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Marcus Hollmann
United States
Marcus Hollmann, nutritionist and consultant for Summit Farms (Wisconsin, USA) about the Nutrition module: “I really like the outstanding graphs. They capture not only the snapshot of the herd today, but also let me view changes over time very quickly, comparing eating and rumination times. CowManager is a tool in our toolbox to respond quickly, finetune the cows’ diet and essentially make the dairy more profitable.”
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Jan van Vliet
United States
A little over 12 months ago, Jan Van Vliet tried CowManager through the Seeing is Believing trial. Initially putting CowManager ear tag sensors on 50 cows, Jan saw the benefits of the electronic herd health monitoring system right away.
“Before CowManager we spent a lot of time every day in the fresh pen looking at all the cows. With CowManager we now go directly to the cows that need our attention, instead of rolling through the entire group. CowManager lets us be more proactive and head off problems before cows get really sick,” said Jan.
“When we receive an alert that a cow is not “acting” normally we drench her right away. Previously we would not have seen cows like this begin to struggle because there are no outward signs. With CowManager it’s identified early, and we are able to fight off illness and keep them producing. You can find sick cows without CowManager, but it’s not as easy, and it’s usually too late. Our recovery rate from sickness is higher, and our culling rate is down because of CowManager."
"CowManager makes us more efficient and saves us time. It has reduced our labor needs for monitoring fresh cows, which allows us to do other things on the farm. We believe CowManager has already paid for itself. We only wish we had installed it sooner.” - Jan Van Vliet, Van Vliet Dairy
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Paulus Dairy
United States
Testimonial Paulus Dairy LLC, 1,550 cows, Fredonia Wisconsin, United States.
“I would like to think that we are good herdsmen and we
do know our cows but it still does beat us to the punch with cows. It’ll pay for itself. It's a no-brainer as far as I'm concerned.”
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World Dairy Expo 2019, Virtual Farm Tour
United States
Hosted by: Paulus Dairy LLC, Fredonia, Wis. Owned by Mike and Lori Paulus, their son Andy and daughter, Tiffany Schneider.
Highlights: 1,550 milking/Managing for Sustainability
Sponsored by CowManager & Select Sires Inc.
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Michael Johnson
United States
Podcast Trailside Holsteins, United StatesHow dairyman Michael Johnson has integrated eartag activity monitoring. Minnesota dairyman Michael Johnson has been using eartag activity monitoring from CowManager for four and a half years. In this episode, he talks about his experience installing the technology, his results and advice for other dairymen who may be considering similar technology. Johnson operates Trailside Holsteins in Fountain, Minnesota, and milks 600-cows.
Podcast by Walt Cooley, Editor Progressive Dairy. Full article,
Page 34, Progressive Dairy.
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Santiam Dairy
United States
“These little tags have really changed the way we do business!” Drew Johnson – Santiam Dairy, United States
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Milco Dairy
United States
CowManager - Detect Sick Cows Sooner
Nico Niessen, owner of Milco Dairy and County Line Dairy, and Paul Benders, manager, talk about how CowManager® helps them identify sick cows in their milking herd sooner than with manual detection. Learn more at www.selectsires.com/cowmanager
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Cow Management
United States
World Dairy Expo S1.E3: Cow Management Technology
Like many companies, CowManager launched their new product feature the week of Expo. What new technology have you found in the WDE Trade Show?
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Steve Aamodt
United States
CowManager Customer Satisfaction ft. Hubbard – Oregon
Listen to the story of Steve Aamodt, who started using the CowManager system last fall and shows that also pasture based dairy farms enjoy the benefits of CowManager
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Mark Natzke
United States
CowManager Customer Satisfaction ft. So-Fine Bovines
Mark Natzke, independent nutritionist at So-Fine Bovines explains he really likes the CowManager system. It gives him very valuable information about a cow’s health, rumination and eating time.
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Kelly Callahan
United States
CowManager Customer Satisfaction ft. Callahan Dairy - Washington
Farming sometimes demands our time more than the cows do, and that challenge was part of the reason Kelly Callahan wanted to check out CowManager. Since installing the system, Kelly now has another set of “eyes” monitoring his herd 24 hours a day, seven days a week.
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World Dairy Expo
United States
Dairy Herd Management’s Pam Fretwell caught up with Select Sires’ Vice President of Technical Service Programs, Dr. Ray Nebel, at World Dairy Expo to talk about the CowManager system. Dr. Nebel shares more about CowManager’s ability to monitor heat, health and rumination and how the computer microchip tag works. He explains why dairy producers should invest in the CowManager system. The system has expanded with two new features: Fertility Insights and Find My Cow.
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Cow Management
United States
World Dairy Expo: Cow Management Technology
Like many companies, CowManager launched their new product feature the week of Expo. What new technology have you found in the WDE Trade Show?
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Steve Otteson
United States
CowManager Customer Satisfaction Tour ft. Sassy Cow Creamery
Steve Otteson, A.I. technician at East central/Select Sires, talks about and shows the cowmonitoring system CowManager.
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Scott Bohnert
United States
CowManager Select Sires Customer Satisfaction ft. Scott Bohnert
Scott Bohnert of Bohnert Jerseys. "It's so quick, easy and simple. That's the reason why we went for the CowManager system.'
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Cor Veldhuisen
Netherlands
Melkveehouder Cor Veldhuisen runt samen met zijn vrouw en zoon een melkveebedrijf met 130 melkkoeien in Nigtevecht (Utrecht): “We hebben nu CowManager twee jaar. We hebben voor CowManager gekozen omdat we het idee hadden dat met name door de temperatuurmeting via het oor de beste manier is om te kunnen monitoren of een koe gezond is. Vroeger pakte je ook zelf het oor van een koe beet om te voelen of die koud of warm was”.
Ook zijn zoon, Jaco Veldhuisen, is enthousiast over de mogelijkheden van CowManager en de verbeteringen die op het bedrijf te zien zijn: “Ik kijk regelmatig op mijn app van hoe het zit en welke koeien tochtig zijn of welke een gezondheidsmelding hebben. Er zijn geen koeien meer die je mist”.
Op het bedrijf worden de koeien door Cor Veldhuisen zelf geïnsemineerd, aan de hand van de tochtmeldingen van CowManager. Op de applicatie van CowManager is te zien hoelang een koe al tochtig is, op die manier kun je het optimale inseminatietijdstip bepalen. Dit heeft ook effect op de tussenkalftijd verteld Cor Veldhuisen: “Ik ben van 430 dagen tussenkalftijd gezakt naar 390. Dat is helemaal toe te schrijven aan sensoren”.
CowManager geeft niet alleen tochtmeldingen maar ook gezondheidsmeldingen. Dit ervaarde Cor Veldhuisen afgelopen zomer, toen er van kuil veranderd moest worden. Van de een op de andere dag ontving hij allemaal gezondheidsmeldingen en bleken alle koeien last te hebben van pensverzuring: “Het eerste wat je dan doet als je dat ziet, is gelijk hooi voeren. Ik denk zeker, door sensoren, dat we er op tijd bij waren”.
Cor Veldhuisen is zeer te spreken over CowManager en de service: “Als er wat aan hand is met een kapotte sensor, je meldt het en je krijgt een nieuwe toegestuurd. In ons geval werkt het en ik denk dat we het snel terugverdiend hebben. En het is gewoon een stuk bedrijfsgemak”.
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Santiam Dairy in Turner, Oregon, is home to 500 milking cows. The dairy is owned by Chris DeVries and managed by son-in-law Drew Johson. After only 7 months of using the CowManager system they already booked great results.
“I
can’t believe how wonderful and easy it is working with these ear-tags. Going through our records, I noticed that our pregnancy rates went up, our death loss down and it saves us a couple of hours of working a day".
The CowManager ear tags monitor the activity, rumination and ear temperature of each cow. This accurate information about a cow’s performance is essential to success in dairy farming. The better you know how your animals feel, the better equipped you are to take the right action at the right time. Adequate intervention will result in higher pregnancy rates, improved lactation, a better health status, and fewer cow losses. CowManager’s revolutionary ear tag provides this information for each individual cow, and fully supports the needs of the dairyman. Resulting in a better performance and a lower work-load.
Before using CowManager, the results of the breeding program were just fine, according to Drew Johnson. However, to maintain the pregnancy rates they needed to use lots of medication. Checking on all the heifers used to be very time-consuming and being short on one man on the team didn’t help our ‘spare-time’ at all.
“In terms of saving time, we used to spend two hours every day chalking tails, watching for heats, and checking fresh cows, but we don’t do that anymore and we’re having better results!
The CowManager system combines data from the ear-tag with a special algorithm, that gives the dairyman accurate health alerts. These health alerts make sure that you can catch an ill cow early. Early detection of the sickness is key for adequate treatment with less and/or cheaper medication. And it can even prevent the milk-production from dropping. According to Drew Johnson, the health alerts from CowManager saved him $8.000 only in medical costs.
“It also saved us time finding and treating cows that are truly sick. You wouldn’t believe how soon the tags pick up illness. Now we save time and $8.000 because we’re only treating cows that need it, and not treating those that don’t.”
“I can’t say enough good about the system! These little tags have really changed the way we do business!”

John and Meghan Palmer, the owners of Prairie Star Dairy, Waukon, Iowa milk 120 cows and have 400 acres of crop production along with 200 acres of pasture, with help from their five children. Their milking operation has been certified as organic for several years. In 2015, the Palmers moved into an impressive new free stall barn for improved cow comfort. In December 2016, the Palmer’s purchased a CowManager automated monitoring system with the Fertility and Health modules, which has provided the Palmers with Fertility alerts for cows in heat and Health alerts for cows that appear sick based on a reduction in activity, feeding time and rumination levels. They have SensOors on both cows and heifers.
During the long, cold upper-Midwest winter of 2017-2018, the Palmers were challenged with a spread of pneumonia in their milking cows, caused by the Pasteurella multocida bacteria, which is very contagious and deadly. A common term for this disease in cattle has been termed ‘Shipping Fever’. For the Palmer’s, the value of their investment in CowManager to provide early detection of the pneumonia symptoms was critical in them being able to get early detection of afflicted cows and treat them with organic-approved methods to help maintain their organic status. John Palmer told us that “Initially we had six cows in a sick pen and three of these died despite treatment with antibiotics, but we soon learned based on the data in CowManager, which cows were coming down with pneumonia and we managed to get the rest of the herd through this outbreak. For this issue, the temp alerts available with CowManager were also critical in the diagnosis of cows that needed treatment and was as important to us as the rumination data. Cows that were afflicted didn’t look sick but with a reduction in appetite, declining rumination and elevated temperatures, the CowManager system would flag these cows with a sick alert, which was very helpful.”

Left to right: Faith Palmer, John Palmer and Meghan Palmer.
John also added that “at one time during this challenge, we had 16-17 cows that CowManager identified as being sick with the Health module alerts and using the data available with the system was critical to our ability to manage the treatment process. We only ended up with a few cows that we had to use antibiotics to save, which resulted in these cows having to be sold to a conventional dairy. Without the early alerts from CowManager, we would likely have decided to conventionally treat more cows than we needed to, and that saved us from having to cull a larger percentage of our herd, so having the CowManager system available during this health event was a huge benefit for us.”
Meghan commented on the ease of using the CowManager data; “The CowManager mobile app was very helpful when dealing with this challenge, as we could use it to continually monitor treated cows and look for new cows that showed up on the Health alert list. Once we figured out the pattern, we were able to look closely at the hourly data available for individual cows with the CowManager system to see if the treatment regime was working.”
Dr. David Gibbs is the veterinarian for Prairie Star Farm and had these comments about the value of CowManager to help manage this challenge: “CowManager was an incredibly helpful tool during a Pasteurella pneumonia outbreak at John and Meghan's dairy this past winter. The flagged sick cows would appear fine only to examine them and find 106-degree fevers and very early severe pneumonia. CowManager helped limit the herd damage by identifying sick cows before we could have by simply doing a walk through.”
When discussing their initial investment in CowManager, John said that “We initially purchased CowManager to improve heat detection with the Fertility module, which it has done well but for us the Health module has been a big benefit as well and this incident has made our investment in CowManager well worth it.” Mehgan also summed up their investment in CowManager by saying “CowManager is a great fit for Organic herds. We certainly are grateful for its function in helping us navigate through this situation, but we also love it for its effectiveness in monitoring fresh cows, cows off feed, and heats. CowManager is an invaluable tool to us and has proven its worth through daily use besides this unfortunate event.
John and Meghan Palmer – Prairie Star Dairy
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“To be able to look up any cow, at any time, on my phone and make decisions about her in real time when I am at cow side or at home has been very beneficial to me.”

In 2015, Trailside (Fountain, MN) was considering hiring a herdsperson to monitor herd health because there just weren’t enough hours in a day to do a good job. They purchased CowManager instead. Mike Johnson notes, “To be able to look up any cow, at any time, on my phone and make decisions about her in real time when I am at cow side or at home has been very beneficial to me.” After purchasing CowManager, Trailside caught more cows in heat after the VWP, reduced the number of shots they were giving, bred more cows right after the VWP and at the optimal time, and eliminated tail chalking. Mike also notes that with CowManager they are catching more cows in heat at 19-22 days since last heat. Mike believes that using the Health Module in conjunction with the Fertility Module to confirm heats is one of the “biggest benefits” of CowManager. He adds, “With CowManager, early detection of mastitis, fresh cow illnesses and subclinical respiratory infections has been substantial. I am definitely catching the majority of sick cows earlier. In most cases, there is a faster recovery and the cows bounce back sooner.”
Cutting back on the use of hormones, improving fresh cow management and decreasing the number of cull cows were the goals that Deluur Dairy wanted to achieve. To do this, Hendrik Eggink, owner of Deluur Dairy, was looking for a cow monitoring system.

His preference for the easy-to-apply ear-tags was greater than for neck collars or leg bands. For that reason, Hendrik decided to try CowManager ear tags by using our ‘seeing is believing’ offer of February 2018. ‘Seeing is believing is an ability to try out the system, without a big financial commitment’, according to the dairyman. It enables farmers to try all three modules Fertility, Health and Nutrition free of charge for 90 days. The only thing the farmer needs to invest in, is the hardware. Another reason Hendrik chose for CowManager over other systems is because of its simplicity and easy installation.
The 90-days trial period was more than enough to convince dairyman Eggink of the power of CowManager. It even exceeded his expectations; 'I am convinced that the CowManager tool is a great help in managing our dairies'. Deluur Dairy has more than 3,100 dairy cows spread over multiple locations. Monitoring all those cows for heat and health is labor intensive and slows down the decision-making process. CowManager makes this process easier, because it allows farmers to retrieve a list with just the cows that have a heat or health alert and therefore need extra attention. It is up to the dairyman to follow up on the cows in this list.
'Our management of fresh cows has been greatly simplified’, claims Eggink. With the alerts list from CowManager he can accurately detect the cows in heat for insemination and all the cows that have a difficult start-up. This saves time and enables him to make adequate decisions. Before using CowManager the cows with a difficult start-up went to the next group unnoticed. This caused major health and production problems, resulting in unnecessary large numbers of cull cows. Now, these cows stay in the fresh cow group until they are fully recovered, resulting in a better performing and healthier cow.
'After having used CowManager for 3 months, we terminated our Ovsync program' Before CowManager, Deluur Dairy was a 100% Ovsync herd. Thanks to the heat alerts given by the CowManager System, that is no longer necessary. Currently, Ovsync is used when a cow hasn’t been bred after 100 days in milk and is checked by a vet.
Also the percentage of pregnant cows is increasing; "Our percentage of cows pregnant during preg check (palpation nr.) went from 53% on average to 67% and continues to improve. Recently we hit 80% on Dairy #1. The percent of cows pregnant in the herd went from 50% before CowManager to near 60% now (we installed it 6 months ago!). We are pushing out our DIM at first breeding to improve our peak milk production"
“We are very impressed with CowManager. We continue to improve herd health and fertility with the help of the system. I recommend CowManager to everyone, it really gives you a ‘peace of mind’ that your animals are being looked after.”
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Marcus Hollmann, nutritionist and consultant for Summit Farms (Wisconsin, USA) about the Nutrition module: “I really like the outstanding graphs. They capture not only the snapshot of the herd today, but also let me view changes over time very quickly, comparing eating and rumination times. CowManager is a tool in our toolbox to respond quickly, finetune the cows’ diet and essentially make the dairy more profitable.”
Discover how the owners and staff at Summit Farms, Plymouth, Wisconsin, work with CowManager everyday.
A little over 12 months ago, Jan Van Vliet tried CowManager through the Seeing is Believing trial. Initially putting CowManager ear tag sensors on 50 cows, Jan saw the benefits of the electronic herd health monitoring system right away.
“Before CowManager we spent a lot of time every day in the fresh pen looking at all the cows. With CowManager we now go directly to the cows that need our attention, instead of rolling through the entire group. CowManager lets us be more proactive and head off problems before cows get really sick,” said Jan.
“When we receive an alert that a cow is not “acting” normally we drench her right away. Previously we would not have seen cows like this begin to struggle because there are no outward signs. With CowManager it’s identified early, and we are able to fight off illness and keep them producing. You can find sick cows without CowManager, but it’s not as easy, and it’s usually too late. Our recovery rate from sickness is higher, and our culling rate is down because of CowManager."
"CowManager makes us more efficient and saves us time. It has reduced our labor needs for monitoring fresh cows, which allows us to do other things on the farm. We believe CowManager has already paid for itself. We only wish we had installed it sooner.” - Jan Van Vliet, Van Vliet Dairy
One thing leads to another with activity monitoring at Benthem Brothers Dairy
Testimonial Paulus Dairy LLC, 1,550 cows, Fredonia Wisconsin, United States.
“I would like to think that we are good herdsmen and we
do know our cows but it still does beat us to the punch with cows. It’ll pay for itself. It's a no-brainer as far as I'm concerned.”
Virtual Farm Tour of Paulus Dairy LLC, 1550 cows, Fredonia Wisconsin, United States. Owned by Mike and Lori Paulus, their son Andy and daughter, Tiffany Schneider.
Hosted by: Paulus Dairy LLC, Fredonia, Wis. Owned by Mike and Lori Paulus, their son Andy and daughter, Tiffany Schneider.
Highlights: 1,550 milking/Managing for Sustainability
Sponsored by CowManager & Select Sires Inc.
Podcast Trailside Holsteins, United StatesHow dairyman Michael Johnson has integrated eartag activity monitoring. Minnesota dairyman Michael Johnson has been using eartag activity monitoring from CowManager for four and a half years. In this episode, he talks about his experience installing the technology, his results and advice for other dairymen who may be considering similar technology. Johnson operates Trailside Holsteins in Fountain, Minnesota, and milks 600-cows.
Podcast by Walt Cooley, Editor Progressive Dairy. Full article,
Page 34, Progressive Dairy.
“These little tags have really changed the way we do business!” Drew Johnson – Santiam Dairy, United States
‘Monitoring 10,000 cows within a blink of an eye’
John and Meghan Palmer
“CowManager is an invaluable tool for our dairy”
Interview with Stef from CowManager
Mike Johnson - Trailside Hoslteins, US
Improve the pregnancy rates and decrease the number of cull cows, with ease
The CowManager brochure of Select Sires
CowManager - Detect Sick Cows Sooner
Nico Niessen, owner of Milco Dairy and County Line Dairy, and Paul Benders, manager, talk about how CowManager® helps them identify sick cows in their milking herd sooner than with manual detection. Learn more at www.selectsires.com/cowmanager
World Dairy Expo S1.E3: Cow Management Technology
Like many companies, CowManager launched their new product feature the week of Expo. What new technology have you found in the WDE Trade Show?
CowManager Klanttevredenheid met Jon Losa - Losa Dairy
CowManager Customer Satisfaction ft. Hubbard – Oregon
Listen to the story of Steve Aamodt, who started using the CowManager system last fall and shows that also pasture based dairy farms enjoy the benefits of CowManager
CowManager Customer Satisfaction ft. So-Fine Bovines
Mark Natzke, independent nutritionist at So-Fine Bovines explains he really likes the CowManager system. It gives him very valuable information about a cow’s health, rumination and eating time.
CowManager Customer Satisfaction ft. Callahan Dairy - Washington
Farming sometimes demands our time more than the cows do, and that challenge was part of the reason Kelly Callahan wanted to check out CowManager. Since installing the system, Kelly now has another set of “eyes” monitoring his herd 24 hours a day, seven days a week.
CowManager Klanttevredenheid met Fir Ridge Holstein Farm LLC
Southern Ridge Cow Palace
Dairy Herd Management’s Pam Fretwell caught up with Select Sires’ Vice President of Technical Service Programs, Dr. Ray Nebel, at World Dairy Expo to talk about the CowManager system. Dr. Nebel shares more about CowManager’s ability to monitor heat, health and rumination and how the computer microchip tag works. He explains why dairy producers should invest in the CowManager system. The system has expanded with two new features: Fertility Insights and Find My Cow.
World Dairy Expo: Cow Management Technology
Like many companies, CowManager launched their new product feature the week of Expo. What new technology have you found in the WDE Trade Show?
CowManager Customer Satisfaction Tour ft. Sassy Cow Creamery
Steve Otteson, A.I. technician at East central/Select Sires, talks about and shows the cowmonitoring system CowManager.
CowManager Select Sires Customer Satisfaction ft. Scott Bohnert
Scott Bohnert of Bohnert Jerseys. "It's so quick, easy and simple. That's the reason why we went for the CowManager system.'
CowManager Klanttevredenheid met John De Groot, Son Dairy
Melkveehouder Cor Veldhuisen runt samen met zijn vrouw en zoon een melkveebedrijf met 130 melkkoeien in Nigtevecht (Utrecht): “We hebben nu CowManager twee jaar. We hebben voor CowManager gekozen omdat we het idee hadden dat met name door de temperatuurmeting via het oor de beste manier is om te kunnen monitoren of een koe gezond is. Vroeger pakte je ook zelf het oor van een koe beet om te voelen of die koud of warm was”.
Ook zijn zoon, Jaco Veldhuisen, is enthousiast over de mogelijkheden van CowManager en de verbeteringen die op het bedrijf te zien zijn: “Ik kijk regelmatig op mijn app van hoe het zit en welke koeien tochtig zijn of welke een gezondheidsmelding hebben. Er zijn geen koeien meer die je mist”.
Op het bedrijf worden de koeien door Cor Veldhuisen zelf geïnsemineerd, aan de hand van de tochtmeldingen van CowManager. Op de applicatie van CowManager is te zien hoelang een koe al tochtig is, op die manier kun je het optimale inseminatietijdstip bepalen. Dit heeft ook effect op de tussenkalftijd verteld Cor Veldhuisen: “Ik ben van 430 dagen tussenkalftijd gezakt naar 390. Dat is helemaal toe te schrijven aan sensoren”.
CowManager geeft niet alleen tochtmeldingen maar ook gezondheidsmeldingen. Dit ervaarde Cor Veldhuisen afgelopen zomer, toen er van kuil veranderd moest worden. Van de een op de andere dag ontving hij allemaal gezondheidsmeldingen en bleken alle koeien last te hebben van pensverzuring: “Het eerste wat je dan doet als je dat ziet, is gelijk hooi voeren. Ik denk zeker, door sensoren, dat we er op tijd bij waren”.
Cor Veldhuisen is zeer te spreken over CowManager en de service: “Als er wat aan hand is met een kapotte sensor, je meldt het en je krijgt een nieuwe toegestuurd. In ons geval werkt het en ik denk dat we het snel terugverdiend hebben. En het is gewoon een stuk bedrijfsgemak”.