Saville W J, Wittum T E, Smith K L
Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Ohio State University, Columbus 43210, USA.
J Am Vet Med Assoc. 2000 Aug 15;217(4):541-5. doi: 10.2460/javma.2000.217.541.
To determine whether bulk-tank standard plate counts or plate loop counts and bulk-tank somatic cell counts (SCC) were associated with detection of violative antimicrobial residues in milk from dairy cattle.
Longitudinal study.
Information for 1994 through 1997 was obtained from a large milk marketing cooperative that operated in multiple states throughout the northeastern and midwestern United States (16,831 herd-years of information from 6,546 farms) and from the Ohio Department of Agriculture Grade-A Milk Certification Program (12,042 herd-years of information from 4,022 farms). Data were analyzed by use of multivariate logistic regression.
For both data sets, odds that a violative antibiotic residue would be detected increased as mean SCC for the herd-year increased. Standard plate counts and plate loop counts were not associated with odds that a violative antibiotic residue would be detected.
Results of this study suggested that the odds that a violative antibiotic residue would be found in bulk-tank milk increased as mean SCC for the herd-year increased. This suggests that management practices that would be expected to influence SCC may also influence the risk of antibiotic residue violations.
确定批量储存罐标准平板计数或平板环计数以及批量储存罐体细胞计数（SCC）是否与奶牛所产牛奶中违规抗菌药物残留的检测相关。
纵向研究。
1994年至1997年的信息来自一家大型牛奶营销合作社，该合作社在美国东北部和中西部的多个州开展业务（来自6546个农场的16831个畜群年信息）以及俄亥俄州农业部甲级牛奶认证项目（来自4022个农场的12042个畜群年信息）。通过多元逻辑回归分析数据。
对于这两个数据集，随着畜群年平均SCC的增加，检测到违规抗生素残留的几率也增加。标准平板计数和平板环计数与检测到违规抗生素残留的几率无关。
本研究结果表明，随着畜群年平均SCC的增加，批量储存罐牛奶中发现违规抗生素残留的几率也增加。这表明预期会影响SCC的管理措施也可能影响抗生素残留违规的风险。
