Department of Anthropology, University of California, Santa Cruz, California 95064, USA.
Am J Primatol. 2010 Jan;72(1):81-6. doi: 10.1002/ajp.20755.
Little is known about the milk composition of nonhuman primates, and it has never been examined in capuchin monkeys (genus Cebus). This article reports on the macronutrient milk composition (fat, crude protein (CP), lactose, dry matter (DM), and total gross energy (GE)) of captive housed tufted capuchins (Cebus apella) (n=8). C. apella milk averaged 5.22% fat, 2.40% CP, 6.94% lactose, 16.48% DM, and 0.89 kcal/g. Fat was the most variable macronutrient and was significantly higher in samples collected after 2 months of lactation. To explore the adaptive significance of C. apella milk composition, results were compared with data on milk composition from a closely related cebid, Saimiri boliviensis boliviensis, and another large-brained anthropoid, Homo sapiens. C. apella milk was only significantly different from Saimiri milk in CP and the proportion of energy from CP. Compared with human milk, C. apella milk was lower in lactose but higher in fat, CP, DM, GE, and the proportion of energy from CP. Results from this small dataset suggest that among anthropoid primates, the macronutrient composition of milk is influenced by phylogeny, may vary relative to infant growth rates, but may not be related in any direct way to relative brain size.
关于非人类灵长类动物的乳汁成分知之甚少，而关于绒毛猴（属 Cebus）的乳汁成分从未被研究过。本文报道了圈养的卷尾猴（Cebus apella）（n=8）的宏量营养素奶成分（脂肪、粗蛋白 (CP)、乳糖、干物质 (DM) 和总总能量 (GE)）。C. apella 奶的平均脂肪含量为 5.22%，CP 含量为 2.40%，乳糖含量为 6.94%，DM 含量为 16.48%，GE 含量为 0.89 千卡/克。脂肪是最易变的宏量营养素，在哺乳期后 2 个月采集的样本中显著更高。为了探索 C. apella 奶成分的适应意义，将结果与来自密切相关的绒毛猴属 Saimiri boliviensis boliviensis 和另一种大脑猿类人类的奶成分数据进行了比较。C. apella 奶仅在 CP 和 CP 提供的能量比例上与 Saimiri 奶有显著差异。与人类奶相比，C. apella 奶的乳糖含量较低，但脂肪、CP、DM、GE 和 CP 提供的能量比例较高。这个小数据集的结果表明，在灵长类动物中，乳汁的宏量营养素组成受亲缘关系的影响，可能相对于婴儿的生长速度而变化，但与相对大脑大小没有直接关系。
