Livestock and the Environment

1. Livestock and the Environment

2. Environmental Problems of Livestock Production

3. 1. Changes in Livestock Production • Trend toward larger livestock operations • Use of large livestock confinement systems such as feedlots

4. 2. Changing Environment of Agriculture • Migration of city dwellers to agricultural areas. • Why? • Escape problems of city life • Attracted to recreational developments

5. Changing Environment of Agriculture, cont • Attitudes • Find odors offensive • Unaware of byproducts of livestock production

6. 3. Livestock Waste Disposal Concerns • Communities share the cost of waste disposal in cities • Cost of facility – several million dollars • Cost to individual in city - $100 to $200

7. Livestock Waste Disposal Concerns, cont • Individuals responsible for cost for livestock enterprises • 200,000 hens, 1,200 head of cattle in a feedlot, 10,500 hogs may produce as much waste as 20,000 people.

8. C. Agricultural Disposal Systems • Must be part of the total management plan • Must be affordable • Must meet the expectations of the non farming people who live nearby • Must meet environmental regulations

9. D. Federal Regulations • Federal Water Quality Act of 1965 • Refuse Act of 1899 • Solid Waste Disposal Act of 1965 • Federal Clean Air Act

10. E. State Regulations • Most states have some type of environmental protection agency • Enforce State & Federal regulations • Nuisance Laws • May include odors, dust, chemicals, water pollution, animal noises, carcass disposal, etc

11. F. Water Pollutants • Environmental Protection Agency (EPA) • EPA monitors • Biochemical Oxygen Demand (BOD) • Fecal Coliform • Fecal Streptococcus • Suspended Solids • Phosphorus • Ammonia

12. G. Handling Livestock Wastes • Objective is to control • Prevent surface & groundwater pollution • other Nuisances • Odors • Dust • Flies • Rodents

13. Handling Livestock Wastes, cont. • Amount of Manure Produced • Species • Age of Animal • Ration Fed

14. Handling Livestock Wastes, cont. • Fertilizer Usage– Nutrient Content Factors • Length of time in storage • Method of treatment • Amount and type of bedding used • Amount of dilution by water entering the system

15. F. Manure Handling Systems • Factors to consider • EPA Regulations • Kind of Animal Being Raised • Kind of Housing and Management • Size and Type of Operation • Climate • Characteristics of Operation

16. Manure Handling Systems, cont. • Classification of Facilities • Confined • Open Lot • Lot and Shelter • Enclosed Shelter • Unconfined • Pasture • Range

17. Manure Handling Systems, cont. • Types of Systems • Liquid • Pits • Lagoon • Storage Basins • Solid

18. G. Determining the Amount of Livestock Waste to Apply on the Land

19. Determining the Amount of Livestock Waste to Apply on the Land • Agronomic Nitrogen Rate • Available Nitrogen per unit of yield necessary to produce a given crop • Varies with species • Varies with ration fed • Varies with method of collection and storage • Phosphorus Requirements

20. H. Disposing of Manure • Spread on land • All solid systems • All liquid systems except lagoons • Valuable as fertilizers

21. Disposing of Manure, cont. • Environmental Considerations • Must be incorporated or injected in the soils • Do not apply to frozen or snow cover land • Do not apply immediately before or after a rainstorm to to saturated land

22. . Disposing of Manure, cont. • Do not apply to grass waterways • Do not apply within 200 feet of surface waters or within 150 feet of a well • Reduce the amount applied if there is a high water table present or if soil is highly permeable

23. I. Preventing Feedlot Runoff • Diversion – prevent surface water from entering • Drainage – channel runoff from feedlot

24. Preventing Feedlot Runoff, cont • Debris basins – catch run off from pens • Holding ponds – temporary storage for runoff • Disposal – collect and use for irrigation or allow to evaporate

25. J. Gases and Odors from Livestock Wastes • Caused by anaerobic bacteria breaking down the organic components • Occurs when no Oxygen is present

26. Gases and Odors from Livestock Wastes, cont • Gases dangerous to people and livestock in poorly ventilated or confinement areas • Odors may cause neighbors to take legal action against the farmer

27. Gases and Odors from Livestock Wastes, cont • Control Methods • Reduced by mixing air with manure • Mix manure in soil as soon as possible after hauling/spreading

28. Gases and Odors from Livestock Wastes, cont • Chemical and Bacterial culture • Masking agents • Cover up odors • Counteractants • Attempt to neutralize odors

29. Gases and Odors from Livestock Wastes, cont Chemical and Bacterial culture, cont • Deodorants • Chemicals that kill the bacteria that cause odor • Digestive deodorants • Create a digestive process to eliminate odor

30. K. Disposal of Dead Animals • Responsibility of owner • Many states require within 24 to 48 hrs • Done so as not to cause health hazard • Diseases may spread to other animals/humans • Treat any dead animal as though diseased • Eliminate environmental threats

31. Disposal of Dead Animals, cont • Transport in a covered, metal, leak proof vehicle • Approved Methods • Licensed disposal plant • Burying • Disposal pits • Burning • Composting

32. Agriculture Waste Management System • Putting it all together • Production – amount and nature of waste generated • Collection – initial capture and gathering of the waste • Transfer – movement of waste through the system • Storage – temporary containment of waste • Treatment – function designed to reduce pollution potential • Utilization – reusing or recycling waste