Peters and Harper (1985)
Male King rats were fed diets
with varying levels of protein (5-75%) for 11 days. Food intake
and weight gain was greatest on diets with protein contents of 20-35%.
Peters and Harper (1987)
Fatd were fed diets of 0-55%
Liddle et al (1986)
Rats were fed diets of different
macronutrient composition by intragastric injection to determine
the response of CCK, a hormone secreted by the gut that promotes
satiety.. Intact protein, but not amino acids, were the only nutrient
to promote CCK release.
Krauss and Mayer (1965)
Female rats were fed diets
of 20-90% protein for 5 days, and found that food intake was depressed
by high levels of protein.
Hannah, Duby, and Hansen
With 4 adult Rhesus monkeys,
calorie intake was lower on a 50% protein compared to a 14% protein
diet over four weeks.
Animal studies examining
the effect of dietary protein on satiety and weight loss yield conflicting