One of the differences Rizzo discovered between the groups was age. Vegetarians, on average, were 3 years older than the meat-eaters.
里索发现其中差异之一是这些群体之间的年龄，素食者平均是比肉食者大3岁。
The main results showed as follows: Trial one: 30-day age, 15 birds male small-fat-tail sheep according to body equal completely randomized design, were divided into 3 groups each with 5.
详细结果如下：试验一：采用随机分组对照试验设计，选用体重基本一致的30日龄小尾寒羊公羊15只，随机分成3个处理，每个处理5只。
The chickens in both groups were killed at 3 months of age.
于三个月的时候处死所有的鸡。
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