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A kinetic study of the natural induction of liver steatosis in Greylag Landaise geese: the role of hyperphagia1

Published online by Cambridge University Press:  26 February 2016

X. Fernandez ,
G. Guy ,
J. B. Laverze ,
C. Bonnefont ,
C. Knudsen  and
L. Fortun-Lamothe
X. Fernandez*
Affiliation:
INRA, UMR1388 Génétique, Physiologie et Systèmes d’Elevage, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENSAT, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENVT, F-31076 Toulouse, France
G. Guy
Affiliation:
INRA, UMR1388 Génétique, Physiologie et Systèmes d’Elevage, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENSAT, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENVT, F-31076 Toulouse, France INRA, UE89 Palmipèdes à Foie Gras, Domaine d’Artiguères, F-40280 Benquet, France
J. B. Laverze
Affiliation:
INRA, UE89 Palmipèdes à Foie Gras, Domaine d’Artiguères, F-40280 Benquet, France
C. Bonnefont
Affiliation:
INRA, UMR1388 Génétique, Physiologie et Systèmes d’Elevage, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENSAT, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENVT, F-31076 Toulouse, France
C. Knudsen
Affiliation:
INRA, UMR1388 Génétique, Physiologie et Systèmes d’Elevage, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENSAT, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENVT, F-31076 Toulouse, France
L. Fortun-Lamothe
Affiliation:
INRA, UMR1388 Génétique, Physiologie et Systèmes d’Elevage, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENSAT, F-31326 Castanet-Tolosan, France UMR1388 Génétique, Physiologie et Systèmes d’Elevage, Université de Toulouse INPT ENVT, F-31076 Toulouse, France
*
†E-mail: [email protected]
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Abstract

We have previously demonstrated that a sharp rise in feed intake (hyperphagia) and spontaneous liver steatosis could be experimentally induced in domestic Greylag geese by combining a short photoperiod and a sequence of feed restriction followed by ad libitum corn feeding during the fall and the winter. In this previous work, however, individual feed intake could not be recorded. The present study aimed at evaluating the relationship between level and pattern of hyperphagia and liver weight with an individual control of feed intake in individually housed (IH) geese, while comparing the performances with group housed (GH) geese. A total of 300 male geese of 19 weeks of age, were provided with corn ad libitum after an initial feed restriction period. From 21 to 23 weeks of age, the daylight duration was progressively reduced from 10 to 7 h and kept as such until the end of the experiment (week 36). In all, 30 GH and 30 IH geese were slaughtered at 19, 27, 30, 32 and 36 weeks of age. Feed intake was measured per group in GH geese and individually in IH geese. During the 1st week of corn feeding, the average feed intake rose up to 600 g/goose per day in GH geese but not in IH geese where the feed intake rose gradually from 300 to 400 g/day. The liver weight increased from 93 g (week 19) to 497 g (week 32; P<0.05) in GH birds. In IH birds, liver weights were, on average, much lower (ranging from 220 to 268 g) than in GH birds (P<0.05). In GH and IH bird, the variability in the individual response to corn feeding was very high (liver weight cv ranging from 63% to 83% depending on slaughter age). A close correlation between corn consumption and liver weight was evidenced in IH birds at each slaughter age (R2 ranging from 0.62 to 0.79), except at 36 weeks of age where this correlation was weak (R2=0.14). The variability in the extent of liver steatosis is very high and our results in IH birds clearly point out the major role of hyperphagia, mainly at the beginning of the ad libitum corn feeding period, on the development of spontaneous liver steatosis.

Keywords

geesehyperphagiaspontaneous fatteningliver steatosis
Type
Research Article
Information
animal , Volume 10 , Issue 8 , August 2016 , pp. 1288 - 1295
Copyright
© The Animal Consortium 2016 

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Footnotes

1

The present study was supported by fundings from PHASE Division of the Institut National de la Recherche Agronomique (INRA France).

References

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