178 Fixed-time artificial insemination in virgin beef heifers using a seven-day progesterone-based protocol: gonadotrophin-releasing hormone versus oestradiol salts
L. B. Ferré A , B. Aguirregabiria B , N. Cerviño C , R. Bello D , M. Jensen A , C. Fresno E , M. E. Kjelland F G and M. Colazo HA National Institute of Agricultural Technology, Chacra Experimental Integrada Barrow (MDA-INTA), Tres Arroyos, Buenos Aires, Argentina
B Veterinary Consultant, Orense, Buenos Aires, Argentina
C CONICET/INTA, Tres Arroyos, Buenos Aires, Argentina
D National University of Tres de Febrero, Caseros, Buenos Aires, Argentina
E Health Sciences Research Center, Anáhuac University of México, Naucalpan de Juárez, México, México
F Conservation, Genetics & Biotech, LLC, Valley City, North Dakota, USA
G Mayville State University, Mayville, North Dakota, USA
H Livestock Research Section, Alberta Agriculture and Forestry, Edmonton, Alberta, Canada
Reproduction, Fertility and Development 35(2) 216-217 https://doi.org/10.1071/RDv35n2Ab178
Published: 5 December 2022
© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing on behalf of the IETS
