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Table 3 Effects of constant chronic heat stress on the performance and physiological responses in growing-finishing pigs

From: Alterations in intestinal microbiota composition coincide with impaired intestinal morphology and dysfunctional ileal immune response in growing-finishing pigs under constant chronic heat stress

Items Treatments P-value
TN HS PF
Initial body weight, kg 34.06 ± 0.80 33.99 ± 0.71 34.14 ± 0.90 0.992
Finial body weight, kg 38.92 ± 1.34a 33.29 ± 0.56b 33.18 ± 0.83b < 0.001
Average daily gain, kg/d 0.79 ± 0.04a −0.10 ± 0.06b − 0.14 ± 0.03b < 0.001
Average daily feed intake, kg/d 1.37 ± 0.08a 0.54 ± 0.04b 0.51 ± 0.00b < 0.001
Water intake, L/d 6.35 ± 0.36a 4.81 ± 0.26b 4.32 ± 0.28b < 0.001
Ratio of water to feed 4.76 ± 0.44b 9.50 ± 1.38a 8.46 ± 0.55a 0.002
Rectal temperature, °C 39.5 ± 0.1b 41.0 ± 0.1a 39.1 ± 0.1c < 0.001
Jugular temperature, °C 39.5 ± 0.1b 41.4 ± 0.1a 38.4 ± 0.1c < 0.001
Back temperature, °C 39.8 ± 0.1b 41.7 ± 0.1a 38.7 ± 0.1c < 0.001
Hind leg temperature, °C 39.9 ± 0.1b 41.9 ± 0.2a 38.8 ± 0.1c < 0.001
  1. TN, thermal neutral conditions (25 ± 1 °C); HS, heat stress conditions (35 ± 1 °C); PF, pair-fed with HS under TN conditions (25 ± 1 °C). Data were expressed as mean ± SEM (n = 8 for TN and PF, n = 7 for HS). Treatments with different superscript letters were significantly different at P < 0.05