The Effect of a Low Environmental Temperature on the Weight and Food Consumption of Riboflavin-Deficient Rats

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Abstract
Weight changes and food intakes were measured in rats kept at two environmental temperatures and receiving adequate and suboptimal levels of riboflavin in the diet. There were no significant differences in weight loss or gain between the rats held at 25°C and 5°C when the level of riboflavin was 2.0 µg/gm food or less. Data obtained on the food intake of these animals suggest that the growth response to various levels of riboflavin is a function of both appetite and efficiency of food utilization and that the cold-induced intake increment remains constant at all levels of riboflavin intake.