Paw Q Story 10/9/ Steps to Drier Houses & Better Paw Quality. Step 1 Manage Moisture

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1 10 Steps to Drier Houses & Better Paw Quality Jess Campbell & Jim Donald - Auburn University National Poultry Technology Center 1 Paw Q Story 2 Step 1 Manage Moisture Summer Control Winter Control Maintain 50-70% RH Get A Meter Litter Thickness & Quality 1

2 High Moisture Indicators Condensation Dank sour smell Ceiling dripping 5 Primary Moisture Removal Tool Effective Ventilation 2

3 Secondary Moisture Removal Tool tractor How Much Moisture 2:1 FC 4:1 WR 1, Gallon Drums Starts With Good Bedding Manage Moisture Between Flocks Manage Drinkers And Pressure Exhaust Must Carry Out Moisture Must Get Moisture Into House Air If We Don t Ventilate Efficiently We Will Fail Water Usage (24,000 Broilers) GAL/DAY WEEK 1 = 259 WEEK 2 = 475 WEEK 3 = 821 WEEK 4 = 1,210 WEEK 5 = 1,584 WEEK 6 = 1,872 WEEK 7 = 1,987 80% ,267 1,498 1,590 3

4 Thermal Image of Litter Problems with Drinkers Don t Help Step 2 Ventilation Setup Inlet Opening Pressure Vent Door Management 4

5 Proper Management - Understanding How to Achieve Our Goal How many do I need Should I use them all When do I close some When do I open some How far should vents be open to get good throw Sidewall Ceiling What are typical winter SP ranges Proper Inlet Opening = Effective Ventilation Are We Ventilating? Static Temp Air Mixing Moisture Litter Quality Must Have the 3 Proper Inlet Video 5

6 Poor Inlet Opening = Poor Ventilation Are We Ventilating? Static Good? Temp Good? Air Mixing Poor Moisture Removal? Litter Quality Poor Where is the Air Landing? Poor Inlet Video Step 3 Stop Air Infiltration House Tightness Temperature Litter House Tightness Test Locate Leaks 6

7 Air Infiltration Video Conduct A Tightness Test Close Up The House Turn on 20,000 cfm 2-36 Fans or 1-48 Fan 1 cfm/sqft in larger houses Measure Static Pressure With Magnahelic Gauge <0.10 in high ceilings <0.15 in low ceilings What Does This Tell Us? 7

8 Leakage Area vs. Static Pressure OLD RETROFIT NEW 0.01 = 60ft = 45ft = 35ft = 28ft = 25ft = 21ft = 20ft = 18ft = 17ft = 16ft = 15ft = 14ft = 13ft = 12ft = 11ft = 11ft = 10ft = 10ft = 9ft = 9ft = 8ft = 8ft = 7ft = 7ft = 6ft = 6ft = 5ft = 5ft = 4ft = 4ft 2 VERY LEAKY TIGHT VERY TIGHT ORIGINAL WORK BY UGA MIKE CZARICK Step 4 Use Stir Fans Reduce Stratification Floor Uniformity Moisture Removal Improved Litter Q Improved Perf Improved Paws Heat Stratification Video 8

9 Temperature Stratification 25 Basket Fan Smoke Video x 500 w/ Basket Fans 40 x 500 = 20,000 ft 2 x 9.5 = 190,000 ft 3 190,000 ft 3 x 10% = 19,000 ft 3 of air Brooding Chamber Off End 19,000 ft 3 / 2,500 cfm fan = 7.6 fans or 8 Alternate Spacing/Arrangement Acceptable 9

10 The Effect of Recirculation Fans in a Tight House Step 5 Seal Tunnel Curtains Brooding Leaks Heaters Floor Temps Uniformity Step 6 Seal Fan Shutters Off-End Fan Shutters Plastic Bonnets Curtains 10

11 Fan and Shutter Covers Damaged Fan Shutter ORIGINAL WORK BY UGA MIKE CZARICK 33 11

12 Step 7 Calculate Fan Run Times Calculate Adjust Monitor Increase Revisit Go to poultryhouse.com for runtime calculator More Water = More Ventilation Bird age/weeks Average gallons/day Minimum cfm/bird , , , , Example Per-Bird Ventilation Rates For Moisture Removal Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week cfm 0.25 cfm 0.35 cfm 0.50 cfm 0.65 cfm 0.70 cfm 0.80 cfm 0.90 cfm 24,000 Birds 2 Weeks Old Need.25 Cfm Per Bird 24,000 X.25 = 6,000 Cfm Using 2-36 Inch Fans 6,000/18,000 = 33% On Time 100 ON /200 OFF Using 3-36 Inch Fans 6,000/27,000=22% On Time 60 ON /240 OFF Be Observant Add More If Needed See Newsletter 12

13 Step 8 Check Ceiling Insulation Cellulose Fiberglass Shifting Adding Heat Loss (2,000 x 60) / 1 = 120,000 BTU s/hr Lost (18,000 x 60) / 10 = 108,000 BTU s/hr Lost 13

14 R-19 Fiberglass Roll Insulation Blown Fiberglass Insulation 41 Step 9 Off End Management Brooding Humidity Vents Fans Heaters Stir Fans Curtain 14

15 43 Step 10 Leave Heat On Brooding Bird Heat Turn Out Background Heat Monitor RH & Adjust Vent Door Management House Tightness Stir Fans Ceiling Insulation Water Lines Summary More Hands-on Training 45 15

16 Thank You Questions & Comments? Jess Campbell, Poultry Housing Specialist or Inlet Management -TEMP CONTROL BY AIR CHANGE & BLENDING Air Mixing Temperature Moisture Removal Fuel Use 48 16

17 Measuring Relative Humidity Ounces of Water in 1,000ft 3 of Air at Different Temperatures and RH Air Temperature RH 30 F 40 F 50 F 60 F 70 F 80 F 90 F 10% % % % % % % % % % CFM Per Bird Days Age Total CFM On 5-min Timer with Fan Power , min (1-48 ) , min (1-48 ) , min ( ) , min ( ) , min (2-48 ) , min (2-48 ) , min (2-48 ) , min (2-48 ) 17

18 Timer Adjustments for Conditions (based on using a five-minute timer) For slight ammonia add 15 seconds For heavy ammonia add 30 seconds For high moisture add 15 seconds For dust subtract 15 seconds 18

19 DRY LITTER 19