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首页> 外文期刊>Journal of Animal Science Advances >Principal Germs Causing Clinical Mastitis in Dairy Cattle Farms in Governorate of Blida (Algeria)
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Principal Germs Causing Clinical Mastitis in Dairy Cattle Farms in Governorate of Blida (Algeria)

机译：在卜利达省（阿尔及利亚）的奶牛场中引起临床乳腺炎的主要细菌

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This study focused on characterizing the germs causing the intra-mammary infections in the dairy farms of governorate of Blida (Algeria), by making use of the Speed Mam Test as screening method and conventional bacteriological methods. Out of 78 milk samples originating from quarters with clinical mastitis, we obtained 06 negative cultures (7.69%) and 72 positive cultures distributed in pure cultures (64 or 82.05%) and mixed cultures (08 or 10.25%, of which 7 described 2 germs and 1 was considered contaminated as it described 3 germs). The characterization of the 81 isolated strains revealed the prevalence of the Enterobacteria (25.93%) with high proportion of Escherichia coli (12.34%), followed by Coagulase-Negative Staphylococci (CNS; 20.99%) and Coagulase Positive Staphylococci (CPS; 19.75%), in this case occurring a reversal of the staphylococci prevalence trend (CNS vs CPS) in intra-mammary infections. Streptococci are present at a rate of 9.88% and are being represented by Str. uberis and Str. dysgalactiae. There have also been isolated Enterococcus faecium and Pseudomonas sp. Of all isolated strains, 12 (14.81%) have not been identified, as they did not belong to the researched families and genders. The interpretation of the results as per reservoir type show that the percentage of germs located in the environmental reservoir (Escherichia coli, Klebsiella ornithinolytica; odorifera Serratia, Proteus and Aeromonas hydrophila, Str. Uberis and Enterococcus faecium; 39.49%) is twice as big as opposed to those germs located in the mammary gland reservoir (S. aureus and Str. dysgalactiae; 20.98%). The health condition of the udder at the level of the explored dairy farms point out the prevalence of the clinical mastitis caused by environmental factors over the mammary reservoir (particularly, S. aureus).
机译：这项研究的重点是通过使用Speed Mam试验作为筛查方法和常规细菌学方法，对在Blida（阿尔及利亚）省的奶牛场引起乳内感染的细菌进行鉴定。在源自临床乳腺炎的四分之一的78个牛奶样品中，我们获得了06个阴性培养物（7.69％）和72个阳性培养物分布在纯培养物（64或82.05％）和混合培养物中（08或10.25％），其中7个描述了2种细菌其中1个因描述3个细菌而被视为受污染）。对这81株分离菌株的鉴定表明，高比例大肠杆菌（12.34％）的肠杆菌患病率（25.93％），其次是凝固酶阴性葡萄球菌（CNS; 20.99％）和凝固酶阳性葡萄球菌（CPS; 19.75％）。 ，在这种情况下，乳房内感染的葡萄球菌流行趋势（CNS vs CPS）发生了逆转。链球菌的比率为9.88％，以Str代表。厄贝里斯和海峡。乳汁异常还分离了粪肠球菌和假单胞菌sp。在所有分离出的菌株中，有12株（14.81％）尚未鉴定，因为它们不属于所研究的家庭和性别。根据储层类型对结果的解释表明，位于环境储层中的细菌（大肠埃希氏菌，克雷伯菌，解毒克雷伯氏菌，嗜水杆菌，变形杆菌和嗜水气单胞菌，Uberis和粪肠球菌; 39.49％）的百分比是其两倍。与位于乳腺水库中的细菌相反（金黄色葡萄球菌和反乳链球菌; 20.98％）。在探索的奶牛场水平上，乳房的健康状况指出了由环境因素引起的临床乳腺炎的流行（尤其是金黄色葡萄球菌）。

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