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Pure line laying chickens at the Agassiz Research Centre

Published online by Cambridge University Press:  01 August 2011

F.G. Silversides ,
D. McQ. Shaver  and
Y. Song
F.G. Silversides
Affiliation:
Agassiz Research Centre P. O. Box 1000, Agassiz, British Columbia, Canada VOM 1A0
D. McQ. Shaver
Affiliation:
Suite 901, 20 Berkley Road, Cambridge, Ontario, CanadaN1S 4S8
Y. Song
Affiliation:
Agassiz Research Centre P. O. Box 1000, Agassiz, British Columbia, Canada VOM 1A0
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Summary

Six lines of laying chickens representing high-producing non-industrial lines chosen or produced with consideration for characters of production are being kept at the Agassiz Research Centre. The collection includes one Barred Plymouth Rock (Line 60), one Columbian Plymouth Rock, one Rhode Island Red (Line 50), and three White Leghorn lines (Blue, Black, and Burgundy). Before coming to the Agassiz Research Centre these pure lines were subjected to mild selection for egg production and their egg production approaches that of commercial hybrids. The lines are currently maintained as a genetic resource as live populations without selection and with populations large enough to minimize inbreeding. In addition, samples of DNA from these lines have been conserved for genetic studies, and samples of embryonic cells are being kept cryogenically to allow the possibility of reconstitution of the lines through the production of germline chimeras. Techniques of ovarian transplantation are being developed which will allow more efficient cryogenic conservation and recuperation of the genetic material into live populations.

Résumé

Six lignées de poules pondeuses représentant des lignées de hautes production mais non industrielles choisies ou produites en considérant des caractères de production sont gardées au centre de recherches d'Agassiz. La collection inclut une lignée de Plymouth Rock Barrée (Lignée 60), une de Plymouth Rock Colombienne, une de Rouge de Rhode Island (Lignée 50), et trois lignées Leghorn Blanches (Bleu, Noir, Bourgogne). Dans le passé, ces lignées ont été soumises à la sélection pour les caractères de production et la production d’œufs des ces lignées pures s'approche à celle des lignées hybrides commerciales. Ces lignées sont actuellement maintenues comme ressources génétiques comme des populations vivantes sans sélection avec des populations suffisamment grandes pour minimiser la consanguinité. En plus, des échantillons d'ADN des ces lignées sont gardés pour les études de génétique et des échantillons des cellules embryoniques sont gardés en congélation pour permettre la reconstitution de ces lignées par moyen des chimères des lignées de cellules germe. Des techniques de transplantation ovarienne sous développement vont permettre la conservation cryogénique plus efficace avec récupération du matériel génétique dans les populations vivantes.

Keywords

Laying chickenMiddle level poultryGenetic conservationCryogenic storage
Type
Research Articles
Information
Animal Genetic Resources/Resources génétiques animales/Recursos genéticos animales , Volume 40 , April 2007 , pp. 79 - 85
Copyright
Copyright © Food and Agriculture Organization of the United Nations 0000

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