131368 20240212141706.0 doi 10.1016/j.anireprosci.2020.106551 sideral 119106 ART-2020-119106 eng Macías, Ángel Universidad de Zaragoza Cervical artificial insemination in sheep: sperm volume and concentration using an antiretrograde flow device 2020 Access copy available to the general public Unrestricted There has been development of an antiretrograde flow device (DARIO), for sheep cervical artificial insemination (CAI). There, however, needs to be optimization of sperm volume and concentration of insemination doses when the DARIO is used for CAI. Objectives were to compare fertility rates (proportion of ewes lambing as a result of CAI) when there was use of the DARIO for CAI: two sperm volumes containing equal numbers of spermatozoa: 0.25 mL of 1, 600 × 106 spermatozoa/mL and 0.50 mL of 800 × 106 spermatozoa/mL (Test 1 group), and two sperm volumes with a different number of spermatozoa/AI dose: 0.25 mL and 0.50 mL of 1, 600 × 106 spermatozoa/mL (Test 2 group). There were 335 ewes from seven farms assigned to 60 batches (equally divided into a Control and Test 1 group). For the Test 2 group, 462 ewes from nine farms were assigned to 88 batches (equally proportioned into Control group and Test 2 groups). For the Test 1 group, proportion of ewes lambing as a result of CAI were 0.701 ± 0.2679 and 0.595 ± 0.2393 for the Control and Test 1 groups, respectively (P = 0.163). For the Test 2 group, proportions of ewes lambing were 0.550 ± 0.2598 and 0.658 ± 0.2412 for the Control and Test 2 group, respectively (P = 0.041). An inclusion of a larger number of spermatozoa per insemination in a 0.50 mL dose volume resulted improved proportion of ewes lambing as a result of CAI when there was used of the DARIO. info:eu-repo/grantAgreement/ES/DGA/INNOVA-A1-034-15 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 2.145 2020 AGRICULTURE, DAIRY & ANIMAL SCIENCE 23 / 63 = 0.365 2020 Q2 T2 VETERINARY SCIENCES 43 / 146 = 0.295 2020 Q2 T1 REPRODUCTIVE BIOLOGY 26 / 30 = 0.867 2020 Q4 T3 0.572 2020 Animal Science and Zoology 2020 Q2 Medicine (miscellaneous) 2020 Q2 Food Animals 2020 Q2 Endocrinology 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Martín, Elena Laviña, Adolfo Ferrer, Luis Miguel Universidad de Zaragoza (orcid)0000-0003-0042-8800 Lidón, Iván Universidad de Zaragoza (orcid)0000-0003-2558-982X Rebollar, Rubén Universidad de Zaragoza (orcid)0000-0002-7891-609X Tejedor, María Teresa Universidad de Zaragoza (orcid)0000-0001-5026-5144 1001 420 Universidad de Zaragoza Dpto. Anatom.,Embri.Genét.Ani. Área Genética 5002 720 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Proyectos de Ingeniería 1009 617 Universidad de Zaragoza Dpto. Patología Animal Área Medicina y Cirugía Animal 221 (2020), 106551 [7 pp.] Anim. reprod. sci. Animal Reproduction Science 0378-4320 258918 http://zaguan.unizar.es/record/131368/files/texto_completo.pdf Versión publicada 913902 http://zaguan.unizar.es/record/131368/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:131368 articulos driver 2024-02-12-14:15:18 ARTICLE