1. Section 4 - Manure Production Colorado CNMP Workshop Manure & Wastewater Production Prepared by J.E. Andrews, PE, NRCS - Lakewood, CO

2. Section 4 - Manure Production Colorado CNMP Workshop OBJECTIVES To estimate the yearly production of: »Manure & Other Solid Wastes »Process Wastewater »Nitrogen & Phosphorus

3. Section 4 - Manure Production Colorado CNMP Workshop Information Needed Livestock Information  Type  Number  Average Weight  Confinement Period  Wastewater, bedding & other waste volumes Worksheet #1 a&b Tables 2, 3 & 4

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9. Section 4 - Manure Production Colorado CNMP Workshop Example Calculation Frank’s Feedlot 2,500 Head Beef Entry weight ~ 500 LB. Exit weight ~ 1,200 LB. On site 365 days per year Grain Diet

10. Section 4 - Manure Production Colorado CNMP Workshop Step 1 - Calculate Average weight * Enter in column (c) of Worksheet 1

11. Section 4 - Manure Production Colorado CNMP Workshop Step 2 - Calculate # Animal Units * Enter in column (d) of Worksheet 1.

12. Section 4 - Manure Production Colorado CNMP Workshop Step 3 - Get Manure Production Rate * Enter 8.7 LB. / day -AU in column (e) of Worksheet 1.

13. Section 4 - Manure Production Colorado CNMP Workshop Step 4 - Calculate Daily Manure Production * Enter in column (g) of Worksheet 1. # AUs x Production Rate = LB.s Manure / Day

14. Section 4 - Manure Production Colorado CNMP Workshop Step 5 - Calculate Annual Manure Production * Enter in column (h) of Worksheet 1.

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16. Section 4 - Manure Production Colorado CNMP Workshop Step 6 - Get Manure Analysis * Enter 23 LB.-N / ton in column (i) of Worksheet 1 ** Enter 24 LB.-P 2 O 5 / ton in column (j) of Worksheet 1

17. Section 4 - Manure Production Colorado CNMP Workshop Step 7 - Calculate Available Nutrients * Enter in column (k) of Worksheet 1 ** Enter in column (l) of Worksheet 1

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19. Section 4 - Manure Production Colorado CNMP Workshop Example Calculation Frank’s Dairy 300 Head Milk Cows @ 1,350 LB.s 90 Head Dry Cows @ 1,350 LB.s 40 Replacement Heifers @ 900 LB.s 2,000 gal. Wash water per day 200 LB.s hay bedding, 90 days per year

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21. Section 4 - Manure Production Colorado CNMP Workshop Example Calculation Frank’s Feeder Pigs 2,400 finishers Entry weight ~ 40 LB. Exit weight ~ 260LB. On site 365 days per year 3,000 gal day flushing water into earthen storage pond

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23. Section 4 - Manure Production Colorado CNMP Workshop