COMPENDIUM, IEEC-2023   ( ISBN : 978-81-967860-4-5 )
Theme 2: Recent Trends in Agriculture and Resource Management

Solid waste disposal from livestock sector: Sustainable opportunity

Rajesh Kumar, Akshita Chadda, Rakhi Bharti and Akriti Anna

COVAS (Bihar Animal Sciences University, Patna), Kishanganj, Bihar


Livestock waste is a major source of greenhouse gases, pollution, pathogens, and odor. 40 % of global methane is produced by agriculture and livestock by-products followed by 18 % from waste disposal globally. Animal wastes that are taken out from the farm are classified into three types solid, slurry, and waste water. Improperly managed livestock wastes can lead to fecal contamination of waters receiving agricultural runoff. The danger to humans lies in the possibility of these fecal organisms entering water and food supplies. Solid wastes are treated by drying or composting. The most common environmental concern with animal wastes is that it affects the atmospheric air with offensive odours, and release of large quantities of CO2 and ammonia which might contribute to acid rain and the greenhouse effect. Dried wastes are used not only as fertilizer but also as fuel for combustion to obtain energy. There are a number of methods of livestock waste management which are biogas production, rotatory drum composting, vermicomposting, bio-dynamic fertilizer etc. Biogas is a clean environment-friendly fuel that can be obtained by anaerobic digestion of animal residues and domestic and farm wastes Livestock production should have a better integration within other agricultural and agri-food activities to have a better use of both its inputs and its outputs. Good quality organic fertilizer from animal waste provides an opportunity for the agricultural sector to reduce their reliance on chemical fertilizer which improves soil fertility and sustainability. The use of animal waste as input for bio-energy conversion processes can allow farmers to take advantage of new markets for waste products.

IEEC-2023 at RARI (SKNAU, Jobner), Jaipur, Rajasthan organised by Society of Extension Education, Agra, India