Chopra S L, Blackwood A C, Dale D G
Can J Comp Med Vet Sci. 1963 Dec;27(12):290-4.
Studies were conducted on the enumeration of 7 groups of fecal microflora including total aerobes, total anaerobes, coliforms, lactobacilli, staphylococci, streptococci and yeasts and molds of 18-day old piglets. These pigs were early weaned (21 days) on different modifications of an early-weaning ration. The above mentioned microflora were enumerated again when some of the pigs in a replicate started scouring. The occurrence of diarrhea was always associated with significant increases in the numbers of coliforms and corresponding decreases in the lactobacilli counts. No other single group of fecal microflora differed in the scouring and non-scouring animals. The composition of the early-weaning ration offered to the animals did not, in itself, influence the fecal microflora to any appreciable extent. In another series of experiments, enumeration of coliforms and lactobacilli was conducted on samples obtained from different segments of the intestinal tracts of scouring and non-scouring pigs. Increased numbers of coliforms and decreased numbers of lactobacilli were observed at all levels of the intestinal tracts of the scouring animals. However, these changes were more marked in the duodenal samples than in those obtained from other parts of the intestine.
对18日龄仔猪的7组粪便微生物区系进行了计数研究，包括需氧菌总数、厌氧菌总数、大肠菌群、乳酸菌、葡萄球菌、链球菌以及酵母菌和霉菌。这些仔猪在21日龄时进行早期断奶，并采用不同改良的早期断奶日粮。当重复组中的一些仔猪开始腹泻时，再次对上述微生物区系进行计数。腹泻的发生总是与大肠菌群数量显著增加以及乳酸菌数量相应减少有关。在腹泻和未腹泻的动物中，没有其他单一粪便微生物菌群存在差异。提供给动物的早期断奶日粮组成本身并未对粪便微生物区系产生任何明显影响。在另一系列实验中，对腹泻和未腹泻仔猪肠道不同部位采集的样本进行了大肠菌群和乳酸菌计数。在腹泻动物的肠道各部位均观察到大肠菌群数量增加和乳酸菌数量减少。然而，这些变化在十二指肠样本中比在肠道其他部位的样本中更为明显。
