犊牛链球菌性肺炎的诊断与防治

Diagnosis and prevention of streptococcus pneumonia in calves

为了查明引起某规模化牧场犊牛发病的病原,试验采用流行病学调查的方法并结合实验室病原学检测方法对犊牛发病情况、临床症状、饲养管理等情况进行调查,对病原菌进行分离培养鉴定及药敏试验。结果表明:该病发病较急、传播速度快、没有明显的季节性。分别从11份发病犊牛样品和2份同群健康犊牛样品中分离出链球菌,发病犊牛的检出率为100%,未发病犊牛检出率为20%。分离菌对头孢噻吩和多西环素高度敏感。通过使用这2种药物及静脉补糖、维生素C治疗,发热犊牛给予解热药,经过一周治疗后逐渐康复。

In order to identify the pathogens that cause calf disease on a large-scale pasture,the experiment used an epidemiological investigation method combined with laboratory pathogenic detection methods to investigate the calf morbidity,clinical symptoms,feeding management,etc.,and isolate the pathogens culture identification and drug sensitivity test.The test results showed that the disease was more acute and spreads quickly,without obvious seasonality.Streptococcus was isolated from 11 samples of diseased calves and two samples of healthy calves from the same group.The detection rate of diseased calves was 100%,and the detection rate of unaffected calves was 20%.The isolates were highly sensitive to cephalosporin were doxycycline.Through the use of these two drugs,intravenous sugar rehydration and vitamin C treatment,fever calves were given antipyretics and gradually recovered after a week of treatment.