Figure 3.
The effect of environmental air temperature on cloacal temperature at the 17th wk of age. Different symbols represent conditions for chicks raised through week 6 (Table 1). Linear and quadratic regression models between cloacal temperature and environmental air temperature, and the standard error of regression was 0.16°C and 0.11°C for linear and quadratic regressions, respectively. Abbreviation: Tair = environmental air temperature; all coefficients included in the equations are significant at P < 0.001.