4.3.3.1. Full pre-stimulation
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by means of the actuator the milking cups are forced to swing through the milk
hoses in order to relax of the udder muscles and to ensure a high concentration of
the hormone oxytocin that is necessary for emptying the alveolae. This is similar to
the natural behaviour of the cow at the beginning of the calf’s sucking. At the same
time the pulsation is automatically adjusted such that only a low amount of milk
can leave the system in order to avoid penetration of damaging vacuum into the
udder cistern during the stimulation process.
4.3.3.2. Main milking
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Ater a successful pre-stimulation the pulsation is adjusted to 60% suction phase
and 40% relief phase with a pulsator frequency of 60 cycles per minute.
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At the same time the pulsation is running in sequential mode, i.e., neither change-
mode pulsation nor common-mode pulsation. This ensures a remarkably gentle
milk removal resulting in low FF-contents in the delivery milk. (FFA = free fatty
acids)
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During this process concurrently a stimulation frequency is transferred to the teat
during the opening phase of the teat rubber, similar to the calf acting with its
tongue on the teat in a natural way.
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A
dditionally, the actuator frequency is reduced to a type of oscillation that is con-
venient and gentle for the animal in order to achieve a milking of the cow that is as
convenient as possible.
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The vacuum value for milking should be adjusted to 32 to 36 kPa at most.
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The behaviour of the animals and the degree of emptying the udders during the
milking process as well as attachment of the milking cups should be taken as
parameters for adjusting the value of the vacuum. The entirety of these measures
results in a particular relaxation of the dairy animal during the main milking pro-
cess.
4.3.3.3. Final milking
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At the end of the main milking process when reaching a milk flow of 800 g/min the
actuator movement is enhanced such that the muscles of the udder are again in-
tensively relaxed by the actuator motion so that the remaining procedural milk may
be extracted from the connecting channels positioned between the alveolae and
the milk cistern and into the teat cavity.
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Upon reaching a milk flow of 200 g/min and after an adjustable delay time, prefer-
ably 10 seconds, the automatic detachment is activated.
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The reliable and gentle withdrawal of the milk hoses and the milking cups into the
milking cup magazine is to be accomplished without touching the floor of the milk-
ing box. Concurrently the milk hoses are automatically cleaned by water nozzles
and brushes.
©Siliconform GmbH & Co. KG, 2013, all rights reserved subject to technical changes (11.12.2013)