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Effect of the climatic environment on the skin (a) and rectal (b) temperatures of mixed parity sows from gestation to lactation (LSmeans ± SEM). From day 9 to 109 of pregnancy, sows (n = 24) were subjected to one of two environments: thermoneutral (PTN; 18 to 24 °C) and heat-stressed (PHS; 28 to 34 °C). During the whole lactation period, sows were kept at 25 °C. a,bWithin each day, LSmeans with different superscript letters differ according to the experimental group (P < 0.05).
