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Table 3 The effect of TC (42 °C for 6 h; posthatch day 28) during 4 time terminals (at the beginning and after 1, 3 and 5 h of TC) on plasma protein pattern and cortisol of broiler chicks subjected to different TM protocols at ED 12–18 (n = 5)

From: Biochemical and molecular investigation of thermal manipulation protocols during broiler embryogenesis and subsequent thermal challenge

Parameters Groups Treatments
Control TM1 TM2 TM3 TM4
Total proteins TN 28.4 ± 0.3 aw 37.5 ± 1.1 bw 36.0 ± 1.3 bw 35.0 ± 1.4 bw 37.1 ± 1.4 bw
TC1 21.9 ± 0.1 ax 27.2 ± 1.0 bx 27.5 ± 0.9 bx 26.6 ± 1.1 bx 26.8 ± 1.6 bx
TC3 22.7 ± 0.2 ax 27.4 ± 1.1 bx 27.5 ± 1.1 bx 26.7 ± 1.0 bx 27.5 ± 1.2 bx
TC5 22.6 ± 1.5 ax 29.6 ± 0.6 bx 28.0 ± 1.0 bx 28.1 ± 1.0 bx 28.2 ± 0.8 bx
Albumin TN 17.5 ± 0.6 aw 20.2 ± 1.1 bw 20.2 ± 1.0 bw 20.3 ± 1.2 bw 20.3 ± 1.1 bw
TC1 12.0 ± 0.2 ax 15.5 ± 0.5 bx 15.4 ± 0.3 bx 14.0 ± 0.7 bx 14.8 ± 0.4 bx
TC3 12.1 ± 0.2 ax 15.2 ± 0.8 bx 15.9 ± 0.7 bx 14.7 ± 1.0 bx 14.9 ± 1.0 bx
TC5 12.4 ± 0.1 ax 15.1 ± 0.7 bx 14.7 ± 0.4 bx 14.6 ± 1.7 bx 15.1 ± 2.3 bx
Corticosterone TN 0.21 ± 0.03aw 0.21 ± 0.02 aw 0.22 ± 0.01 aw 0.22 ± 0.03 aw 0.20 ± 0.02 aw
TC1 0.21 ± 0.00 aw 0.20 ± 0.01 aw 0.21 ± 0.01 aw 0.22 ± 0.05 aw 0.21 ± 0.03 aw
TC3 0.21 ± 0.01 aw 0.21 ± 0.11 aw 0.21 ± 0.01 aw 0.21 ± 0.12 aw 0.21 ± 0.01 aw
TC5 0.22 ± 0.05 aw 0.21 ± 0.05 aw 0.20 ± 0.01 aw 0.21 ± 0.05 aw 0.22 ± 0.01 aw
  1. Control 37.8 °C, TM 1 Thermal manipulation at 38.5 °C for 18 h, TM 2 Thermal manipulation at 39 °C for 18 h, TM 3 Thermal manipulation at 39.5 °C for 18 h, TM 4 Thermal manipulation at 40 °C for 18 h, TC Thermal challenged
  2. a–b within rows, means ± SD with different superscripts differ significantly (P < 0.05)
  3. w-x Between naïve and TC chicks within a parameter, means ± SD with different superscripts differ significantly (P < 0.05)