The use of Spratt’s dog cakes is well documented in the diaries and reminiscences of many early Antarctic expedition members. Commercially produced dog food was promoted by the likes of Spratt’s as an advanced form of animal nutrition and would have been of interest to expedition planners who were already concerned with the nutritional requirements of expedition members. An approximately 100-year-old dog cake recovered from Antarctica was compared by chemical analysis and spectroscopic methods with a series of model dog cakes and a commercial dog biscuit to determine the composition and calorific content. The presence of bone fragments within the dog cake was confirmed, whereas starch in the bulk matrix of the sample was consistent with being a mixture of wheat and oat flour, while only minimal fat or oil was present. Calorific content, while insufficient compared to a modern feed for high-performance dogs, would nonetheless have been a valuable addition to the use of dried or frozen whole meat such as seal, fish, or pemmican and contributed additional energy compared to meat alone.

中文翻译：

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喂养团队：分析来自南极洲的斯普拉特狗蛋糕

斯普拉特的狗饼的使用在许多早期南极探险队成员的日记和回忆中都有很好的记载。商业化生产的狗粮被斯普拉特之类的公司推广为一种先进的动物营养形式，并且已经引起了已经关注探险成员营养需求的探险计划者的兴趣。用化学分析法和光谱法对从南极洲回收的约 100 年历史的狗饼与一系列模型狗饼和商业狗饼干进行比较，以确定成分和热量含量。确认了狗饼中存在骨头碎片，而样品的大块基质中的淀粉与小麦和燕麦粉的混合物一致，而仅存在极少的脂肪或油。热量含量，