Hsp70 response in pigs is affected by their Halothane genotypes after heat stress

 Heat shock protein ([Hsp70]) and ionized calcium ([Ca2+]) concentrations were examined in pigs’ blood at different times after heat stress (HS). Pigs were from different halothane genotypes (HAL) (NN, n=7; Nn, n=5; nn, n=6). [Hsp70] increased significantly from 1–2 h after HS and [Ca2+] decreased significantly from HS-end in NN and Nn. No significant differences in [Hsp70] and [Ca2+] were detected among NN and Nn. [Hsp70] and [Ca2+] in nn did not vary significantly from baseline values. [Hsp70] was significantly higher in NN and Nn than in nn. Briefly, HAL affected [Hsp70] after HS in pigs probably via a disordered [Ca2+] regulation.