They were feeding adult maintenance kibble that contained about 300 mg calcium per 100 kcals or less, and they were not supplementing with calcium in any way, shape or form.

• 他们喂食的都是成犬粮，其中的钙含量为小于等于300毫克/100千卡，而且他们也不进行任何形式（药剂或食物的方式）的补钙。