A total of 12 litters of neonatal piglets were randomly divided into four groups, two groups with creep feed and the other two without as the controls.

• 将12窝仔猪随机分为4组，即在饲喂与不饲喂开食料2种饲养制度下，分别设饲喂乳酸菌剂组和饲喂脱脂乳的对照组，每组3个重复。