22 



The University of New Hampshire [Bulletin 338 



Figure 2 shows the variation of poultry house and plot house 

 humidity and temperature for the period January 16-22, 1939. This 

 illustrates to good effect the daily variations of these factors as well 

 as their related effect on the first new litter additions as noted on 

 Figure 1. Ohviously, with a poultry house humidity of more than 80 

 per cent, new additions of fresh, dry, absorptive litter will pick up 

 large amounts of moisture rapidly and then settle down to a uniform 

 rate of increase similar to the old litter. 



Daily averages of humidity and temperature of the ])oultry house 

 and plot house, together with barometric pressures, wind direction 

 and precipitation are presented in Figure 3. It is noted that both plot 

 house and poultry house humidities follow closely the outside atmos- 

 pheric conditions. On cloudy or rainy days they increase, whereas 

 on clear days the house humidity decreases. 



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io 37 



V POUUTHY noose TEMPEBATuet -. 

 "V ^ ^/plOT H005E TeMPEUATueE •' 



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MARCH 



Fig. 3. Barometric pressure, weather condition, temperature and 



HUAIIDITY OF PLOT HOUSE AND POULTRY PENS, MaRCII 15-31, 1939. 



