Residual Feed Intake and Rumen Metabolism in Growing Pelibuey Sheep
Carlos Arce-Recinos,
Nadia Florencia Ojeda-Robertos,
Ricardo Alfonso Garcia-Herrera,
Jesús Alberto Ramos-Juarez,
Ángel Trinidad Piñeiro-Vázquez,
Jorge Rodolfo Canul-Solís,
Luis Enrique Castillo-Sanchez,
Fernando Casanova-Lugo,
Einar Vargas-Bello-Pérez,
Alfonso Juventino Chay-Canul
Affiliations
Carlos Arce-Recinos
División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa, Km 25, R/A, La Huasteca 2ª Sección, Villahermosa 86280, Tabasco, Mexico
Nadia Florencia Ojeda-Robertos
División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa, Km 25, R/A, La Huasteca 2ª Sección, Villahermosa 86280, Tabasco, Mexico
Ricardo Alfonso Garcia-Herrera
División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa, Km 25, R/A, La Huasteca 2ª Sección, Villahermosa 86280, Tabasco, Mexico
Jesús Alberto Ramos-Juarez
Colegio de Postgraduados, Campus Tabasco, Periférico Carlos A. Molina, Km 3.5, Carretera Cárdenas-Huimanguillo, H. Cárdenas 86500, Tabasco, Mexico
Ángel Trinidad Piñeiro-Vázquez
Tecnológico Nacional de México, Instituto Tecnológico de Conkal, Avenida Tecnológico s/n, Conkal 97345, Yucatán, Mexico
Jorge Rodolfo Canul-Solís
Tecnológico Nacional de México, Instituto Tecnológico de Tizimín, Tizimín 97702, Yucatán, Mexico
Luis Enrique Castillo-Sanchez
Tecnológico Nacional de México, Instituto Tecnológico de Tizimín, Tizimín 97702, Yucatán, Mexico
Fernando Casanova-Lugo
Tecnológico Nacional de Mexico, Instituto Tecnológico de la Zona Maya, Othón P. Blanco 77965, Quintana Roo, Mexico
Einar Vargas-Bello-Pérez
Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Grønnegårdsvej 3, DK-1870 Frederiksberg C, Denmark
Alfonso Juventino Chay-Canul
División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Villahermosa-Teapa, Km 25, R/A, La Huasteca 2ª Sección, Villahermosa 86280, Tabasco, Mexico
This study was carried out to evaluate the residual feed intake (RFI), volatile fatty acid (VFA) production and enteric methane (CH4) from growing Pelibuey sheep. In this case, 12 non-castrated Pelibuey with an initial average live weight (LW) of 21.17 ± 3.87 kg and an age of 3 months, were housed in individual pens and fed a basal diet with 16% of crude protein and 11 MJ ME for 45 days. Dry matter intake (DMI) was measured and the daily weight gain (DWG) was calculated using a linear regression between the LW and experimental period. Mean metabolic live weight (LW0.75) was calculated. RFI was determined by linear regression with DWG and LW0.75 as independent variables. Lambs were classified as low, medium, and high RFI. Feed efficiency was determined as DWG/DMI. For determining rumen pH, ammonia nitrogen concentration NH3-N), and VFA, ruminal fluid was obtained using an esophageal probe on day 40. Feed intake of low RFI lambs was approximately 16% lower (p 4 production per kilogram of metabolic weight, was 17% lower (p < 0.05).
