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

Dernière mise à jour : Mai 2018

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INRA Experimental Fish Farm of the Monts d'Arrée

Expertise and Skills

PEIMA personnel are self-sufficient in monitoring experiments and understanding the scientific approach. The ability of personnel to transmit relevant animal-production and scientific information, and to adapt and learn new approaches and techniques, allows the services that PEIMA offers to evolve.

Use of an automatic feed distributor

Monitoring the feeding behaviour of fish requires specific equipment and skills. PEIMA has automatic feed distributors managed by the fish themselves via a system of tactile shafts linked to a datalogger. This system, supplied by IMETRONIC and installed on 58 tanks, allows us to perform detailed studies on feeding behaviour.

Automatic feed distributors
Automatic feed distributors

Cryopreservation

PEIMA has the skill and equipment necessary to cryopreserve trout sperm in the context of conserving aquacultural genetic resources. It can also, with the cryopreserved sperm, perform routine reproduction to optimise the management of breeding fish. The cryopreservation techniques were developed by the Fish Physiology and Genomic Laboratory in Rennes (LPGP).

Skills in large-scale freezing developed at PEIMA a few years ago have allowed INRA to begin freezing initiatives performedspecifically for the National Cryobank. In 2012, the CryoAqua bank received the first frozen sperm from rainbow trout and brown trout from INRA resources. The genetic heritage thus preserved, in a perennial and secure way, concerns animals selected for their reproduction period, growth, fat content, and ability to convert plant-based feed, and the golden genotype.

Cryopreservation laboratory
Cryopreservation vials

Control of salmonid reproduction

PEIMA has the techniques and skills necessary to create populations of diploid or triploid monosex females and to maintain and generate strains via mitotic or meiotic gynogenesis. These techniques were developed by the GénAqua team of the UMR GABI and adapted by PEIMA.

Trout eggs
Egg selection

Skills in fileting and processing fish

Understanding the mechanisms of muscular growth and assessing its effects on the quality of farmed fish is based mainly on analysing the impact of production factors. The orientation of French trout production over the past 15-20 years toward producing large trout for smoked filet requires performing experiments until the commercial stage. Our tools allow both production of large trout and analysis of flesh quality at different stages (portion, filet, large trout, smoked filet).

Trout fileting
Trout filet weighing