ORIGINAL PAPER
Cytogenetic study of embryos from ducks maintained in conservative flocks
 
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1
Department of Molecular Cytogenetics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Wólka Kosowska, Poland
2
Department of Waterfowl Breeding, National Research Institute of Animal Production, Dworzyska 1, 62-035 Kórnik, Poland
CORRESPONDING AUTHOR
K. Jaszczak   

Department of Molecular Cytogenetics, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Wólka Kosowska, Poland
Publication date: 2005-08-04
 
J. Anim. Feed Sci. 2005;14(3):571–575
 
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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.
ISSN:1230-1388