology as a basis for responsible selection, and legalorganisational support to ensure biosecurity and animal welfare. Measures are proposed to strengthen behavioural and health aspects and to maintain breed integrity in the long term.
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