Rotary parlours are good for large herds due to the large throughput of cows possible. Cows may face the inside ('''external rotary''') or outside ('''internal rotary''') of the circle depending on the particular design. For a large rotary there should be at least three operators for an effective milking routine. One for udder preparation, the second for unit attachment and the third for [[Post-Milking Teat Disinfection (PMTD)|post milking teat disinfection]]. | Rotary parlours are good for large herds due to the large throughput of cows possible. Cows may face the inside ('''external rotary''') or outside ('''internal rotary''') of the circle depending on the particular design. For a large rotary there should be at least three operators for an effective milking routine. One for udder preparation, the second for unit attachment and the third for [[Post-Milking Teat Disinfection (PMTD)|post milking teat disinfection]]. |