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

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

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

Section 4 - Manure Production Colorado CNMP Workshop

Section 4 - Manure Production Colorado CNMP Workshop

Section 4 - Manure Production Colorado CNMP Workshop

Section 4 - Manure Production Colorado CNMP Workshop

Section 4 - Manure Production Colorado CNMP Workshop

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

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

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

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.

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

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

Section 4 - Manure Production Colorado CNMP Workshop

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

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

Section 4 - Manure Production Colorado CNMP Workshop

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

Section 4 - Manure Production Colorado CNMP Workshop

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

Section 4 - Manure Production Colorado CNMP Workshop

Section 4 - Manure Production Colorado CNMP Workshop