Reference : Effect of food intake levels on leptin and IGF-I plasma concentrations in sheep
Scientific congresses and symposiums : Paper published in a journal
Life sciences : Anatomy (cytology, histology, embryology...) & physiology
http://hdl.handle.net/2268/18849
Effect of food intake levels on leptin and IGF-I plasma concentrations in sheep
English
Archa, Bouchaib[Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Département de Médecine Vétérinaire > Laboratoire de Physiologie Animale > >]
Bister, Jean-Loup[Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Département de Médecine Vétérinaire > Laboratoire de Physiologie Animale > >]
Colinet, Frédéric[Faculté Universitaire des Sciences Agronomiques de Gembloux - FUSAGx > > Biologie animale et microbienne > >]
Kirschvink, Nathalie[Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Département de Médecine Vétérinaire > Laboratoire de Physiologie Animale > >]
Renaville, Robert[Université de Liège - ULg > Chimie et bio-industries > Biologie animale et microbienne >]
Belgian Society for Fundamental and Clinical Physiology and Pharmacology Spring Meeting 2006
6 mai 2006
Louvain-en-Woluwé
Belgique
[en] Leptin ; IGF-I ; Sheep
[en] The effect of high (H) or low (L) levels of food intake, during the preceding 51 weeks, on leptin and Insulin-like growth factor-I (IGF-I) plasma concentrations in sheep were investigated in groups of 20 adult Timahdite (non-lactating, non-pregnant) ewes. Ewes of the two treatments had similar liveweight at the start of study but there was a twofold difference in energy intake. All animals were maintained indoors under natural daylength conditions (33°53'N, 5°32'W). Blood samples were collected monthly and the statistical analyses were performed on leptin and IGF-I levels. The mean leptin plasma concentrations were higher in H ewes than L sheep (3.98±0.97 ng/ml vs 3.34±1.17 ng/ml, P<0.05). For IGF-I, from week 1 to 26, the mean plasma concentrations were higher in H ewes than L sheep (76±28 ng/ml vs 58±21 ng/ml, P<0.01). However, from week 31 to 51, the mean plasma concentrations were similar in both groups (57±24 ng/ml vs 59±25 ng/ml, P>0.05). It was concluded that the food intake levels affect significantly leptin and IGF-I plasma concentrations and consequently may be the link between food intake, body condition and reproductive performances in sheep.
[Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Département de Médecine Vétérinaire > Laboratoire de Physiologie Animale > >]
