56312 20210121114544.0 sideral 91946 doi 10.23675/sjlas.v41i0.336 ART-2015-91946 eng (orcid)0000-0002-6106-2577 Maria, GA Universidad de Zaragoza Sheep as an experimental model: individual housing allowing visual, auditory, olfactory and tactile contact is not an obstacle for studies involving hormonal interrelationships 2015 Access copy available to the general public Unrestricted Thirty-two ewes were used to determine whether individual housing, allowing contact with neighbours, induces a stress response. Ewes were housed in individual pens designed to allow the ewes to see, hear, smell and touch adjacent animals, and were distributed into four groups (n=8/group): ewes with subcutaneous implants containing melatonin and oestradiol (M+E), melatonin (M), oestradiol (E) and non-implanted control ewes (C). Heart rate, stress indicators (plasma cortisol, glucose, lactate and creatine kinase (CK) concentrations) and luteinizing hormone (LH) concentrations were measured hourly and compared with the resting values (before and after pen housing). Heart rate increased significantly during the introduction into the pen (P<0.001) in all groups, in comparison with the resting values. No significant differences between groups were observed for cortisol concentrations, with the exception of the M group, which showed the highest response (P<0.001) when ewes were introduced into the pens. Lactate, CK and glucose changes in comparison with the resting values were similar between groups. LH concentrations during pen housing decreased significantly in all groups in comparison with resting values. In conclusion, individual confinement of sheep allowing visual, auditory, olfactory and tactile contact with their neighbouring animals was not an obstacle for investigating particular hormonal interrelationships with multiple sampling procedures. However further investigations are required to determine if this conclusion applies to other hormone systems in sheep. info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.0 2015 VETERINARY SCIENCES 137 / 138 = 0.993 2015 Q4 T3 0.101 2015 Animal Science and Zoology 2015 Q4 Veterinary (miscellaneous) 2015 Q4 Biochemistry, Genetics and Molecular Biology (miscellaneous) 2015 Q4 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Valares, JA (orcid)0000-0002-5399-8746 Forcada, F Universidad de Zaragoza (orcid)0000-0003-2827-3054 Abecia Martínez, José Alfonso Universidad de Zaragoza 2008 700 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Producción Animal 41 (2015), [9 pp.] Scand. j. lab. anim. sci. SCANDINAVIAN JOURNAL OF LABORATORY ANIMAL SCIENCE 0901-3393 http://www.sjlas.org/index.php/SJLAS/article/view/336 Texto completo de la revista 233716 http://zaguan.unizar.es/record/56312/files/texto_completo.pdf Versión publicada 113207 http://zaguan.unizar.es/record/56312/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:56312 articulos driver 2021-01-21-11:17:57 ARTICLE