🔥 Trending Extreme Heat Threatens Italy's Dairy Farms and Parmesan Production

Extreme heat is significantly impacting dairy farming in Italy, particularly threatening the production of iconic cheeses like Parmigiano Reggiano and burrata. The rising temperatures are causing a multitude of problems for dairy cows and the entire dairy supply chain ¹⁴⁵.

Reduced Milk Quality and Quantity

One of the most direct and critical effects of extreme heat is the reduction in both the quantity and quality of milk produced by dairy cows ²³⁶.

• Decreased Milk Yields: High temperatures stress cows, leading them to produce less milk ⁵⁹. This phenomenon is observed across Italy, with milk production declining during summer months according to an analysis by CLAL, a dairy industry research center ⁶.
• Degraded Milk Composition: Beyond just the volume, the quality of the milk is also compromised. Heat stress degrades the protein and fat levels in milk, which are crucial components for cheese production ⁶. This directly affects the characteristics and quality of the final cheese product.

Stress on Dairy Cows

Cows are particularly susceptible to heat stress, which manifests in various physiological and behavioral changes ⁹.

• Physiological Stress: Extreme heat puts immense stress on dairy cows, impacting their overall health and well-being ⁹. This stress can reduce their appetite and alter their metabolic processes, further contributing to lower milk production.
• Impact on Iconic Cheeses: The Parmigiano Reggiano Consortium's president, Nicola Bertinelli, highlighted in 2026 that extreme heat directly affects milk's quality and quantity, posing a significant threat to the historic cheese production ²⁷⁸. Similarly, in Puglia, the heartland of burrata production, rising temperatures are stressing cows, reducing milk output, and undermining cheese quality, thus disrupting the burrata supply chain ¹⁰.

Increased Costs for Farmers

To mitigate the effects of heat stress on their herds, dairy farmers are forced to incur additional costs.

• Cooling Measures: Farmers often have to invest in cooling systems, such as fans and misting systems, to keep their cows comfortable and reduce heat stress ¹. These measures add to the operational expenses of dairy farms.
• Veterinary Care: Heat-stressed cows may require more veterinary attention, further increasing costs.

Threat to the Dairy Industry and Supply Chain

The cumulative effects of reduced milk output, lower quality, and increased operational costs pose a significant threat to Italy's entire dairy industry.

• Supply Chain Pressure: The reduced availability of high-quality milk puts pressure on the supply chain for various Italian cheeses ⁴.
• Economic Impact: The long-term sustainability of traditional cheese production, which is a vital part of Italy's cultural heritage and economy, is at risk ¹. This includes renowned cheeses like Parmigiano Reggiano, which has strict production standards that rely on specific milk characteristics.

In summary, extreme heat in Italy is creating a challenging environment for dairy farmers, leading to reduced and lower-quality milk production, increased operational costs, and an existential threat to the country's cherished cheese industry ¹⁴.