Our references
Innovative solutions to combat heat stress in the barn
Heat stress in the barn is one of the main reasons for an unhealthy barn climate and many diseases or poor performance in the herd. Whether for cows, calves or other animals kept indoors, with our CAT3000® we bring fresh air into your barn, avoid heat stress and ensure a healthy barn climate. Discover our current projects here.
From practice for practice,
Yours, Christian Oswald.

Stehle and Schmidt GbR, Baden-Württemberg
Fresh air for happy cows at Stehle & Schmidt GbR Stehle & Schmidt GbR relies on innovative barn technology for the well-being of its herd. In their three-row cubicle barn, our CAT3000® hose ventilation system ensures an optimal barn climate and happy cows....
Vermögensgemeinschaft Spitzkunnersdorf eG, Saxony
Successful Improved stable climate at Vermögensgemeinschaft Spitzkunnersdorf eG Modern barn ventilation for healthy cows Since 2024, Vermögensgemeinschaft Spitzkunnersdorf eG in Saxony has been relying on the innovative CAT3000® tube ventilation system from Dr....
Haldenhof – Martin Glökler, Baden-Württemberg
Optimum calf health: barn ventilation at Haldenhof Challenge: Respiratory diseases in the calf barn Martin Glökler, a farmer in the Black Forest and operator of the Haldenhof farm, was faced with a problem that many dairy farmers are familiar with: Respiratory...
Inntal straw calf – Straßer family, Bavaria
Efficient hose ventilation for optimum calf rearing An animal-friendly stable with well thought-out ventilation The Straßer family decided to build a new barn on their farm with forage rearing. As calves need a lot of attention and optimum housing conditions when...
Ivana Giaroli, Emilia-Romagna
Fresh air in the barn Optimum barn climate with CAT3000® - experience report from Italy In the hot and humid climate of Reggio Emilia, Ivana Giaroli relies on CAT3000® hose ventilation to provide optimum care for her 600 dairy cows. Thanks to the constant...
Kumlehn Holstein, Lower Saxony
Fresh air for the Kumlehn Holsteins Since 2023, our system has ensured a pleasant barn climate for 125 cows The Kumlehn Holsteins farm in Holzminden has been relying on CAT3000® hose ventilation from Dr. Knopf & Oswald since 2023 - for a perfect barn climate....
Drexl-Hof, Bavaria
Optimum barn climate For the Drexl farm Success story: Better air for people and animals In our dairy barn, we have installed an innovative solution with CAT3000® hose ventilation to sustainably improve the barn climate and provide our dairy cows with optimum...
Würth family, Switzerland
Top-class hose ventilation in the Würth family's agricultural business Optimum fresh air supply with CAT3000® from Dr. Knopf & Oswald The Würth family's farm in Switzerland relies on the proven CAT3000® hose ventilation system from Dr. Knopf & Oswald to...
Synfarm, Switzerland
CAT3000®: Effective hose ventilation for relaxed cows in Switzerland Innovative nozzle technology against heat stress We are delighted that our CAT3000® hose aeration system is also convincing in Switzerland! Several of our systems have been installed at Syntech...
Dotzler company, Bavaria
Fresh air for healthy cows - Dotzler relies on CAT3000® Flexibility and effectiveness for the Dotzler agricultural business Since 2024, the Dotzler farm in Hirschau has been relying on the innovative CAT3000® hose ventilation system from Dr. Knopf and Oswald - a...
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