Introduction
Livestock farming shares a profound bidirectional relationship with climate change. While the livestock sector contributes approximately 12% of total anthropogenic greenhouse gas emissions globally, it simultaneously faces escalating vulnerability to extreme temperatures, shifting precipitation regimes, and emerging vector-borne pathogens.
Contributions of Livestock Farming to Climate Change
- Enteric Fermentation: Anaerobic microbial digestion in ruminants produces substantial quantities of methane (CH4), a short-lived climate pollutant with a warming potential over 28 times greater than carbon dioxide over a century.
- Manure Management: The anaerobic decomposition of livestock dung and slurry releases large volumes of methane and nitrous oxide (N2O), the latter being an exceptionally potent greenhouse gas.
- Feed Supply Chain Footprint: Intensive animal feed production drives land-use changes, tropical deforestation, and soil degradation, alongside emissions stemming from synthetic nitrogenous fertilizers used in feed cultivation.
Impacts of Climate Change on Livestock Systems
- Thermal Stress and Reduced Productivity: Elevated Temperature-Humidity Index (THI) values induce physiological heat stress in animals, depressing dry-matter intake and reducing milk production by 10% to 25%, while severely impairing reproductive and conception rates.
- Spreading Vector-Borne Pathogens: Rising temperatures and altered humidity broaden geographic habitats for vectors such as ticks and biting flies, triggering virulent outbreaks of diseases such as Lumpy Skin Disease (LSD) and hemoparasitic infections.
- Fodder and Water Insecurity: Recurrent droughts, erratic monsoons, and pasture degradation trigger acute shortages of green fodder and potable drinking water, destabilizing pastoral economies.
Measures to Enhance Sustainability and Resilience
- Dietary Manipulation and Feed Additives: Mainstreaming anti-methanogenic feed supplements, such as the Indian Council of Agricultural Research's (ICAR) 'Harit Dhara', suppresses protozoal methanogens and curtails enteric methane emissions by 17% to 20%.
- Circular Waste-to-Energy Models: Expanding bio-slurry production and compressed biogas units through initiatives like the GOBARdhan scheme converts livestock manure into clean energy and organic fertilizers.
- Promoting Climate-Resilient Indigenous Breeds: Conserving and selectively breeding thermo-tolerant, disease-resistant indigenous cattle and buffalo breeds (e.g., Gir, Tharparkar, Sahiwal) via the Rashtriya Gokul Mission enhances adaptation to thermal extremes.
- Adaptive Feed Infrastructure: Developing community fodder banks, adopting hydroponic fodder production, and integrating silvopastoral agroforestry buffer herds against climatic and seasonal shocks under the National Livestock Mission.
Conclusion
Transitioning towards low-carbon, climate-adapted livestock systems is imperative to secure smallholder and pastoral livelihoods, bolster food and nutritional security, and advance India's climate commitments under Sustainable Development Goal 13 (Climate Action).