| cryptosporidium parvum (eucoccidiorida: cryptosporiidae) in calves: results of a longitudinal study in a dairy farm in sfax, tunisia. | a longitudinal study was undertaken to determine the prevalence of cryptosporidium in a dairy farm in sfax, tunisia. 480 faecal samples were obtained from 30 calves under one month of age. all faecal samples were analysed for cryptosporidium oocysts by microscopic examination of smears stained by modified ziehl neelsen technique. the parasite was detected in 26 calves (86.7%). infection was significantly associated with diarrhoea. a molecular characterization, performed in seven calves, confirme ... | 2007 | 18225419 |
| total and differential bulk cow milk somatic cell counts and their relation with antioxidant factors. | in the present study, the relationship between total bulk milk somatic cell counts (bmscc), differential bmscc (macrophage, lymphocyte, and polymorphonuclear leukocytes), and antioxidant enzymes was investigated. forty-three samples of bulk milk were selected randomly from eight dairy farms in the region of sfax (tunisia) in winter, from november 2005 to february 2006. bulk milk samples were analyzed for antioxidant enzymes such as catalase, sod and gshpx activity and differential scc. after tha ... | 2008 | 18241807 |