Document Detail

Influence of vagotomy in domestic fowls on feeding activity, food passage, digestibility and satiety effects of two peptides.
MedLine Citation:
PMID:  6100394     Owner:  NLM     Status:  MEDLINE    
The effects of bilateral vagotomy at the level of the proventriculus, in immature female fowls (VAG), on body weight, feeding activity parameters, rate of food passage, digestibility, and satiety effects of bombesin (BBS) and cholecystokinin octapeptide (CCK8), were compared with those in sham-operated controls (SHAM). SHAM birds gained weight at a greater rate postoperatively than before their operation, whereas VAG birds did not. Daily food intake did not change significantly as a result of the operation with either SHAM or VAG birds, and the only effect on feeding activity parameters was on the length of intermeal intervals, which increased in VAG birds. Rate of passage of the layers' mash diet was slower, and its apparent digestibility lower, in VAG than in SHAM birds. Short-term suppression of food intake, following intravenous injections of BBS (10 micrograms/kg) or CCK8 (10 micrograms/kg), did not differ between SHAM and VAG birds. The different postoperative weight gains may have been a consequence of different weights of food digested, and the difference in interval length was probably due to the different rates of food passage. The results of these experiments indicate that efferent information affecting rate of passage and digestibility travels via the vagus, but that afferent information concerned with initiation and termination of meals, and with satiety effects of BBS and CCK8, does not. Instead, such afferent information may travel via the intestinal nerve, which is unique to birds.
C J Savory; J P Hodgkiss
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Physiology & behavior     Volume:  33     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  1984 Dec 
Date Detail:
Created Date:  1985-10-24     Completed Date:  1985-10-24     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  937-44     Citation Subset:  IM    
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MeSH Terms
Bombesin / pharmacology*
Digestion / drug effects
Feeding Behavior / drug effects*,  physiology
Peptides / pharmacology*
Satiation / drug effects,  physiology
Sincalide / pharmacology*
Time Factors
Vagus Nerve / physiology*
Reg. No./Substance:
0/Peptides; 25126-32-3/Sincalide; 31362-50-2/Bombesin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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