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北京地区奶牛乳房炎的流行状况调查

发表时间:2010-06-15  浏览量:1835  下载量:722
全部作者: 高健,刘修权,陈立本,史为民,苏敬良,韩博
作者单位: 中国农业大学动物医学院
摘 要: 旨在调查北京奶牛日均产奶量及月均体细胞数的变化情况,以及隐性乳房炎和临床乳房炎的发病及金黄色葡萄球菌引起乳房炎的发病情况。自2008年10月至2009年9月,随机采集北京郊区某牛场肉眼观察正常的奶样720份,用C-Reader计数仪检测奶样的体细胞数,同时分离奶样中的金黄色葡萄球菌。调查表明:1年时间,某牛场共收集到82份隐性乳房炎奶样和75份临床乳房炎奶样。其中,金黄色葡萄球菌感染的乳房炎奶样数分别为31份和25份;凝固酶阴性葡萄球菌、大肠杆菌、肺炎克雷伯氏菌、伤寒沙门氏菌、枯草芽孢杆菌感染的乳房炎奶样数总共为78份;细菌培养为阴性的奶样数23份。根据体细胞计数和细菌培养结果可以判断:月份对隐性和临床乳房炎的发生均有明显的影响(6~8月份乳房炎发生率明显较1,2月份高);而对金黄色葡萄球菌引起的乳房炎发生影响相对较小。金黄色葡萄球菌引起的隐性乳房炎和临床乳房炎发病比例均较高,分别为37.8%和33.3%.
关 键 词: 兽医学;牛乳房炎;金黄色葡萄球菌;发病率;月份
Title: Epidemiological survey about prevalence of bovine mastitis in Beijing region
Author: GAO Jian, LIU Xiuquan, CHEN Liben, SHI Weimin, SU Jingliang, HAN Bo
Organization: College of Veterinary Medicine, China Agricultural University
Abstract: The objective of the present study is to investigate the variance of mean daily milk yield and mean monthly somatic cell count of lactating cows, as well as the incidence rate of sub-clinical and clinical mastitis, and prevalence of Staphylococcus aureus mastitis. 720 visually normal milk samples were random collected during 12 month (2008.10~2009.9) on the farm of suburban district in Beijing. Somatic cell counts of samples were examined by C-Reader calculatinginstrument and S. aureus isolation was performed from milk samples. During a year, 82 sub-clinical milk samples and 75 clinical milk samples were determined. 31 sub-clinical samples and 25 clinical samples were infected by S. aureus. 78 samples were infected by several other species including coagulase negative Staphylococcus, Escherichia coli, Klebsiella spp, Salmonella spp and Bacillus spp. 23 samples were determined as no bacteria growing. Result of this study showed that the impact of month is apparent for total incidence rates of sub-clinical and clinical mastitis (from June to August, the incidence rate is apparently higher than that from January to Februar), but not so apparent for S. aureus mastitis. The prevalence of S. aureus in sub-clinical and clinical mastitis are both high (37.8% and 33.3%, respectively).
Key words: veterinary medicine; bovine mastitis; Staphylococcus aureus; incidence rate; month
发表期数: 2010年6月第11期
引用格式: 高健,刘修权,陈立本,等. 北京地区奶牛乳房炎的流行状况调查[J]. 中国科技论文在线精品论文,2010,3(11):1180-1185.
 
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