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J. Ly
Instituto de Ciencia Animal, San José de las Lajas, Cuba
Cuba
R. Arias
Instituto de Investigaciones Porcinas. Punta Brava, La Habana, Cuba
Cuba
Lázara Ayala
Instituto de Ciencia Animal, San José de las Lajas, Cuba
Cuba
F. Grageola
Unidad Académica de Medicina Veterinaria y Zootecnia. Universidad Autónoma de Nayarit. Compostela, Nayarit, México
Mexico
Martha Durán
Sociedad Cubana de Porcicultores, Guantánamo, Cuba
Cuba
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