Dibattista D, Campbell D A
Department of Psychology, Brock University, St. Catharines, Ontario, Canada.
Physiol Behav. 1998 Jun 15;64(4):563-71. doi: 10.1016/s0031-9384(98)00109-7.
Two experiments were performed to examine protein appetite in golden hamsters (Mesocricetus auratus). In Experiment 1, hamsters were maintained for 10 days on either a protein-free or a nutritionally complete maintenance diet, and they were also given access to protein-rich and carbohydrate-rich test diets for 6 h/day. Hamsters maintained on the protein-free diet strongly preferred the protein test diet, but hamsters on the complete diet showed no such preference even when their caloric intake was matched to that of hamsters on the protein-free diet. In Experiment 2, hamsters that had developed a preference for the protein test diet while maintained on the protein-free diet were given Purina Chow for 25 days to permit them to recover from their protein deficiency. When later maintained on the complete diet, these hamsters did not demonstrate a preference for the protein test diet when maintained on the complete diet, but did so when returned to the protein-free maintenance diet. These findings indicate that dietary protein restriction causes hamsters to develop a strong preference for a protein-rich diet and that this preference may be manifested only in response to a physiological need for protein.
进行了两项实验来研究金黄地鼠（Mesocricetus auratus）的蛋白质食欲。在实验1中，将地鼠分别用无蛋白饮食或营养完全的维持饮食喂养10天，并且每天给它们6小时的富含蛋白质和富含碳水化合物的试验饮食。用无蛋白饮食喂养的地鼠强烈偏好蛋白质试验饮食，但食用完全饮食的地鼠即使热量摄入与无蛋白饮食喂养的地鼠相同，也没有表现出这种偏好。在实验2中，在无蛋白饮食喂养期间对蛋白质试验饮食产生偏好的地鼠，给予普瑞纳饲料25天，以使它们从蛋白质缺乏中恢复过来。当后来用完全饮食喂养时，这些地鼠在食用完全饮食时没有表现出对蛋白质试验饮食的偏好，但当恢复到无蛋白维持饮食时则表现出这种偏好。这些发现表明，饮食中的蛋白质限制会使地鼠对富含蛋白质的饮食产生强烈偏好，并且这种偏好可能仅在对蛋白质的生理需求时才会表现出来。
