Murphey R M, Bahre C J, Penedo M C, Webster G L
Behav Genet. 1981 Jul;11(4):385-94. doi: 10.1007/BF01070821.
Feces from three racial categories of cattle being raised together in degraded, desertic-thorn forest environment in northwestern Mexico were compared for plant epidermal cell content. There were statistically significant group differences for approximately one-third of the plant material found in the feces. The proportional fecal differences between racial categories were similar to those found previously for B-system blood types. The feces of Bos taurus-like cattle contained a greater variety of plants than did those of B indicus-like animals. The findings have implications for studies of behavioral evolution, the effects of cattle on ecology, and cattle husbandry.
在墨西哥西北部退化的荒漠荆棘林环境中共同饲养的三个种族类别的牛的粪便，就植物表皮细胞含量进行了比较。粪便中约三分之一的植物材料存在统计学上显著的组间差异。种族类别之间粪便的比例差异与先前在B系统血型中发现的差异相似。瘤牛类牛的粪便比印度瘤牛类动物的粪便含有更多种类的植物。这些发现对行为进化研究、牛对生态的影响以及畜牧业具有启示意义。
