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Table 1 Plasma thyroxine (T4) and 3,5,3′-triiodothyronine (T3) levels in HG and LG chickens

From: Transcriptional profiling and pathway analysis reveal differences in pituitary gland function, morphology, and vascularization in chickens genetically selected for high or low body weight

  Week 1 Week 3 Week 5 Week 7 bP-values
Line x Age Line Age
aT4 (ng/ml)      0.0268 0.1154 0.0151
 HG 24.9 ± 0.9 28.7 ± 1.2 27.9 ± 1.9 32.1 ± 0.5*    
 LG 23.2 ± 1.4 29.9 ± 1.1 29.0 ± 2.2 24.2 ± 2.3*    
aT3 (ng/ml)      0.4427 0.0035 0.0027
 HG 3.0 ± 0.2 2.7 ± 0.3 2.1 ± 0.1 2.2 ± 0.1    
 LG 2.3 ± 0.2 2.2 ± 0.1 1.9 ± 0.2 1.7 ± 0.2    
  1. aValues are mean ± SEM for n = 4 birds per line
  2. bWhen the two-way ANOVA demonstrated a significant line-by-age interaction (P ≤ 0.05), the presence of an asterisk (*) denotes a significant difference between the lines at the indicated age (P ≤ 0.05)