Impact of a divergent selective breeding programme on individual feed conversion ratio in Nile tilapia Oreochromis niloticus measured in groups by video-recording

Autor: Vincent Douchet, Hugues de Verdal, Pierrick Haffray, Marc Vandeputte
Přispěvatelé: Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement [IRD] : UR226-Centre National de la Recherche Scientifique (CNRS), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), Génétique Animale et Biologie Intégrative (GABI), Université Paris-Saclay-AgroParisTech-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD), European Marine and fisheries Fund (EMFF), French government
Jazyk: angličtina
Rok vydání: 2022
Předmět:
food.ingredient
Efficacité conversion alimentaire
Fish farming
Feed efficiency
[SDV]Life Sciences [q-bio]
Sélection
chemical and pharmacologic phenomena
Aquaculture
Aquatic Science
Biology
Selective breeding
Genetic correlation
Feed conversion ratio
03 medical and health sciences
Nile tilapia
Animal science
food
Selection response
Pisciculture
030304 developmental biology
2. Zero hunger
L02 - Alimentation animale
0303 health sciences
Oreochromis niloticus
Tilapia
04 agricultural and veterinary sciences
Heritability
Genetic parameters
biology.organism_classification
L10 - Génétique et amélioration des animaux
génétique animale
Oreochromis
040102 fisheries
0401 agriculture
forestry
and fisheries
M12 - Production de l'aquaculture
Amélioration des animaux
Alimentation des poissons
sustainable aquaculture [EN]
Zdroj: Aquaculture
Aquaculture, 2022, 548, ⟨10.1016/j.aquaculture.2021.737572⟩
Aquaculture (0044-8486) (Elsevier BV), 2022-02, Vol. 548, N. Part 1, P. 737572 (8p.)
ISSN: 0044-8486
DOI: 10.1016/j.aquaculture.2021.737572⟩
Popis: International audience; Feed conversion ratio (FCR) is an important trait to target in breeding programs in order to improve fish farming sustainability and increase environmental efficiency. Due to the complexity of accurately measuring the individual feed consumption of fish, developing a selective breeding programme to improve FCR is a challenge. Using video-recordings of several consecutive meals in tilapia groups, we selected two divergent lines of Nile tilapia for high (FCR+) and low (FCR-) FCR at juvenile stage (12.2 g) combining BLUP and within family selection. After two generations, we observed a 12% realized difference in FCR between both divergent lines, indicating that the inclusion of FCR in a selective breeding programme can be efficient in practice. This divergence was in line with a realized heritability of 0.19 for FCR. The divergence in estimated breeding values of FCR between the two lines was reduced (3%) but still present. Another important result was that the realized genetic correlation between FCR and Daily Weight Gain (DWG) was highly negative (rg = -0.69 + 0.16), meaning that improving growth by selective breeding would also indirectly improve FCR in juvenile Nile tilapia, although direct selection for FCR would be more efficient than indirect selection through growth to improve FCR.
Databáze: OpenAIRE
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