121203 20230914083659.0 doi 10.31893/jabb.22031 sideral 131668 ART-2022-131668 eng Abecia, José Alfonso Universidad de Zaragoza (orcid)0000-0003-2827-3054 Polymorphisms of the melatonin receptor 1A (MTNR1A) gene affect the sexual performance of Rasa Aragonesa rams without changing their social dominance 2022 Access copy available to the general public Unrestricted This study aimed to investigate whether a specific genotype of the MTNR1A gene influences social dominance and reproductive performance in rams. Thirty-one rams were genotyped for Rsal and Mnll polymorphism of the gene: CC (n=19), CT (n=5), and TT (n=7), and GG (n=20), GA (n=6), or AA (n=5), respectively. Maintenance (standing still, lying down, drinking, feeding, walking, or stereotyping) and social behavior (agonistic and antagonistic interactions among rams) were recorded by direct observations involving instantaneous scan sampling and continuous behavior sampling. For each animal, his Index of Success (IS) and Displacement (ID) were calculated. One week after the social-behavioral observations, rams were tested in individual serving-capacity tests involving three ewes that were synchronized into estrus in a 15-m2 pen for 20 min. The genotypes did not differ in the number of aggressions they performed (CC: 88.95±12.85; CT: 106.20±21.00; TT: 70.43±8.50; GG: 76.05±8.72; GA: 119.00±16.16; AA: 95.80±36.39) or received (CC:75.79±5.82; CT:92.40±8.68; TT: 86.14±15.05; GG: 79.25±6.58; GA: 86.83±11.51; AA: 79.80±12.74), and their active and passive behaviors were similar. The genotypes did not differ significantly in IS or ID, and the proportion of rams in each success category was similar among groups. For the Rsal and Mnll polymorphism, TT and GG rams were responsible for 54% and 56% of recorded sexual events (P < 0.05), respectively. Results of this study confirm that the best sexual performance of rams was among those that carried certain genotypes of the MTNR1A gene. Still, it was not correlated with differences in social dominance. info:eu-repo/grantAgreement/ES/MICINN/PID2020-113239RB-I00 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 0.351 2022 Animal Science and Zoology 2022 Q2 Ecology 2022 Q3 Atmospheric Science 2022 Q3 2.8 2022 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Heredia, Andrea Pérez Pe, Rosaura Universidad de Zaragoza (orcid)0000-0002-2312-6402 Casao, Adriana Universidad de Zaragoza (orcid)0000-0003-1997-4262 Carcangiu, Vincenzo Mura, Maria Consuelo Lama, Genaro Miranda de la Universidad de Zaragoza (orcid)0000-0002-6848-1010 1002 819 Universidad de Zaragoza Dpto. Bioq.Biolog.Mol. Celular Área Zoología 2008 700 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Producción Animal 10, 4 (2022), 2231 [7 pp] J. Anim. Behav. Biometeorol. Journal of Animal Behaviour and Biometeorology 2318-1265 936856 http://zaguan.unizar.es/record/121203/files/texto_completo.pdf Versión publicada 2931715 http://zaguan.unizar.es/record/121203/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:121203 articulos driver 2023-09-13-14:22:40 ARTICLE