At present rotary type milking equipment is popular in Latvia. It is used almost on all farms where there are 400 and more cows. Nevertheless, the maximal productivity of work can be reached if the cows are continuously driven from the waiting yard to the milking equipment and if sufficient intensity of animal traffic is ensured. Therefore, the rotary type milking equipment is usually supplemented with a mechanical cow driver that crowds the cows in the waiting yard at the same time driving them towards the milking parlour.In the research it has been stated that using the heavy type mechanical cow drivers Cow Mander 640 or Cow Mander 740 the maximal cow crowding in the waiting yard reaches 1.1–1.2 m2 calculating per one cow and it ensures the cow traffic intensity 8–11 s cow-1. If, in turn, the medium heavy driver Cow Mander 015 is used, the cow crowding is only 1.5–1.7 m2 cow-1 and the cow traffic intensity reaches 15–23 s cow-1. Using rotary type milking equipment with 20–30 milking places such cow traffic intensity is sufficient but if the rotary milking equipment has 50 and more milking places the necessary cow traffic intensity cannot any more be ensured by increasing the cow crowding. Therefore, the exploitation work productivity of the rotary type milking equipment with 50 and more places is by 30–40% less than its technological productivity of work that is obtained by means of calculations.
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机译：目前，旋转式挤奶设备在拉脱维亚很流行。几乎所有有400多头奶牛的农场都使用它。但是，如果将母牛从候车场连续挤到挤奶设备上，并且确保有足够的牲畜运输强度，则可以达到最大的工作效率。因此，旋转式挤奶设备通常附加有机械式母牛驱动器，该挤奶器将母牛挤在候车场中，同时将它们推向挤奶厅。在研究中已经指出，使用重型机械式母牛驱动器Cow Mander 640或Cow Mander 740在每家母牛的候车场中的最大拥挤量达到1.1-1.2 m2（每头母牛计算），并确保母牛的交通强度为8-11 s cow-1。反过来，如果使用中等重量的驾驶员Cow Mander 015，则母牛的拥挤仅为1.5–1.7 m2 cow-1，母牛的交通强度达到15-23 s cow-1。使用具有20–30个挤奶场所的旋转式挤奶设备，这样的母牛挤奶强度就足够了，但是如果旋转挤奶设备具有50个或更多的挤奶场所，那么通过增加母牛的拥挤度就无法再确保所需的母牛挤奶强度。因此，拥有50个以上场所的旋转式挤奶设备的开发工作生产率比通过计算获得的工作技术生产率低30–40％。
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