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Cattle Boards
Got Milk?
Anyone ever used one of these?
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<blockquote data-quote="suzorse" data-source="post: 1150447" data-attributes="member: 17294"><p>here is some info, this was posted on Keeping a Family Cow</p><p> Suzanne</p><p>Evaluation of the Impact of Milking Machine Design on Teat</p><p>Swelling</p><p>William Gehm</p><p>LR Gehm, LLC</p><p>9502 NYS Rt. 79</p><p>Lisle, NY 13797</p><p>Abstract</p><p>A study was completed to evaluate the effect</p><p>milking machines have on teat condition of</p><p>dairy cows. </p><p></p><p>Modern milking machines extract milk from th</p><p>e dairy cow by applying a vacuum to the teat</p><p>creating a pressure difference that results in milk</p><p>flowing from the teat. Vacuum is applied by</p><p>placing the teat into a liner in</p><p>which the interior of the liner</p><p>is subjected to a vacuum. The</p><p>vacuum must be periodically reduced or remove</p><p>d to provide the teat with a rest period. The</p><p>rest period is required because the vacuum</p><p>causes the fluids (blood</p><p>and other fluids) to</p><p>accumulate in the teat causing congestion.</p><p>Modern conventional milking machines attempt</p><p>to provide this rest period by periodically</p><p>applying a higher pressure (atmospheric) to th</p><p>e exterior of the liner causing the liner to</p><p>collapse toward the teat. The typical convent</p><p>ional milking machine will thereby reduce the</p><p>vacuum level on the teat. The periodic liner</p><p>action created by the pulsi</p><p>ng of higher pressure</p><p>on the exterior of the liner</p><p>is provided by a pulsator.</p><p>There have been numerous published studies docu</p><p>menting the effect of this milking action on</p><p>the teat. A study published in the</p><p>Irish Veterinary Jour</p><p>nal (1) documents the damage inflicted</p><p>on the teat by this process when cows are milk</p><p>ed with typical modern milking machines. This</p><p>study evaluates the changes in th</p><p>e teat structure after being</p><p>milked with both conventional</p><p>wide and narrow bore liners and the associated</p><p>typical US style conventional pulsation anthe Irish DairyMaster style pulsation. The results</p><p>are reported using a teat damage index</p><p>defined as total teat</p><p>sinus injury (TSI). </p><p></p><p>Results included ultrasounding teats, slaughtering of some animals etc. </p><p></p><p>If one looks up "milk machine damage" or similar searches, you will find out why a milk machine works, what causes teat damage and mastitis and find out what you need in a milk machine to work. Milk machines work on pulsation - the inflations squeeze milk out like a hand would. They do NOT suck milk out - the machine showing is a milk sucker - it has a non collapsible inflation that is simply pulling vacuum on the teat which would cause swelling and congestion in the teats. </p><p></p><p>Anybody who wonders if this is true, should use a breast pump on themselves vs. a suction pump like used in the porn industry (or even a vacuum cleaner). The pump that simply pulls vacuum causes the most ridiculous swelling after not very long period of time, and just understanding how/ why a milk machine works should be enough information. </p><p></p><p>I would theorize that maybe if one could get a machine like the one built to release vacuum for a second every now and then that it could provide enough relief, but I don't know how it could be done safely in a way that would not involve the syringe falling off - inflation squeaking, slippage and improper vacuum interruption causes mastitis rather quickly (ask me how I know. . . ) so I have no idea how you would do that in a solid cylinder without losing vacuum around the teats in a way that could allow backflushing of milk etc. I also wonder how capable the machine shown is of maintaining 12lbs pressure - you do not want fluctuations and that machine has no pressure relief valve, and no way of sticking to 12lbs pressure without dropping up and down which is also well known for causing teat damage. </p><p></p><p>And in re. to experience, there was ONE member on here who built a unit like that and had supposedly used it without any problems for the 6-9 months they had been milking, but to me that is no indication that it is a system that is okay. I HATE dealing with mastitis, and teat damage problems are really hard to fix. </p><p></p><p>Not saying this person's dad isn't very inventive, just that some integral components are missing in the machine <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> If simply sucking milk out worked, believe me, dairies would not have bothered with pulsators, rubber collapsible inflations, balance tanks, relief valves etc.</p></blockquote><p></p>
[QUOTE="suzorse, post: 1150447, member: 17294"] here is some info, this was posted on Keeping a Family Cow Suzanne Evaluation of the Impact of Milking Machine Design on Teat Swelling William Gehm LR Gehm, LLC 9502 NYS Rt. 79 Lisle, NY 13797 Abstract A study was completed to evaluate the effect milking machines have on teat condition of dairy cows. Modern milking machines extract milk from th e dairy cow by applying a vacuum to the teat creating a pressure difference that results in milk flowing from the teat. Vacuum is applied by placing the teat into a liner in which the interior of the liner is subjected to a vacuum. The vacuum must be periodically reduced or remove d to provide the teat with a rest period. The rest period is required because the vacuum causes the fluids (blood and other fluids) to accumulate in the teat causing congestion. Modern conventional milking machines attempt to provide this rest period by periodically applying a higher pressure (atmospheric) to th e exterior of the liner causing the liner to collapse toward the teat. The typical convent ional milking machine will thereby reduce the vacuum level on the teat. The periodic liner action created by the pulsi ng of higher pressure on the exterior of the liner is provided by a pulsator. There have been numerous published studies docu menting the effect of this milking action on the teat. A study published in the Irish Veterinary Jour nal (1) documents the damage inflicted on the teat by this process when cows are milk ed with typical modern milking machines. This study evaluates the changes in th e teat structure after being milked with both conventional wide and narrow bore liners and the associated typical US style conventional pulsation anthe Irish DairyMaster style pulsation. The results are reported using a teat damage index defined as total teat sinus injury (TSI). Results included ultrasounding teats, slaughtering of some animals etc. If one looks up "milk machine damage" or similar searches, you will find out why a milk machine works, what causes teat damage and mastitis and find out what you need in a milk machine to work. Milk machines work on pulsation - the inflations squeeze milk out like a hand would. They do NOT suck milk out - the machine showing is a milk sucker - it has a non collapsible inflation that is simply pulling vacuum on the teat which would cause swelling and congestion in the teats. Anybody who wonders if this is true, should use a breast pump on themselves vs. a suction pump like used in the porn industry (or even a vacuum cleaner). The pump that simply pulls vacuum causes the most ridiculous swelling after not very long period of time, and just understanding how/ why a milk machine works should be enough information. I would theorize that maybe if one could get a machine like the one built to release vacuum for a second every now and then that it could provide enough relief, but I don't know how it could be done safely in a way that would not involve the syringe falling off - inflation squeaking, slippage and improper vacuum interruption causes mastitis rather quickly (ask me how I know. . . ) so I have no idea how you would do that in a solid cylinder without losing vacuum around the teats in a way that could allow backflushing of milk etc. I also wonder how capable the machine shown is of maintaining 12lbs pressure - you do not want fluctuations and that machine has no pressure relief valve, and no way of sticking to 12lbs pressure without dropping up and down which is also well known for causing teat damage. And in re. to experience, there was ONE member on here who built a unit like that and had supposedly used it without any problems for the 6-9 months they had been milking, but to me that is no indication that it is a system that is okay. I HATE dealing with mastitis, and teat damage problems are really hard to fix. Not saying this person's dad isn't very inventive, just that some integral components are missing in the machine :) If simply sucking milk out worked, believe me, dairies would not have bothered with pulsators, rubber collapsible inflations, balance tanks, relief valves etc. [/QUOTE]
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