Climate Vulnerability of India's Dairy Sector: Heatwaves and the 20% Decline in Milk Yield

The recent record-breaking heatwaves across Northern India, particularly in the dairy hubs of Punjab and Haryana, have triggered a significant crisis in the livestock sector, with milk production plummeting by an estimated 15-20%. This decline is not merely a seasonal fluctuation but a stark indicator of how extreme geophysical phenomena are reshaping the viability of India’s primary sector industries.

The drop in yield is primarily attributed to 'heat stress' in high-yielding cattle breeds. High ambient temperatures disrupt the thermoregulation of these animals, leading to reduced feed intake, altered metabolic rates, and diminished reproductive efficiency. Furthermore, the heatwave has severely impacted the availability of green fodder. Stunted crop growth and water scarcity have forced farmers to rely on dry fodder, which lacks the nutritional density required for optimal milk production. This dual blow—physiological stress on animals and nutritional deficits—has created a supply-side shock in the dairy market.

From a socio-economic perspective, this trend is alarming. In states where dairy contributes significantly to the agricultural Gross Value Added (GVA), such a sharp decline directly translates to a loss of rural income and a potential spike in retail milk prices, contributing to food inflation. It also exposes the limitations of current livestock management practices in the face of accelerating climate change. The vulnerability of the dairy sector highlights the urgent need to integrate climate adaptation strategies into national policies. This includes promoting heat-tolerant indigenous breeds, improving cattle shed designs for better ventilation, and ensuring a robust supply chain for silage and nutritious feed during peak summer months.