Bairlein F
Comp Biochem Physiol A Comp Physiol. 1987;86(2):337-47. doi: 10.1016/0300-9629(87)90340-9.
Intake of food, protein, fat and carbohydrates and their fecal output and the birds' weights were recorded during different feeding trials with specific nutrient reduced diets in the old-world long-distance migratory garden warbler. The birds' body weights were affected by low dietary protein as well as low dietary fat levels. Low dietary protein and fat levels were associated with significant changes in daily gross and net food intake and in the efficiency of food and nutrient utilization. Birds fed on diets with low nutrient levels for an extended length of time recovered in weight after an initial weight loss. They obviously compensated the restricted nutrient levels primarily by increasing the daily food intake and by changing the efficiency of food and nutrient utilization. Effects of restricted dietary nutrient levels on body weight and adaptation depended on the previous composition of the food. The average daily net fat intake was much higher than the average daily net protein intake, both for maintenance of a constant body weight and for successful regain of weight. The data were further discussed with respect to the role of a fruit diet in omnivorous passerine birds.
在对旧大陆长途迁徙的花园莺进行的不同喂养试验中，记录了特定营养素减少饮食情况下的食物、蛋白质、脂肪和碳水化合物摄入量及其粪便排出量以及鸟类体重。鸟类体重受到低蛋白饮食以及低脂肪饮食水平的影响。低蛋白和低脂肪饮食水平与每日总食物摄入量和净食物摄入量以及食物和营养物质利用效率的显著变化有关。长时间喂食低营养水平日粮的鸟类在体重最初下降后体重有所恢复。它们显然主要通过增加每日食物摄入量以及改变食物和营养物质的利用效率来补偿受限的营养水平。受限饮食营养水平对体重和适应性的影响取决于先前的食物组成。无论是维持恒定体重还是成功恢复体重，每日平均净脂肪摄入量都远高于每日平均净蛋白质摄入量。针对水果饮食在杂食性雀形目鸟类中的作用对数据进行了进一步讨论。
