Association of endometritis and ovarian follicular cyst with mastitis indairy cows

摘要

The occurrence of multiple metabolic and inflammatory diseases in dairy cows is higherduring the periparturient period, which may be triggered by bacterial components, but nota viable bacterium. This study aimed to determine the association of endometritis andovarian follicular cyst (OFC) with mastitis in dairy cows. Ninety-eight Holstein dairycows were clinically examined for endometritis and OFC approximately 30–50 days aftercalving. Blood and milk samples were collected for the determination of milk somatic cellcount (SCC); milk interleukin-1β (IL-1β), tumor necrosis factor-α (TNFα), andinterleukin-8 (IL-8) concentrations; and plasma haptoglobin (Hp) andlipopolysaccharide-binding protein (LBP) concentrations. Of the 98 dairy cows included inthis study, 12 were diagnosed with endometritis and 37 cows were identified asOFC-positive, whereas the remaining 49 cows were healthy (without endometritis or OFC).The average and maximum SCCs and plasma Hp and LBP concentrations were not significantlydifferent between the healthy cows and those with endometritis or OFC. However, when themaximum SCC was classified as <300, 300–1,000, or >1,000 × 103 cells/ml,the percentage of cows with the maximum SCC <300 × 103 cells/ml wassignificantly lower in the endometritis and OFC-positive groups than in the healthy group.These results suggested that cows with endometritis and OFC during the postpartum periodexhibit high SCC, indicating that some bacterial components can be transferred betweenorgans.