Vol. 47 No. 2 (2009)

Articles

• Total aflatoxins in cows feed and AFM1 in milk in dairy herds from Jalisco state, Mexico

  Waldina Reyes Velázquez, Severiano Patricio Martínez, Víctor Hugo Isaías Espinosa, Martha Adriana Nathal Vera, Ernesto Waldina Reyes Velázquez, Severiano Patricio Martínez, Víctor Hugo Isaías Espinosa, Martha Adriana Nathal Vera, Ernesto De Lucas Pala

  223 a 230

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• Optimal biological digestible lysine requirements for first-cycle laying hens

  Ana Luisa Cevallos Gordon, Benjamín Fuente Martínez, Arturo Cortés Cuevas, Ernesto Ávila González

  215 a 222

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• Herbage accumulation, growth and structural characteristics of Mombasa grass (Panicum maximum Jacq.) harvested at different cutting intervals

  Omar Ramírez Reynoso, Alfonso Hernández Garay, Sila Carneiro da Silva, Jorge Pérez Pérez, Javier Francisco Enríquez Quiroz, Adrián Raymundo Quero Carrillo, José Guadalupe Herrera Haro, Antonio Cervantes Núñez

  203 a 213

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• Seasonal herbage yield and growth dynamics of perennial ryegrass, grazed by sheep at different frequencies and intensities

  Santiago Garduño Velázquez, Jorge Pérez Pérez, Alfonso Hernández Garay, José G. Herrera Haro, Pedro A. Martínez Hernández, Bertín M. Joaquín Torres

  189 a 202

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• Seasonal growth analysis of alfalfa-orchard grass swards

  Job Zaragoza Esparza, Alfonso Hernández Garay, Jorge Pérez Pérez, José G. Herrera Haro, Fernando Osnaya Gallardo, Pedro A. Martínez Hernández, Sergio S. González Muñoz, Adrián R. Quero Carrillo

  173 a 178

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• Impacts of technological level on production efficiency and economic variables in pork farms in the States of Guanajuato, Jalisco, Sonora and Yucatan, méxico

  Juan de Jesús Nava Navarrete, Rafael Trueta Santiago, Bernardo Finck Vite, Bárbara Barranco Villagrán, Edith Osorio Herrera, Jorge Lecumberri López

  157 a 172

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• (co)variance components of open days in Santa Gertrudis cattle

  Danilo Guerra Iglesias, José Luis Espinoza Villavicencio, Alejandro Palacios Espinosa, Dianelys González Peña, Felipe Rodríguez Almeida, Ariel Guillén Trujillo

  145 a 155

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• Use of satellite images to assess forage production in the rangelands of Zacatecas

  Guillermo Medina García, Ramón Gutiérrez Luna, Francisco G. Echavarría Chairez, Mario D. Amador Ramírez, J. Ariel Ruiz Corral

  135 a 144

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• Ingestive behavior of adult Zebu cattle grazing leucaena at two heights

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

  125 a 134

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