000170942 001__ 170942
000170942 005__ 20260430151735.0
000170942 0247_ $$2doi$$a10.1007/s00484-026-03199-0
000170942 0248_ $$2sideral$$a148999
000170942 037__ $$aART-2026-148999
000170942 041__ $$aeng
000170942 100__ $$0(orcid)0000-0003-2827-3054$$aAbecia, José-Alfonso$$uUniversidad de Zaragoza
000170942 245__ $$aBiologger-based monitoring of body temperature, heart rate, and heart rate variability in Lidia cattle: relationships with environmental conditions
000170942 260__ $$c2026
000170942 5203_ $$aAn understanding of how Lidia cattle (Bos taurus) physiologically adapt to natural environmental conditions is essential for assessing their welfare and resilience in extensive systems. This study documented the circadian and short-term responses of Lidia cows to natural summer conditions based on data from subcutaneous biologgers that continuously recorded body temperature (T), heart rate (HR), and HR variability (HRV). Four cows were monitored for 10 consecutive days, and ambient T and relative humidity were recorded simultaneously, which were used to calculate the Temperature–Humidity Index (THI). Both T and HR exhibited clear diurnal rhythms, increasing during the day and peaking in the evening, but HRV indices (SDNN and RMSSD) were highest at night, which reflected highest parasympathetic activity at night. Cosinor analyses confirmed strong rhythmicity in body T (robustness = 0.84; circadian index > 3) and moderate rhythmicity in HR and HRV. Physiological responses to heat stress exhibited distinct temporal delays; i.e., HR increased approximately 3 h after increases in THI, body T peaked after about 4.5 h, and HRV reached its minimum 3.5–4 h later. Those results indicate that autonomic and thermal adjustments unfolded gradually and with measurable lags following changes in environmental conditions. Despite pronounced daily variations in ambient conditions, Lidia cattle maintained stable body T rhythms and clear circadian organization, which reflected their high thermotolerance and capacity to adjust to Mediterranean summer environments.
000170942 536__ $$9info:eu-repo/grantAgreement/ES/UZ/IUCA
000170942 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000170942 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000170942 700__ $$aIglesias, Pablo
000170942 700__ $$aPlaza, Javier
000170942 700__ $$aNieto, Jaime
000170942 700__ $$aMorales, Luis
000170942 700__ $$aPalacios, Carlos
000170942 700__ $$aAlonso, Marta Elena
000170942 700__ $$aLomillos, Juan Manuel
000170942 7102_ $$12008$$2700$$aUniversidad de Zaragoza$$bDpto. Produc.Animal Cienc.Ali.$$cÁrea Producción Animal
000170942 773__ $$g70, 4 (2026), 127 [12 pp.]$$pInt. j. biometeorol.$$tINTERNATIONAL JOURNAL OF BIOMETEOROLOGY$$x0020-7128
000170942 8564_ $$s2513767$$uhttps://zaguan.unizar.es/record/170942/files/texto_completo.pdf$$yVersión publicada$$zinfo:eu-repo/date/embargoEnd/2027-04-15
000170942 8564_ $$s2349395$$uhttps://zaguan.unizar.es/record/170942/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada$$zinfo:eu-repo/date/embargoEnd/2027-04-15
000170942 909CO $$ooai:zaguan.unizar.es:170942$$particulos$$pdriver
000170942 951__ $$a2026-04-30-13:57:34
000170942 980__ $$aARTICLE