Genetic resistance of creole goasts to cowdriosis in Guadeloupe. Status in 1995

Camus Emmanuel, Maillard Jean-Charles, Ruff G., Pépin L., Naves Michel, Matheron Gérard. 1996. Genetic resistance of creole goasts to cowdriosis in Guadeloupe. Status in 1995. Annals of the New York Academy of Sciences, 791 (791) : 46-53. Symposium on Vector-Borne Pathogens: Challenges for the 21st Century and International Trade and Animal Diseases. 3, San José, Costa Rica, 8 Mai 1995/12 Mai 1995.

Autre titre : Résistance génétique à la cowdriose des chèvres créoles en Guadeloupe

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Histoire et philosophie des sciences; Histoire, histoire de l'art, archéologie; Psychologie-éthologie-ergonomie

Résumé : A genetic predisposition to resistance (R)/susceptibility (S) has been demonstrated for cowdriosis in certain goat lines. In order to identify genetic markers of MS and to follow their transmission to the offspring, 4 groups of sires and dams were crossbred in 1991, 1992, and 1993: Rr, RS, SR, and SS. The offspring were challenged at the age of six months with subsequent challenge of the S parent. From 28 presumed S dams, 7 tumed out R and from 2 presumed S sires, I was R and the other undefinable. The resistance rate was 76% for 21 RR kids and 45% for 20 RS kids. The R character seems to be better transmitted by dams than the S one. No difference was observed between R and S goats in terms of incubation period and body temperature level after challenge. There was no statistical effect found of sex, litter size, or birth mass on the MS character; only a slight effect on daily mass gain was observed. Sperm has been collected from 4 S sires (died after challenge) and 5 R sires, and stored in liquid nitrogen in order to conceive additional SR and SS progeny. Several Caprine leucocyte antigens seem to be genetic markers of R (Be 1, CLY) and of S (Be 9, Be 22, Be 23). Further powerful tools like rnicrosatellites and probes defining other interesting loci possibly involved in disease pathogenesis are now at hand and will be included in future experiments.

Mots-clés Agrovoc : Ehrlichia ruminantium, résistance aux maladies, chèvre, marqueur génétique

Mots-clés géographiques Agrovoc : Guadeloupe, France

Classification Agris : L72 - Organismes nuisibles des animaux

Auteurs et affiliations

• Camus Emmanuel, CIRAD-EMVT-ELEVAGE-AGRICULTURE (GLP)
• Maillard Jean-Charles
• Ruff G.
• Pépin L.
• Naves Michel
• Matheron Gérard, CIRAD-GERDAT-MISSION MIPA (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/465063/)

Métriques

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