Environmental temperature, space allowance, and regrouping: Additive effects of multiple concurrent stressors in growing pigs
نویسندگان
چکیده
Materials and methods: Two hundred and fifty-six growing pigs (Yorkshire × Hampshire or purebred Duroc barrows and gilts, initial body weight 34.7 ± 0.5 kg) were used in a randomized block design with a 2 × 2 × 2 factorial arrangement of treatments to determine effects on hematologic and behavioral measures of environmental temperature (constant-thermoneutral at 24 ̊C or cycling-high from 28 ̊C to 34 ̊C), space allowance (0.56 or 0.25 m2 per pig), and regrouping (static, ie, not regrouped, or ture treatment were less active than those on the constant-thermoneutral treatment. Standing activity was higher and lying activity was lower as number of stressors increased (P < .05).
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