Genetic relationship between koi herpesvirus disease resistance and production traits inferred from sibling performance in Amur mirror carp

Type Article
Date 2020-04
Language English
Author(s) Zhao Jinfeng1, Prchal Martin1, Palaiokostas Christos2, 3, Houston Ross D.3, Kause Antti4, Vandeputte Marc5, 6, Vergnet Alain6, Bugeon Jérôme7, Bestin Anastasia8, Veselý Tomáš9, Pokorová Dagmar9, Piačková Veronika1, Pojezdal Lubomír9, Genestout Lucie10, Gela David1, Kroupová Hana K.1, Kocour Martin1
Affiliation(s) 1 : University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25 Vodňany, Czech Republic
2 : Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Box 7090, 750 07 Uppsala, Sweden
3 : The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Midlothian, EH25 9RG, Scotland, United Kingdom
4 : Natural Resources Institute Finland (Luke), Biometrical Genetics, FI-31600 Jokioinen, Finland
5 : GABI, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France
6 : Ifremer, Chemin de Maguelone, F-34250 Palavas-les-Flots, France
7 : LPGP, INRA, F-35000 Rennes, France
8 : SYSAAF, LPGP/INRA, Campus de Beaulieu, F-35042 Rennes, France
9 : Veterinary Research Institute, Hudcova 70, Brno 62100, Czech Republic
10 : LABOGENA-DNA, 78350 Jouy-en-Josas, France
Source Aquaculture (0044-8486) (Elsevier BV), 2020-04 , Vol. 520 , P. 734986 (6p.)
DOI 10.1016/j.aquaculture.2020.734986
WOS© Times Cited 1
Keyword(s) Common carp, KHVD, Body shape traits, Slaughter yields, Heritability, Genetic correlation
Abstract

Koi herpesvirus disease (KHVD) is currently the most serious threat to global carp farming. Prevention is a sensible strategy for tackling this disease and improved genetic resistance of carp strains is a desirable breeding goal. To study the potential for multitrait selection, the objective of the current study was to estimate the genetic correlations between KHVD resistance and production traits in Amur mirror carp. A total of 1500 fingerlings from four factorial crosses of five dams and ten sires were challenged with Koi herpesvirus (KHV). Juvenile growth-related traits were collected on the same individuals before the challenge test. Production traits were measured on siblings of the challenged population at different life stages (yearling to market size). The estimated heritability for resistance to KHVD was 0.43 ± 0.08 on the observed scale and 0.72 ± 0.13 on the underlying liability scale. Most genetic correlations between KHVD resistance and important production traits were insignificant, showing that selection for improved production traits would not increase susceptibility to KHV and vice versa. However, resistance to KHVD was negatively correlated with Fulton's condition factor (FC) after the second overwintering and relative head length (RHL), relative body height (RBH) and relative body width (RBW) from the second growing season to the market size, with a more prolonged body shape of Amur mirror carp (genes from Amur wild scaly carp, Cyprinus rubrofuscus) being associated with higher KHVD resistance. Intermediate favorable genetic correlations between KHVD resistance and log-log residuals of headless carcass yield (0.37 ± 0.14) and fillet yield (0.44 ± 0.13) at market size suggested that selection for improved yields of edible body parts might indirectly lead to a slight improvement in KHVD resistance and vice versa.

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Zhao Jinfeng, Prchal Martin, Palaiokostas Christos, Houston Ross D., Kause Antti, Vandeputte Marc, Vergnet Alain, Bugeon Jérôme, Bestin Anastasia, Veselý Tomáš, Pokorová Dagmar, Piačková Veronika, Pojezdal Lubomír, Genestout Lucie, Gela David, Kroupová Hana K., Kocour Martin (2020). Genetic relationship between koi herpesvirus disease resistance and production traits inferred from sibling performance in Amur mirror carp. Aquaculture, 520, 734986 (6p.). Publisher's official version : https://doi.org/10.1016/j.aquaculture.2020.734986 , Open Access version : https://archimer.ifremer.fr/doc/00604/71623/