Approximately how many 'squirts' from a cow's udder are needed to yield a gallon of milk?
#29018. Asked by mezzabee. (Mar 03 03 7:09 PM)
Research tends to suggest that this will vary to some degree depending upon the breed, age and udder capacity of the cow in question. |
Cows have to be milked twice a day and can produce up to 8 gallons of milk, 4 gallons at each milking which takes between 5 and 10 minutes if done by machine. This appears to be about half the time than when done by hand, presumably because all 4 teats are connected to a machine and it is difficult to simultaneously manipulate 4 teats when you only have two hands. Every cow fills her teat back up at a different rate depending upon how full the udder is so the 'squirt' frequency may need to be varied to obtain a full teat of milk or only a partial teat volume (little squirt?) may be available.
Those wishing to learn to milk a cow by hand are often started on a mock up model cow rather than the real thing.
The udder and teats being a rubber glove filled with 'white' water.
Apparently the fingers are a very accurate representation of the real thing.
Having measured the amount of water displaced by the middle finger of a large pair of rubber gloves I am pleased to announce that around 40 ml appears to be the 'squirt' volume.
As to how many are needed to make a gallon?
1 UK gallon is a little over 4.5 litres so approximately 113 squirts are required.
In the USA this would only be about 93 squirts since their gallon is only a little over 3.75 litres.
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