Quintero, J., Olguín, H., Quezada, A., Janacua, H., Rivas, R. and Macías, U. (2016) “Effect of hCG application on day 12 post-mating on the reproductive efficiency and plasmatic concentrations of progesterone in hair ewes”, Cuban Journal of Agricultural Science, 49(4). Available at: https://www.cjascience.com/index.php/CJAS/article/view/491 (Accessed: 28 April 2024).