Effect of vasoactive intestinal polypeptide and environmental temperature on forestomach electromyographic activity and gastrointestinal contraction in sheep

Autor:	B. T. Li, R. J. Christopherson, E. K. Okine
Rok vydání:	2000
Předmět:	medicine.medical_specialty Omasum medicine.medical_treatment Stomach Vasoactive intestinal peptide Ileum Biology Rumen medicine.anatomical_structure Endocrinology Food Animals Internal medicine Duodenum medicine Animal Science and Zoology Saline Reticulum
Zdroj:	Canadian Journal of Animal Science. 80:343-353
ISSN:	1918-1825 0008-3984
DOI:	10.4141/a99-073
Popis:	Four crossover design experiments were conducted with sheep to test the hypothesis that vasoactive intestinal polypeptide (VIP) affects gastrointestinal motility with implications for digesta flow. Sheep were shorn and surgically prepared with electrodes implanted on the forestomach, cannulae in the rumen, duodenum or/and ilieum, and a left gastric artery catheter. VIP (1 or 1.5 nmol min−1) or saline (control) was infused for 10 min at half-hour or hour intervals for 4 or 7 d during treatment periods. VIP transiently inhibited electromyographic (EMG) activity of the reticulum, reticulo-omasal orifice (ROO) and omasum for 3 to 8 min during the 10-min infusion periods. VIP infusion extended the duration of ROO opening (P
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7a9a1869a7e32794b73ccac11fbd71f6 https://doi.org/10.4141/a99-073 Zobrazit plný text záznamu