The possibility of using non-metric (point) system in the clinical diagnosis of infectious diseases of the gastrointestinal tract in calves

Abstract

We are offering the mathematic nornmetric point system for evaluation pathological process with dyspepsia of the calves. The evaluation system was tested in terms of scientific and practical experience on a limited population of young cattle (n = 40), their the age is 1-5 days. It's showed that in calves with a total score of 11-12 points (relatively healthy), the qualitative characteristics of the feces correspond to the normal physiological state: the consistency is pasty, the color is light brown, inclusions and pathological odor are absent. Representatives of Lactobacillus, Bifidobacterium, E. coli (99.09%) dominate in the microbial landscape of the large intestine. The total amount of pathogenic microorganisms (Staphilococcus, Enterococcus, Streptococcus) is less than 1%. In calves (7.5%) with a total score of 8-10 points, the quality indicators of feces had minimal changes. The relative amount of Lactobacillus, Bifidobacterium, E. coli was 81.4% of the total number of microorganisms. The number of Staphilococcus, Enterococcus increased to 103 CFU / g. Growth of Streptococcus, Proteus, hemolytic E. Coli to 8.5% is noted. In calves with acute intestinal disorders (total score 5-7 points), significant changes in the quality indicators of feces were noted: liquid consistency, color changes to yellow, putrid odor, inclusions in the form of mucus, blood or gas bubbles. The relative number of normal flora decreased to 66.57% (Lactobacillus, Bifidobacterium, E. coli). The growth of pathogenic microflora continued to increase: Staphilococcus, Enterococcus, Streptococcus - up to 103 CFU / g; hemolytic E. coli - up to 109 CFU / g. In the antigen composition of the pathogens identified the rotavirus and the coronavirus.