000162618 001__ 162618
000162618 005__ 20251017144559.0
000162618 0247_ $$2doi$$a10.1016/j.anireprosci.2025.107969
000162618 0248_ $$2sideral$$a145167
000162618 037__ $$aART-2025-145167
000162618 041__ $$aeng
000162618 100__ $$aPérez-García, Elena
000162618 245__ $$aBehavioural study of rams subjected to photoperiod change: sexual, social, vital and group activities monitored by video
000162618 260__ $$c2025
000162618 5060_ $$aAccess copy available to the general public$$fUnrestricted
000162618 5203_ $$aThis study examined behavioural differences in rams exposed to artificial photoperiod stimulation, within the context of the ram effect. Eleven rams were divided into two groups: six received two months of long-day artificial photoperiod (16 h light/day), followed by one month of natural light (9 h light/day, February), while five control rams remained under natural lighting. At the end of the third month, three pens were established: one with photoperiod-stimulated rams (Group L, n = 3), one with control rams (Group C, n = 3), both with 30 ewes, and one mixed pen with both stimulated (Group L+C, n = 3) and control rams (Group C+L, n = 2) with 60 ewes. Behavioural observations were conducted over 11 consecutive days. A total of 26 behaviours-classified as sexual, vital, social, and grouping- were manually recorded and analysed using BORIS software. Sexual behaviours were the most frequent across all groups. Rams in Group L exhibited higher frequencies in all behaviour categories (p < 0.001). Vital activities had the longest durations, with Group C spending more time on these behaviours than others. In the mixed pen, both stimulated and control rams showed intermediate activity frequencies compared to their respective isolated counterparts (Group L: 36.7 % vs. L+C: 26.6 %; Group C: 17.6 % vs. C+L: 19.0 %; p > 0.001).
In conclusion, artificial photoperiod stimulation increased the frequency of key behavioural categories, especially sexual activity. Social interactions in mixed groups modified behaviour, suggesting mutual influence. BORIS software proved valuable for detailed behavioural analysis in ethological research.
000162618 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000162618 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000162618 700__ $$aNieto, Jaime
000162618 700__ $$0(orcid)0000-0003-2827-3054$$aAbecia, José Alfonso$$uUniversidad de Zaragoza
000162618 700__ $$aPlaza, Javier
000162618 700__ $$aPalacios, Carlos
000162618 7102_ $$12008$$2700$$aUniversidad de Zaragoza$$bDpto. Produc.Animal Cienc.Ali.$$cÁrea Producción Animal
000162618 773__ $$g280 (2025), 107969 [11 pp.]$$pAnim. reprod. sci.$$tAnimal Reproduction Science$$x0378-4320
000162618 8564_ $$s4157081$$uhttps://zaguan.unizar.es/record/162618/files/texto_completo.pdf$$yVersión publicada
000162618 8564_ $$s1850903$$uhttps://zaguan.unizar.es/record/162618/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000162618 909CO $$ooai:zaguan.unizar.es:162618$$particulos$$pdriver
000162618 951__ $$a2025-10-17-14:13:52
000162618 980__ $$aARTICLE