Etiology Research And Analysis Of Eliminated Dairy Cow

In dairy cattle industry, moderately and promptly eliminatation the lower milk-productive and reproductive performance cows can reduce the production cost and improve the economic benefits. But if excessive, it could decrease the number of breeding cows and production calfs, and then reduce the economic benefits. In domestic and foreign dairy cattle industry, the main reason of indeliberately eliminating cows is milk-productive and reproductive dysfunction. Milk productive dysfunction is mainly caused by cow mastitis, while reproductive dysfunction mainly caused by chronic endometriosis and ovarian disease. Observation of breast and reproductive organs in eliminated dairy cow by pathology histology has great significance for diagnosis, prevention and control; Analyzes the etiology and pathogenesis of the disease, especially the disease factors result in eliminatation, benefit for reducing the indeliberate elimination proportion.In addition, it is great important for obstinate mastitis diagnosis therapy, and reducing antibiotic misuse, by isolation and biochemical test of mastitis yeast which antibiotic treatment was invalid.In this study, we pathomorphology inspected200breast zones of50eliminated dairy cows in Taian, and further observed the whole genital system(ovaries, oviduct, uterus) pathological changes. We chose12head suspected yeas mastitis cases of48milk cow area contentsfor identification and anti-yeast drug sensitive test. Test results:In50eliminated dairy cow cases, there are32heads with apparente mastitis eye view lesions.The mainly symptoms were chronic inflammation, purulent inflammation, catarrhal inflammation, and fibrinous inflammation. By histopathological observation,47heads had apparente mastitis lesions. Only68%suspected mastitis case had the histopathological mastitis lesions. Except chronic mastitis and purulent inflammation, the catarrhal inflammation, serous inflammation, and fibrinous inflammation’s confirmed diagnosis were difficult by eye view detections. The mastitis histopathology detection rate was82%lesions (164breast zones), and the main pathological change including proliferative mastitis(32.5%), suppurative mastitis (20%), and catarrhus mastitis (11%). In50eliminated dairy cow cases, there were two dairy follicular cysts cases, one ovarian cyst corpus luteum case, two shrunken oaries cases. The oophoropathy detection rate was10%.21cases had endometritis lesions, detection rate as high as42%. The majority lesions(22%) were womb chronic inflammation (chronic catarrhus endometritis, chronic endometritis), chronic pus temperament palace meningitis, chronic proliferative endometritis). In this study,15yeast strains were separated from12head cows suspected case, which included6candida albicans strains,3g soft’s strains,3Candida cryptococcus neoformans plants,2tropical monilia strains, and1knit fall monilia strain. The drug sensitive test indicates that yeast fungus have complete resistance to the commonly used antibiotics, but a certain degree sensitivity to some against fungi drugs, like fungicidin, Ketoconazole, fluconazole, and clotrimazole. In vitro, Ketoconazole has the best antimicrobial effect by the overall evaluation.