CELLCHECK TIP OF THE MONTH
Don’t Risk it With Old Liners!
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T he liner is the only part of the milking machine that comes in direct contact with the cow. A cow spends on average 60 hours of every lactation in contact with this liner. Do you worry that the recommendation to change your milking machine liners has been developed just to sell more liners?
Do you think that liners which are ‘a bit worn’ won’t make much of a difference?
Well rest assured that changing your liners will increase your milk yield and udder health!
As liners operate over time they lose tension, absorb fat and hold bacteria. This deterioration is sufficient to reduce the speed and completeness of milking, resulting in a loss in milk yield. This also increases teat end damage and increases the spread of mastitis bacteria. To reduce the impact of aged liners on milk yield and udder health, the industry recommendation is to change liners after 2,000 milkings or 6 months, whichever comes first.
To see when exactly you should change your liners, use the following simple calculation:
2,000 X NUMBER OF MILKING UNITS HERD SIZE X NUMBER OF MILKINGS PER DAY
NUMBER OF DAYS =
Example: A herd of 100 cows milking twice per day [number of milkings per day] in a 10 unit swing-over parlour [number of milking units] would take approx 100 days to reach 2,000 cow milkings
2,000 X 10 100 X 2
= 100 DAYS
NUMBER OF DAYS =
If the full herd was milking by 1st March, with new liners in spring, by 1st August they will have done at least 150 days milking. But they should have been changed after 100 days i.e. around June 9 th .
CELLCHECK NEWSLETTER | JUNE EDITION 2018
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