| theileriosis of sheep and goats in china. | theileriosis is an important disease of sheep and goats in west china. its main distribution includes qinghai, gansu, ningxia, inner mongolia, shaanxi and sichuan. the epidemic period is from late march to july with april-may being the peak months. this is the period of most intensive tick attack by haemaphysalis qinghaiensis (77.2-99.24%) during the year. it has been proved that the nymphs and adults, which develop from larvae and nymphs engorged on infected sheep or goats can transmit the path ... | 1997 | 9512737 |
| isolation and preliminary characterization of a large babesia sp. from sheep and goats in the eastern part of gansu province, china. | two species of babesia were isolated from naturally infected sheep in the eastern part of gansu province. one of the species was identified as b. ovis, while the another one seems as yet to be an unidentified babesia species. the latter could be transmitted transovarially by haemaphysalis longicornis. it was shown that larvae and nymphs transmit the organism to sheep and goats with a prepatent period of 5-28 days. as the carrier period of b. ovis is longer than that of the larger species and the ... | 2002 | 12051600 |
| epidemiology of ovine theileriosis in ganan region, gansu province, china. | the epidemiology of ovine theilreiosis in gannan tibet autonomous region was investigated. the results of these studies indicate that this disease is endemic in the following counties of gannan where the vector tick was identified as haemaphysalis qighaiensis: luqu, xiahe, hezuo, zhuoni, lintan, diebu, maqu. the disease mainly occurred from march to may and some cases also occurred in september and october. the incidence rates in lambs of sheep brought from areas free of the disease were high. o ... | 2002 | 12051605 |