The hepatic portal system is the system of veins comprising the hepatic portal vein and its tributaries. The liver consumes about 20% of total body oxygen when at rest, so the total liver blood flow is quite high. Blood flow to the liver is unique in that it receives both oxygenated and partially deoxygenated blood.
Mini-Aussie Ideal Weight. I have a 3 year old female Miniature Aussie and she currently weighs 30 pounds. She gets moderate exercise (2 mile brisk walk each morning; chasing rabbits, birds, etc around a 1 acre yard).
An average male collie weighs between 60 to 75 pounds and stands 26 inches at the shoulder. The female collie weighs from 50 to 60 pounds and is 22 to 24 inches at the shoulder. The sheltie runs from 13 to 16 inches tall at shoulder height and weighs from 20 to 25 pounds. The collie muzzle is longer than that of a sheltie. Both the rough collie and the sheltie carry a full, lush outer coat over a thick undercoat.