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- W4289100853 abstract "Abstract Substantial economic losses in animal agriculture result from animals experiencing heat stress (HS). Pigs are especially susceptible to HS, resulting in reductions in growth, altered body composition, and compromised substrate metabolism. In this study, an artificial high-intensity sweetener and capsaicin (CAPS-SUC; Pancosma, Switzerland) were supplemented in combination to mitigate the adverse effects of HS on pig performance. Forty cross-bred barrows (16.2 ± 6 kg) were assigned to one of five treatments: thermal neutral controls (TN) (22 ± 1.2 °C; 38%–73% relative humidity) with ad libitum feed, HS conditions with ad libitum feed with (HS+) or without (HS−) supplementation, and pair-fed to HS with (PF+) or without supplementation (PF−). Pigs in heat-stressed treatments were exposed to a cyclical environmental temperature of 12 h at 35 ± 1.2 °C with 27%–45% relative humidity and 12 h at 30 ± 1.1 °C with 24%–35% relative humidity for 21 d. Supplementation (0.1 g/kg feed) began 7 d before and persisted through the duration of environmental or dietary treatments (HS/PF), which lasted for 21 d. Rectal temperatures and respiration rates (RR; breaths/minute) were recorded thrice daily, and feed intake (FI) was recorded daily. Before the start and at the termination of environmental treatments (HS/PF), a muscle biopsy of the longissimus dorsi was taken for metabolic analyses. Blood samples were collected weekly, and animals were weighed every 3 d during treatment. Core temperature (TN 39.2 ± 0.02 °C, HS− 39.6 ± 0.02 °C, and HS+ 39.6 ± 0.02 °C, P < 0.001) and RR (P < 0.001) were increased in both HS− and HS+ groups, but no difference was detected between HS− and HS+. PF− pigs exhibited reduced core temperature (39.1 ± 0.02 °C, P < 0.001), which was restored in PF+ pigs (39.3 ± 0.02 °C) to match TN. Weight gain and feed efficiency were reduced in PF− pigs (P < 0.05) but not in the PF+ or the HS− or HS+ groups. Metabolic flexibility was decreased in the HS− group (−48.4%, P < 0.05) but maintained in the HS+ group. CAPS-SUC did not influence core temperature or weight gain in HS pigs but did restore core temperature, weight gain, and feed efficiency in supplemented PF pigs. In addition, supplementation restored metabolic flexibility during HS and improved weight gain and feed efficiency during PF, highlighting CAPS-SUC’s therapeutic metabolic effects." @default.
- W4289100853 created "2022-08-01" @default.
- W4289100853 creator A5009390536 @default.
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- W4289100853 creator A5077744463 @default.
- W4289100853 creator A5085739519 @default.
- W4289100853 date "2022-08-01" @default.
- W4289100853 modified "2023-09-26" @default.
- W4289100853 title "Supplementation with artificial sweetener and capsaicin alters metabolic flexibility and performance in heat-stressed and feed-restricted pigs" @default.
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