FN Archimer Export Format
PT J
TI Agonistic behaviour and feed efficiency in juvenile Nile tilapia Oreochromis niloticus
BT 
AF de Verdal, Hugues
   O'Connell, Catherine Maeve
   Mekkawy, Wagdy
   Vandeputte, Marc
   Chatain, Beatrice
   Bégout, Marie-Laure
   Benzie, John A.H.
AS 1:1,2;2:2,7;3:2,3;4:4,5;5:5;6:6;7:2,7;
FF 1:;2:;3:;4:;5:PDG-RBE-MARBEC-LAAAS;6:PDG-RBE-HGS;7:;
C1 CIRAD, UMR116 ISEM, TA B-116/16, 73 rue Jean-François Breton, 34398 Montpellier Cedex 5, France
   Worldfish, Jalan Batu Maung, Bayan Lepas, 11960 Penang, Malaysia
   Animal Production Department, Faculty of Agriculture, Ain Shams University, Hadaeq Shubra, 11241 Cairo, Egypt
   GABI, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France
   Ifremer, UMR9190 MARBEC, Chemin de Maguelone, F-34250 Palavas-les-Flots, France
   Ifremer, Laboratoire Ressources halieutiques de la Rochelle, Place Gaby Coll, 17137 L'Houmeau, France
   School Of Biological Earth and Environmental Sciences, University College Cork, Cork, Ireland
C2 CIRAD, FRANCE
   WORLDFISH, MALAYSIA
   UNIV AINS SHAMS, EGYPT
   INRA, FRANCE
   IFREMER, FRANCE
   IFREMER, FRANCE
   UNIV COLL CORK, IRELAND
SI PALAVAS
   LA ROCHELLE
SE PDG-RBE-MARBEC-LAAAS
   PDG-RBE-HGS
UM MARBEC
IN WOS Ifremer UPR
   WOS Ifremer UMR
   copubli-france
   copubli-p187
   copubli-europe
   copubli-int-hors-europe
   copubli-sud
IF 3.224
TC 9
UR https://archimer.ifremer.fr/doc/00483/59495/62363.pdf
LA English
DT Article
DE ;Agonstic behaviour;Feed efficiency;Nile tilapia;Performances;Correlation
AB Given the strong effects of behavioural hierarchies on growth in many cultured species and the key role of feed efficiency in aquaculture economics, understanding the nature of the interaction of these variables is important for the sustainability of aquaculture. The relationship between agonistic behaviour, growth and feed efficiency in Nile tilapia, Oreochromis niloticus, was studied by rearing 120 fish in eight aquaria. Fish were video-recorded to estimate the occurrence of agonistic behaviour during a fasting and a refeeding period. Growth, feed intake and feed conversion efficiency (FCE - calculated as the inverse of feed conversion ratio (FCR)) were subsequently measured individually for each fish. Fish showed 58% less agonistic traits during the fasting period compared to the feeding period, but generally, an aggressive fish during the fasting period was also aggressive during the refeeding period. The nature of agonistic behaviours between individuals was used to assess the presence of hierarchical relationships between fish. There were dominance hierarchies established in each experimental aquarium that despite minor shifts were maintained throughout the experiment. Agonistic behaviours were strongly correlated with each other, the aggression Index (AI) and with hierarchy rank. PCA analysis of the agonistic behaviours summarising the behavioural information showed little or no correlation between agonistic behaviour, fish growth or FCE. FCE was correlated with body weight gain (BWG). These results suggest that agonistic interactions in juvenile Nile tilapia do not have a large impact on growth and feed conversion efficiency. 
PY 2019
PD APR
SO Aquaculture
SN 0044-8486
PU Elsevier BV
VL 505
UT 000462037400034
BP 271
EP 279
DI 10.1016/j.aquaculture.2019.02.067
ID 59495
ER

EF