Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free:

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site:, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Google Analytics

Targeted advertising cookies


The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at or by post at:

24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

Menu Logo Principal Ministère de l'agriculture et de l'alimentation Ministère de l'enseignement supérieur, de la recherche et de l'innovation Logo_ANR Centre national de la recherche scientifique Fondation pour la recherche sur la biodiversité Laboratoire LABOGENA : analyses génétiques pour les espèces animales Logo_VetAgro Sup ANTAGENE

Home page

Genomic characterization of local pig breeds and their seeds stored in the National Cryobank

@S. Ferchaud GenESI Rouillé, paillettes et pellets en cryobanque
In this study, the genome of six local French pig breeds was characterized from a sampling of recent animals and CBN stored seeds. Recommendations for the use of CBN material could be made to take into account the genomic inbreeding and halothane genotype of the animals that produced the seeds, as well as the few traceability errors of the oldest CBN doses.

Seeds of local breeds of pigs are stored in the National Cryobank (CBN) in the form of pellets (59 boars) or straws (78 boars). They are intended to be used for conservation programs. A genomic characterization of the CBN collections on the one hand and of recent animals (240 animals) on the other hand is carried out by genotyping (70K chip). The Basque, Gascon, Cul Noir Limousin, Bayeux Pig, Western White Pig and Nustrale breeds are thus studied over three periods: average birth years 1986 (pellets), 1998 (flakes) and 2014 (recent animals). Multidimensional analysis of the genotyping data shows a grouping of animals by breed. Some traceability errors of the oldest seeds (pellets) are detected. The average genomic similarity between animals of the same breed is lowest in the Nustrale breed and highest in the Basque breed. In recent animal samples, the absence of certain alleles found in the DNA of older seeds underlines the interest of CBN. The evolution over time of the halothane status of local breeds differs according to regular or irregular genotyping practices. Finally, the genomic inbreeding (FROH) of animals, defined as the proportion of genome in homozygous chromosome segments, is estimated. The Bayeux breed, considered as the most inbred on the basis of pedigrees, is in a more favourable situation than the Basque and Cul Noir Limousin breeds at the genomic level. FROH values above 0.22 seem to be associated with more frequent breeding failures with CBN seeds.
In this study, the genome of the six local French pig breeds was characterized from a sampling of recent animals and CBN stored seeds. Recommendations for the use of CBN material could be made to take into account the genomic inbreeding and halothane genotype of the animals that produced the seeds, as well as the few traceability errors of the oldest CBN doses. While boars with the lowest FROH are the most interesting in terms of genetic variability, more inbred CBN boars may carry original alleles. Nevertheless, the use of seeds with high genomic inbreeding may require the development of specific insemination methods to compensate for the possible lack of fertilizing power. This dataset will also be used to develop molecular tools for breed assignment. Further studies of genetic diversity may also be carried out.
This work was carried out within the framework of the Caraloporc project funded in 2015 by the CRB-Anim project, an infrastructure of the Investissements d'Avenir program. Part of the genotyping data comes from the H2020 TREASURE program (GA n°634476). The text reflects only the opinion of the authors.

See also

Reference :

Marie-José Mercat, Yann Labrune, Katia Feve, Stéphane Ferchaud, Herveline Lenoir, Juliette Riquet. 2020. Caractérisation génomique des races locales porcines et de leurs semences stockées dans la Cryobanque Nationale. Journées Recherche Porcine, 52, 1-6.