Abstract
The material for this investigation was obtained from a closed White Leghorn stock bred in the Department of Poultry Science at the Stellenbosch-Elsenburg College of Agriculture. As described by Poggenpoel and Erasmus (1978), the pedigree breeding genetic flock was established in 1953 when two unrelated lines were closed off from outside introductions. Inbreeding was avoided as far as possible by not allowing mating between close relatives. An inbreeding rate of only 0.515% per generation was achieved. From 1953 to 1962 the pedigree stock was selected, based on increased egg production, and since 1963 the pedigree breeding genetic flock has been kept as a production flock.
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© 1989 Springer-Verlag Berlin Heidelberg
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Vorster, W. (1989). Material and Technique. In: The Development of the Chondrocranium of Gallus gallus. Advances in Anatomy, Embryology and Cell Biology, vol 113. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-73999-6_2
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DOI: https://doi.org/10.1007/978-3-642-73999-6_2
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-50185-5
Online ISBN: 978-3-642-73999-6
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