Milk Ejection in Cows Mechanically Stimulated During Late Lactation

摘要: Abstract Twelve Holstein cows in late lactation were divided into three groups by previous milk production. The average time for all was 223 days. Cows subjected to four treatments of teat stimulation: 1) no stimulation, 2) manual stimulation 60s, 3) positive pressure pulsation (during first 60s after cup application), and 4) fast the application. Each treatment lasted 1 wk. On last 3 days each treatment, flow rate curves recorded twice daily. Milk yield, milking time, dynamics determined from these curves. Absolute peak exhibited only 10% higher than those unstimulated cows. Manually stimulated required 30s less machine-on This sufficient offset routine. total stimulate cow, i.e., procedure longer manually but not different that pulsation. patterns similar. Flow given when corrected similar stimulation. Milk, fat, protein yields across treatments.