Table 3. Effect of cooling systems on respiration rate and body temperature in 35 days old gestating sows exposed to heat stress during early pregnant stage1)

Items HS(n = 13) AC(n = 13) WC(n = 13) SEM
Respiration rate (breaths/min) 102.08a 35.54b 98.38ab 5.573
Rectal temperature (°C) 38.53a 38.23b 38.33ab 0.038
Skin temperature (°C)
 Ear 38.77a 35.00b 38.60a 0.306
 Neck 38.98a 33.81c 38.18b 0.381
 Rump 38.82a 35.03b 38.77a 0.299
Animals were subjected to heat stress for early stage (0 to 35 d) of gestation.
Means with different superscript in same row differ below 0.05 of p-value.
HS, without any cooling; AC, air cooling system; WC, water-drip cooling system.