The aim of the present Study was to evaluate the effects of homeopathic medication containing two nosodes, staphylococcus aureus and streptococcus dysgalactiae in the treatment of subclinical mastitis.Three hundreds dairy cows were selected during the lactation period from one herd with a high somatic cell count (400000 ≤SCC≤1000000 cells/ml) with no signs of clinical mastitis. California mastitis tests (CMT), somatic cell count (SCC) and bacteriological culture (BC) were performed on each sample. All of the cows were assigned in a blind, randomized study, divided into two groups, treatment homeopathic nosodes group (160 cows) and placebo control group (140 cows), with a 5 ml daily amount for a period of 5 days. After treatment initiation, milk samples were taken from each group to determine the SCC and conduct a bacteriological culture. Data from the study was used to compare the two groups of cows on day 0, day 21 and day 28. After treatment, the SCC was significantly lower in the treated group compared with the control group on day 21 and 28, and a significant difference was seen between the BC results in the two groups. The results of the present study showed that the use of a homeopathic nosode for sub-clinical mastitis during the lactation period had a significant effect on treatment and the decreasing incidence of this disease. On the other hand, as there are no residues in the milk, and due to the lower costs involved, it is more economical.
