PDF(Pubmed)
Abstract：
UNASSIGNED: Milk, a nutritious food, is widely consumed in human diets; however, contamination by micro-organisms can negatively impact its quality and consumer health. Contamination by micro-organisms affects the quality of milk, which can affect the quality of the milk production chain. This study aimed to determine the changes in milk composition and antibiotic susceptibility related to bacteria isolated from dairy cow milk.
UNASSIGNED: Raw milk samples were collected from 72 dairy cows. All milk samples were subjected to the California Mastitis Test (CMT) for CMT score determination. We also investigated milk composition, bacterial culture (BC), and antibiotic susceptibility.
UNASSIGNED: About 47.22% and 30.56% of dairy cattle were positive for CMT + BC and automatic somatic cell count (ASCC) + BC, respectively. Fecal appearance and animal age were found to be risk factors for ASCC + BC positivity in dairy cattle. Bacteria were found in approximately 76% of milk samples, with the most common isolated species being α-hemolytic Streptococcus spp., coagulase-negative Staphylococcus spp., and Escherichia coli. Of these, 70% are resistant to at least one antibiotic. Variation in the multidrug resistance pattern was high in Klebsiella spp.
UNASSIGNED: Fecal appearance and animal age are risk factors for ASCC + BC positivity in dairy cattle. This study identified antibiotic and multidrug resistance patterns, which require comprehensive studies and effective surveillance systems. Remarkably, the use of antibiotic therapy in dairy cattle should be monitored.
UNASSIGNED: Raw milk samples were collected from 72 dairy cows. All milk samples were subjected to the California Mastitis Test (CMT) for CMT score determination. We also investigated milk composition, bacterial culture (BC), and antibiotic susceptibility.
UNASSIGNED: About 47.22% and 30.56% of dairy cattle were positive for CMT + BC and automatic somatic cell count (ASCC) + BC, respectively. Fecal appearance and animal age were found to be risk factors for ASCC + BC positivity in dairy cattle. Bacteria were found in approximately 76% of milk samples, with the most common isolated species being α-hemolytic Streptococcus spp., coagulase-negative Staphylococcus spp., and Escherichia coli. Of these, 70% are resistant to at least one antibiotic. Variation in the multidrug resistance pattern was high in Klebsiella spp.
UNASSIGNED: Fecal appearance and animal age are risk factors for ASCC + BC positivity in dairy cattle. This study identified antibiotic and multidrug resistance patterns, which require comprehensive studies and effective surveillance systems. Remarkably, the use of antibiotic therapy in dairy cattle should be monitored.
摘要：
■牛奶，有营养的食物，在人类饮食中广泛食用；然而，微生物污染会对其质量和消费者健康产生负面影响。微生物污染影响牛奶质量,这会影响牛奶生产链的质量。这项研究旨在确定与从牛奶中分离出的细菌有关的牛奶成分和抗生素敏感性的变化。
■从72头奶牛收集原料奶样品。对所有牛奶样品进行加州乳腺炎测试(CMT)以确定CMT评分。我们还调查了牛奶成分，细菌培养（BC），和抗生素敏感性。
■约47.22%和30.56%的奶牛CMT+BC和自动体细胞计数(ASCC)+BC呈阳性,分别。发现粪便外观和动物年龄是奶牛ASCCBC阳性的危险因素。在大约76%的牛奶样本中发现了细菌，最常见的分离物种是α-溶血性链球菌。,凝固酶阴性葡萄球菌属。,和大肠杆菌。其中,70%对至少一种抗生素具有抗性。克雷伯菌属的多药耐药模式差异很大。
■粪便外观和动物年龄是奶牛ASCCBC阳性的危险因素。这项研究确定了抗生素和多药耐药模式，这需要全面的研究和有效的监测系统。值得注意的是,应监测奶牛使用抗生素治疗的情况。
■从72头奶牛收集原料奶样品。对所有牛奶样品进行加州乳腺炎测试(CMT)以确定CMT评分。我们还调查了牛奶成分，细菌培养（BC），和抗生素敏感性。
■约47.22%和30.56%的奶牛CMT+BC和自动体细胞计数(ASCC)+BC呈阳性,分别。发现粪便外观和动物年龄是奶牛ASCCBC阳性的危险因素。在大约76%的牛奶样本中发现了细菌，最常见的分离物种是α-溶血性链球菌。,凝固酶阴性葡萄球菌属。,和大肠杆菌。其中,70%对至少一种抗生素具有抗性。克雷伯菌属的多药耐药模式差异很大。
■粪便外观和动物年龄是奶牛ASCCBC阳性的危险因素。这项研究确定了抗生素和多药耐药模式，这需要全面的研究和有效的监测系统。值得注意的是,应监测奶牛使用抗生素治疗的情况。
