000149074 001__ 149074
000149074 005__ 20250124153131.0
000149074 0247_ $$2doi$$a10.1016/j.smallrumres.2024.107429
000149074 0248_ $$2sideral$$a142155
000149074 037__ $$aART-2025-142155
000149074 041__ $$aeng
000149074 100__ $$0(orcid)0000-0003-2827-3054$$aAbecia, José A.$$uUniversidad de Zaragoza
000149074 245__ $$aBody temperature and heart rate variability, and their circadian rhythms in sheep as measured by biologgers
000149074 260__ $$c2025
000149074 5060_ $$aAccess copy available to the general public$$fUnrestricted
000149074 5203_ $$aHeart rate (HR) variability (HRV) reflects the balance between the autonomic nervous system's sympathetic and parasympathetic branches, which regulate stress and relaxation. Wearable sensors record HR and body temperature (BT), to provide data that informed decisions can be made from on animal management and welfare. The purpose of this study was to investigate daily changes in BT and HRV, recorded by subcutaneous biologgers; specifically, to quantify the 24-hour circadian rhythm in BT (°C), HR (bpm), the Standard Deviation of the R-R intervals (SDNN), and the Root Mean Square of Successive Differences (RMSSD) (ms). Five ewes were implanted with a subcutaneous biologger, configured to collect data every 5 min for 7 d. Mean ( ± S.E.) BT (38.06 ± 0.01), HR (111.14 ± 1.68), SDNN (34.35 ± 2.90), and RMSSD (47.95 ± 4.21) were calculated. BT and HR were highest in the day (day: 38.15 ± 0.01 and 120.71 ± 0.43; night: 37.98 ± 0.01 and 102.47 ± 0.43; P < 0.001), and SDNN (day: 29.30 ± 0.87; night: 37.16 ± 0.67) and RMSSD (day: 39.01 ± 1.17; night: 53.53 ± 0.94) were highest at night (P < 0.001). BT and HR were positively correlated (P < 0.01), but both negatively correlated (P < 0.01) with SDNN and RMSSD. BT, HR, SDNN, and RMSSD presented a 24-h circadian rhythm, with acrophases (peak activity period) for BT at 1457 h and at 1223 h for HR, but those of SDNN and RMSSD were at 0350 h and 0327 h, respectively. In conclusion, biologgers detected the diurnal rhythmicity in BT and HRV in sheep, providing an option to use these physiological measures to assess an animal's health and welfare.
000149074 536__ $$9info:eu-repo/grantAgreement/ES/DGA/BIOFITER$$9info:eu-repo/grantAgreement/ES/UZ/IUCA
000149074 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000149074 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000149074 700__ $$aCanto, Francisco
000149074 700__ $$aPlaza, Javier
000149074 700__ $$aNieto, Jaime
000149074 700__ $$aPalacios, Carlos
000149074 7102_ $$12008$$2700$$aUniversidad de Zaragoza$$bDpto. Produc.Animal Cienc.Ali.$$cÁrea Producción Animal
000149074 773__ $$g243 (2025), 107429 [7 pp.]$$pSmall rumin. res.$$tSmall Ruminant Research$$x0921-4488
000149074 8564_ $$s5116307$$uhttps://zaguan.unizar.es/record/149074/files/texto_completo.pdf$$yVersión publicada
000149074 8564_ $$s2692636$$uhttps://zaguan.unizar.es/record/149074/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000149074 909CO $$ooai:zaguan.unizar.es:149074$$particulos$$pdriver
000149074 951__ $$a2025-01-24-14:50:07
000149074 980__ $$aARTICLE