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Table 6 Thermoregulatory response of sows fed high crude protein (HCP; 192.4 g/kg crude protein) and low crude protein (LCP; 140.0 g/kg crude protein) diets and exposed to thermal neutral (TN) and heat stress (HS) conditionsa

From: Effect of dietary near ideal amino acid profile on heat production of lactating sows exposed to thermal neutral and heat stress conditions

Item  HCP LCP
  TN HS SEM P-value TN HS SEM P-value
No. of sows 6 6 6 6
Rectal body temp, °C
 07:00 38.93 39.11 0.16 0.427 38.99 39.02 0.16 0.906
 13:00 39.23 39.82 0.16 0.012 39.28 39.65 0.16 0.098
 19:00 39.32 40.03 0.16 0.003 39.33 39.68* 0.16 0.115
Respiration rate, #/min
 07:00 25 43 2 < 0.001 25 37* 2 < 0.001
 13:00 30 76 2 < 0.001 30 74 2 < 0.001
 19:00 28 55 2 < 0.001 29 51 2 < 0.001
  1. aData are least squares means
  2. *Diets differed within the same environment (P < 0.05)
  3. Diets tended to differ within the same environment (P = 0.085)