Vol. 47 No. 4 (2009)

Articles

• Selectivity of herbicides and weed control in the establishment of Brachiaria brizantha-Leucaena leucocephala mixtures

  Fernando Rivas Pantoja, Javier E. Castillo Huchim, Luis Ortega Reyes

  339 a 355

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• Typology of sheep farms in the sierra norte region, Puebla State, Mexico

  Ignacio Vázquez Martínez, Samuel Vargas López, José Luis Zaragoza Ramírez, Ángel Bustamante González, Francisco Calderón Sánchez, Joel Rojas Álvarez, Miguel Ángel Casiano Ventura

  357 a 369

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• Genotyping methods for Mycobacterium bovis. Review

  Rosalinda Acosta Salinas, Ciro Estrada Chávez, Feliciano Milián Suazo

  389 a 412

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• Forage yield, chemical composition and in vitro gas production of four corn hybrids preserved as silage or hay

  Martina Antolín Domínguez, Manuel González Ronquillo, Susana Goñi Cedeño, Ignacio Arturo Domínguez Vara, Cynthia Ariciaga González

  413 a 423

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• Frequency and molecular identification of Cryptosporidium spp in confined suckling dairy calves in Aguascalientes, Mexico

  César Castillo García, Carlos Cruz Vázquez, Rubén López Revilla, Mireya Sánchez Garza, Rodrigo Rosario Cruz, Irene Vitela Mendoza, Leticia Medina Esparza

  425 a 434

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• Effect of Bos taurus genes percentage on milk yield in crossbreed cows in the humid tropics of Mexico

  Rufino López Ordaz, Rafael García Carreón, José Guadalupe García Muñiz, Rodolfo Ramírez Valverde

  435 a 448

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