Trials confirm efficacy of a methane-reducing feed supplement for ruminants in achieving reductions in methane emissions by dairy cows

Trials conducted at CERZOO, dairy farm of Università Cattolica del Sacro Cuore in Piacenza, Italy, confirm efficacy of Bovaer®, dsm-firmenich’s methane-reducing feed supplement for ruminants, achieving reductions close to 50% in methane emissions.

Two on-farm trails conducted by the Università Cattolica del Sacro Cuore, the first of their kind in Italy, tested the efficacy of Bovaer® in ruminants consuming Italian dairy cow diets, that are rich in corn silage. At the recommended minimum dose, Bovaer® reduced enteric methane emissions* by 44 to 50 percent while maintaining milk production and composition, milk fatty acids profile, animal health and welfare, and feed efficiency. These positive results, which follow more than 60 successful trials in 17 other countries, demonstrate once again that Bovaer® is highly effective in reducing methane emissions in dairy cows.

dsm-firmenich, innovators in nutrition, health, and beauty and Parmalat, a leader in the Italian milk market and part of the Lactalis Group, are pleased to announce today that Università Cattolica has concluded two highly successful trials of Bovaer®, dsm-firmenich’s methane-reducing feed supplement for ruminants. Reducing methane emissions is crucial to keep global warming below the 1.5°C target outlined in the Paris Agreement. Over 150 countries have signed the Global Methane Pledge, committing to reduce global methane emissions by at least 30 percent by 2030. To date, Bovaer® has helped save over 50,000 tons of CO2e by reducing methane emissions from dairy and beef cattle in its trials, pilots and implementations around the globe, making a vital and growing contribution to the realization of global climate targets.

Mark van Nieuwland, Vice President Bovaer® at dsm-firmenich, said: “There’s no time to lose when it comes to reducing greenhouse gas emissions. Cutting methane emissions is the fastest way to combat global warming and will be high on the agenda at this year’s COP 28 in Dubai. I’m proud that dsm-firmenich can offer dairy farmers a solution that will contribute to tackling one of the greatest challenges of our time. Collaboration, new ways of thinking, and pioneering innovations are all crucial to making dairy farming more sustainable.”

Erminio Trevisi, Full Professor at Università Cattolica, added: “3-NOP or Bovaer® has been extensively tested by our scientific colleagues around the world and promises to deliver a significant reduction in methane emissions from dairy cows. We are very pleased that the trial at CERZOO, Università Cattolica’s dairy farm, has achieved significant methane reductions with an Italian diet and dairy cow system, while maintaining milk quality. Our modern facilities enable us to accurately measure feed intake and, exhaled gases from the cow, as well as the more common parameters of milk production, composition, and animal health.”

Maurizio Bassani, General Manager of Parmalat Italy, commented: "Innovation has always been a hallmark of Parmalat and we are proud to be the first dairy company in Italy to experiment with what could be an important solution to make farms even more sustainable. We want to continue making the health of the planet and the quality of our products an increasingly synergistic relationship for the benefit of consumers."

During the trial at CERZOO, the dairy farm of Università Cattolica, cows were either fed an Italian, corn silage based, diet with a quarter teaspoon of Bovaer® or assigned to a control group. The GreenFeed system was used to analyze the cows’ breath for methane, carbon dioxide, and hydrogen emissions, enabling the methane reduction achieved with Bovaer® to be measured accurately. The trial also monitored other relevant parameters, such as milk production, milk composition, feed intake, and animal health. The trial consisted of two phases: the first started in summer and the second in winter, with cows receiving a quarter teaspoon of Bovaer® in both their summer and winter diets. UNICATT is currently preparing to publish the results in a peer-reviewed journal.

* Enteric emissions are the methane emissions that primarily arise during fermentation in the first stomach of ruminants such as cattle.

About dsm-firmenich

As innovators in nutrition, health, and beauty, dsm-firmenich reinvents, manufactures, and combines vital nutrients, flavors, and fragrances for the world’s growing population to thrive. With our comprehensive range of solutions, with natural and renewable ingredients and renowned science and technology capabilities, we work to create what is essential for life, desirable for consumers, and more sustainable for the planet. dsm-firmenich is a Swiss-Dutch company, listed on the Euronext Amsterdam, with operations in almost 60 countries and revenues of more than €12 billion. With a diverse, worldwide team of nearly 30,000 employees, we bring progress to life™ every day, everywhere, for billions of people.


Founded in 1921, Università Cattolica del Sacro Cuore is one of the most important Catholic Universities in Europe and in the world. It stands out in Italy for its size thanks to its five Campuses: Milan, Brescia, Piacenza, Cremona and Rome. Università Cattolica has over 40 thousand students from twelve Faculties benefit from a composite and multidisciplinary educational offer, divided into 128 degree courses, of which 23 in English and 36 double degrees. The Piacenza-Cremona Campus was founded in 1953, at the center of the so-called Italian "Food Valley". Today, this Campus hosts 3 Faculties, with approximately 3.500 students, 18 Research Centers and a high-tech experimental farm (Cerzoo). The founder of the University, Father Gemelli, designed a Faculty of Agriculture as a model for cutting-edge research for the country and with an excellent university education. The Faculty is an ideal site to explore all components of the agro-food system in the " Farm to Fork" perspective, to enhance the high quality production and to develop an authentic environmental sustainability.

About Parmalat

Parmalat, leader company in Italy in the milk market and part of the Lactalis Group, is present in Italy with 9 production plants and about 1,800 employees. Its main brands are Parmalat for milk and yogurt, Santàl for fruit juices and drinks, Zymil for lactose free milk and Chef, with a gastronomic expertise recognized in the market of cream and béchamel sauce. Parmalat is also present through local brands that represent excellence of our territory: Bern in Campania, Solac in Lazio, Carnini and Lactis in Lombardy, Latte Oro in Liguria, Sole in Sicily, Torvis and Latterie Friulane in Friuli-Venezia Giulia, Silac in Puglia.

Published on

04 September 2023


  • Press release
  • Bovaer®
  • Methane Inhibitor
  • Ruminants
  • Dairy

Media Contacts

Media contact for dsm-firmenich: André van der Elsen
Media contact for UNICATT: Sabrina Cliti
Media contact for Parmalat: Carola Beretta and Antonio Buozzi


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