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Title: Peripheral "chicken" obestatin administration does not affect feed intake and gut muscle contractility of meat-type and layer-type chicks (Gallus gallus domesticus)
Authors: Song, Zhigang ×
Verhulst, Pieter-Jan
Ansari, Zarbakht
Thijs, Theo
Depoortere, Inge
Everaert, Nadia
Decuypere, Eddy
Buyse, Johan #
Issue Date: Aug-2012
Publisher: Elsevier/North-Holland
Series Title: Regulatory Peptides vol:177 issue:1-3 pages:60-67
Article number: 10.1016/j.regpep.2012.04.009
Abstract: Obestatin has recently been discovered in the rat stomach. As for ghrelin, the 23-amino acid obestatin is also derived from post-translational processing of the prepro-ghrelin gene but seems to have opposite effects on feed intake. In avian species, ghrelin is mainly present in the proventriculus and decreases feed intake, as opposed to its orexigenic properties in mammals. An obestatin-like sequence was also found in the avian ghrelin precursor protein but the potential involvement of this peptide in appetite regulation of chickens is unclear. We therefore investigated the effects of a single peripheral administration of this predicted "chicken" obestatin peptide on voluntary feed intake of 7- to 9-day-old meat-type and layer-type chicks. "Chicken" obestatin was injected intraperitoneally or intravenously at a dose of 1 nmol or 10 nmol/100 g body weight and feed intake was measured up to 4 h post injection. None of these treatments did reveal any effect of the putative "chicken" obestatin on appetite of either meat-type of layer-type chicks. Furthermore, "chicken" obestatin also failed to affect the in vitro contractility of muscle strips from crop and proventriculus. In conclusion, in the given experimental settings, the putative "chicken" obestatin has indistinctive physiological effects on feed intake and in vitro muscle contractility of gut segments, and hence its functional properties in ingestive behavior of avian species remain obscure.
URI: 
ISSN: 0167-0115
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Translational Research in GastroIntestinal Disorders
× corresponding author
# (joint) last author

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