Cytogenetic study of embryos from ducks
maintained in conservative ﬂocks

Department of Molecular Cytogenetics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Wólka Kosowska, Poland

Department of Waterfowl Breeding, National Research Institute of Animal Production, Dworzyska 1, 62-035 Kórnik, Poland

Publication date: 2005-08-04

Corresponding author

K. Jaszczak

Department of Molecular Cytogenetics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Wólka Kosowska, Poland

J. Anim. Feed Sci. 2005;14(3):571-575

DOI: https://doi.org/10.22358/jafs/67129/2005

Article (PDF)

KEYWORDS

embryos

chromosome abnormalities

conservative ﬂock

ducks

ABSTRACT

Conservative ﬂocks are usually small populations in which inbreeding and mutations may result in unfavourable changes. With this aim, studies were conducted on the karyotypes of duck embryos (40 h) from four conservative ﬂocks: KhO, A3, O1, LSA, maintained since the seventies as closed ﬂocks. A total of 336 embryos were examined of which 27 (8%) had an abnormal chromosome complement. The frequency of embryos with chromosome abnormalities varied from 4.9% in the A3 ﬂock to 13.7% in the LSA ﬂock. In the two remaining ﬂocks, (KhO and O1) the frequency was 5.9 and 6.6, respectively. Pure haploidy and haploid/diploid chimerism were the most frequently identified abnormalities in all ﬂocks examined.

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ISSN:

1230-1388

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