FAT APPETITE IN RATS - THE RESPONSE OF INFANT AND ADULT-RATS TO NUTRITIVE AND NONNUTRITIVE OIL-EMULSIONS
FAT APPETITE IN RATS - THE RESPONSE OF INFANT AND ADULT-RATS TO NUTRITIVE AND NONNUTRITIVE OIL-EMULSIONS
复制标题
DOI：
10.1016/0195-6663(90)90018-4
复制
发表时间：
1990-12-01
期刊：
影响因子：
5.4
通讯作者：
SCLAFANI, A
中科院分区：
文献类型：
--
作者：
ACKROFF, K;VIGORITO, M;SCLAFANI, A
用玉米油和矿物油乳剂研究了大鼠的脂肪食欲。在实验1中，测定了6-15日龄大鼠口服输液后的摄食反应。到12-15日龄时，幼崽对油乳剂(10%和30%)的反应比对水或乳化剂溶液的反应更大。玉米和矿物油乳剂几乎和牛奶一样有效，但在刺激摄入方面不如蔗糖(0.3M)。实验2和实验3测试了成年大鼠对油乳剂的接受和偏好。通过3分钟和30分钟的一瓶测试，玉米油和矿物油乳剂对未被剥夺的大鼠同样可以接受。食物匮乏增加了两种乳剂的一瓶摄入量。在两瓶测试中，大鼠在没有被剥夺食物时表现出轻微的玉米油偏好，但在被剥夺食物时表现出强烈的偏好。综上所述，这些结果表明，大鼠对乳化油的味觉特性有一种不知不觉的吸引力，它们基于玉米油的摄食后营养作用而学会了更喜欢玉米油。
Fat appetite was studied in rats using corn oil and mineral oil emulstions. In Experiment 1 ingestive responses to intraoral infusions were measured in rat pups 6-15 days of age. By 12-15 days of age pups responded more to oil emulsions (10% and 30%) than they did to water or emulsifier solution. The corn and mineral oil emulsions were almost as effective as milk but less effective than sucrose (0.3 M) in stimulating ingestion. Experiments 2 and 3 examined the acceptance and preference for oil emulsions in adult rats. The corn oil and mineral oil emulsions were equally acceptable to non-deprived rats, as measured by 3-min and 30-min one-bottle tests. Food deprivation increased the one-bottle intake of both emulsions. In two-bottles tests, rats displayed a slight corn oil preference when non-deprived, but developed a strong preference when food deprived. Taken together, the results suggest that rats have an unlearned attraction to the orosensory qualities of emulsified oils and they learn to prefer corn oil based on its postingestive nutritive effects.