Infusions of the following hormones were made into the hepatic vein of sheep over
periods of three hours: pentagastrin (2.1, 5.0 or 9.9 μg/kg), pancreozymin (1.0 units/kg),
secretin (2.0 units/kg), insulin (2.1 or 4.3 units/kg). Intake of the concentrate
food was depressed by pentagastrin at 9.9 μg/kg/3 hr (P < 0.05) and increased by insulin
at 4.3 units/kg/3 hr (P < 0.05). Insulin levels in jugular plasma were unaffected
by any of the gut hormone infusions. The liver is suggested as being involved in the
control of food intake in sheep.
Portal Infusions
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Gastro-Intestinal Hormones
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Insulin
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Food Intake
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Sheep
