Efforts to improve dairy performance have been focused on increasing milk productivity of cows through improved feeding systems and genetic potential. However, methods for evaluating milking system performance based on milk productivity have not yet been established. Milking system performance was evaluated by measuring the claw vacuum at five flow rates (1.9–8.7 kg/min) produced using a flow simulator for a single eight‐swing milking parlor with a high‐line system. Based on these results, a double eight‐parallel milking parlor with a low‐line system was installed and tested. Farmers can take data obtained from evaluations of milking system performance into account for future management decisions, such as renewing the milking system. By renewing the milking system, average milking productivity, somatic cell linear score (LS) of bulk milk, and LS of each cow were significantly improved in the year after installing the new system (p  < .01). In addition to checking conventional milking systems, this novel diagnostic method using a flow simulator can be used for checking new installations and also for proposing renovations.

中文翻译：

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使用流量模拟器提高奶牛性能和挤奶系统性能的案例研究。

改善奶牛性能的努力一直集中在通过改进饲喂系统和遗传潜力来提高奶牛的产奶量。然而，尚未建立基于产奶量评估挤奶系统性能的方法。挤奶系统的性能是通过测量五种流速（1.9-8.7 千克/分钟）下的爪真空来评估的，该真空是使用流量模拟器为带有高线系统的单个八转挤奶厅产生的。基于这些结果，安装并测试了带有低线系统的双八平行挤奶厅。奶农可以将从挤奶系统性能评估中获得的数据用于未来的管理决策，例如更新挤奶系统。通过更新挤奶系统，平均挤奶效率、散装牛奶的体细胞线性评分（LS），p  < .01）。除了检查传统的挤奶系统外，这种使用流量模拟器的新颖诊断方法还可用于检查新装置以及提出改造建议。