[The regional differences of the pH-value in the vagina, cervix, and uterus of cows during interestrus].

This study aimed to ascertain the pH value of the vagina, cervix, and uterus in cows during interoestrus. Measurements were made with an ambulant, digital pH meter with a flexible probe and a measuring frequency of one value per second. The genital tract (vagina, cervix, uterus) of 50 cows were analyzed with this instrument immediately post mortem. The sexual health of the animals was evaluated via clinical, histological, and microbiological tests. Statistically significant regional differences in the pH value were documented (p < 0.01). Whereas a decrease was measured between the values for the vagina (6.92 +/- 0.51) and the cervix (6.22 +/- 0.31), increased values were measured in the uterus (6.62 +/- 0.32). The physiological pH value in the genital tract of the cow should be taken into consideration for the development of new therapeutic measures in terms of the local application of probiotically active bacterial strains.