A sero-epidemiological survey of blood parasites in cattle in the north-eastern Free State, South Africa.
A sero-epidemiological survey of blood parasites in cattle in the north-eastern Free State, South Africa.
复制标题
对南非自由州东北部牛的血液寄生虫进行的血清流行病学调查。
DOI：
10.4102/ojvr.v71i1.287
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发表时间：
2004
影响因子：
2.7
通讯作者：
P. Mbati
中科院分区：
文献类型：
--
作者：
M. S. Mtshali;D. T. de Waal;P. Mbati
1999年8月至2000年7月在自由州东北部进行了一项调查，以确定牛（n = 386）寄生虫的发病率。吉姆萨染色的血涂片对血液寄生虫呈阴性。通过间接荧光抗体试验，共有94%的牛对二联巴伯螨呈血清阳性，而通过酶联免疫吸附试验，87%的牛对无形体属呈血清阳性。同一群牛的血涂片阴性，但血清学无形体和巴氏杆菌阳性结果的发生率很高，这表明该地区是这些疾病的地方病，但病情稳定。所有动物均为B血清阴性。牛，这可能是因为传播该疾病的蜱媒介（微小牛蜱）在自由州省不存在。在牛身上发现了两种属于硬蜱科的蜱种，即脱色牛蜱和外翻扇头蜱。在本研究中，B的季节性负担存在显着差异。在2010年，有记录显示，在2月至6月期间，有最高的感染率。R.观察到一年四季的evertsi evertsi没有任何波动或在冬季有小的波动，2月至5月达到高峰。
A survey to determine the incidence of parasites in cattle (n = 386) was conducted in the north eastern Free State between August 1999 and July 2000. Giemsa-stained blood smears were negative for blood parasites. A total of 94% of the cattle were sero-positive for Babesia bigemina by indirect fluorescent antibody test while 87% were sero-positive for Anaplasma by enzyme-linked immunosorbent assay. The observation of negative blood smears but high incidence of positive serological results for Anaplasma and Babesia for the same group of cattle indicates that this area is endemic for these diseases but with a stable disease situation. All the animals were sero-negative for B. bovis and this is probably because the tick vector (Boophilus microplus) which transmits the disease is not present in the Free State Province. Two tick species belonging to the family ixodidae were found on cattle, namely Boophilus decoloratus and Rhipicephalus evertsi evertsi. In the present study significant differences in seasonal burdens of B. decoloratus occurred, with the highest infestations recorded from February to June. The presence of R. evertsi evertsi throughout the year without any or with small fluctuations in winter months was observed, with a peak from February to May.