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Chay-Canul, A.; Ramon-Ugalde, J. .; Arcos-Álvarez, D. N.; Zamora-Bustillos, R.; Garcia-Herrera, R. A. .; Macias-Cruz, U. .; Piñeiro-Vazquez, A. T. Effect of Maternal Intrinsic Factors on Productivity and Efficiency at Weaning in Commercial Flock of Pelibuey Ewes in the Tropic of Tabasco, Mexico: Effect of Maternal Intrinsic Factors on Productivity and Efficiency at Weaning in Commercial Flock of Pelibuey Ewes in the Tropic of Tabasco, Mexico. AP 2021.