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Abstract

The objective of this study was to evaluate genetic diversity of seven Mexican beef cattle populations, using pedigree analyses. The analyses were carried out with the Endog software, using information of the registered animals on national herd-book of each breed. The size of the populations...

Author(s)
Ramírez-Valverde, R.; Delgadillo-Zapata, A. R.; Domínguez-Viveros, J.; Hidalgo-Moreno, J. Á.; Núñez-Domínguez, R.; Rodríguez-Almeida, F. A.; Reyes-Quiroz, C.; García-Muñiz, J. G.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Revista Mexicana de Ciencias Pecuarias, 2018, 9, 4, pp 614-635
Abstract

In México, there are no studies whose purpose has been characterizing the production units with registered cattle herds. These studies are important because they allow designing successful genetic improvement programs and the transfer of their results to commercial producers. The objective of this...

Author(s)
Larios-Sarabia, N.; Ramírez-Valverde, R.; Núñez-Domínguez, R.; García-Muñiz, J. G.; Ruíz-Flores, A.
Publisher
Agricultura, Sociedad y Desarrollo, Montecillo, Mexico
Citation
Agricultura, Sociedad y Desarrollo, 2011, 8, 2, pp 229-247
Abstract

The objective of this study was to determine the magnitude of genotype by climate interaction (GCI) in the national genetic evaluation for weaning (WW) and yearling (YW) weights of Mexican Braunvieh cattle. The numbers of performance records and animals in the pedigree were 12,364 and 25,173 for...

Author(s)
Saavedra-Jiménez, L. A.; Ramírez-Valverde, R.; Núñez-Domínguez, R.; García-Muñiz, J. G.; Lopez-Villalobos, N.; Ruíz-Flores, A.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2013, 45, 7, pp 1489-1494
AbstractFull Text

The objective was to determine the optimum percentage of Bos taurus (BT) genes for traits related to lactation performance of crossbred cows. Lactations (n=1,220) from 507 cows with percentage of BT genes ranging from zero to 87.5, were collected from a commercial farm in tropical Mexico. Variables ...

Author(s)
García-Muñiz, J. G.; García-Carreón, R.; López-Ordaz, R.; Ramírez-Valverde, R.; Núñez-Domínguez, R.
Publisher
Instituto Prociência, Minas Gerais, Brazil
Citation
Proceedings of the 8th World Congress on Genetics Applied to Livestock Production, Belo Horizonte, Minas Gerais, Brazil, 13-18 August, 2006, 2006, pp 01-62
Abstract

The purpose of this study was to evaluate the stability of results from genetic evaluations for growth traits in Mexican populations of Tropicarne and Braunvieh cattle. The analysed information came from the genetic evaluations for Tropicarne cattle in 2002 and 2003 and for Braunvieh in 2003 and...

Author(s)
Ramírez-Valverde, R.; Núñez-Domínguez, R.; Ruíz-Flores, A.; García-Muñiz, J. G.; Domínguez-Viveros, J.; Hernández-Ramos, H.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Técnica Pecuaria en México, 2008, 46, 1, pp 13-24
Abstract

The inclusion of the inbreeding coefficient (F) into the models to predict breeding values (BV) for Jersey (J) and Brown Swiss (BS) Mexican registered dairy cattle was studied. The conventional model including the fixed effect of herd-year-season, and the genetic additive and permanent...

Author(s)
Ruíz-Flores, A.; García-Munguía, C. A.; Núñez-Domínguez, R.; Ramírez-Valverde, R.; López-Ordaz, R.; García-Muñiz, J. G.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Revista Mexicana de Ciencias Pecuarias, 2011, 2, 4, pp 381-391
Abstract

The objective of this study was to evaluate the effect of environmental factors and to determine the optimum proportion of Bos taurus (BT) genes on milk yield (MY) and reproductive traits of % Holstein-Friesian (H) × 1/4 zebu (Z), 3H1Z; 3/4 Swiss (S) × 1/4 Z, 3S1Z; 1/2 H × 1/2 Z, HZ and 1/2 S × 1/2 ...

Author(s)
López-Ordaz, R.; Vite-Cristóbal, C.; Garcia-Muñiz, J. G.; Martínez-Hernández, P. A.
Publisher
Instituto de Zootecnia, Facultad de Veterinaria, Córdoba, Spain
Citation
Archivos de Zootecnia, 2009, 58, 224, pp 683-694
Abstract

Milk production from grazing, although moderate, is an attractive option because of low capital investment and operation costs. This study characterized a non-seasonal grazing system in the Mexican central plateau, evaluating environmental effects on variables related to milk yield with 120...

Author(s)
Lemus-Ramírez, V.; Guevara-Escobar, A.; García-Muñiz, J. G.
Publisher
Colegio de Postgraduados, Montecillo, Mexico
Citation
Agrociencia (Montecillo), 2008, 42, 7, pp 753-765
Abstract

The objective of this study was to evaluate the genetic and environmental factors influencing the milk yield (MY) and reproductive traits of 1/2 Holstein × 1/2 zebu (HZ), 1/2 Brown Swiss (S) × 1/2 Z (SZ), and 3/4 S × 1/4 Z (3S1Z) crossbred cows. The lactation records (n=90) of 30 crossbred cows, 10 ...

Author(s)
Vite-Cristóbal, C.; López-Ordaz, R.; García-Muñiz, J. G.; Ramírez-Valverde, R.; Ruiz-Flores, A.; López-Ordaz, R.
Publisher
Revista Veterinaria-Mexico, Facultad de Medicina Veterinaria y Zootecnia, Mexico City, Mexico
Citation
Veterinaria México, 2007, 38, 1, pp 63-79
Abstract

The effects of accumulated milk yield from calving to day 50 of lactation (MY50), number (NC) and season (SC) of calving on the intervals from calving to the appearance of the first dominant follicle (DF), the appearance of the first corpus luteum (CL), the time to completion of uterine involution...

Author(s)
Jara Aguilar, D.; Rangel Santos, R.; García-Muñiz, J. G.
Publisher
Facultad de Ciencias Veterinarias, Universidad del Zulia, Maracaibo, Venezuela
Citation
Revista Cientifica, Facultad de Ciencias Veterinarias, Universidad del Zulia, 2004, 14, 6, pp 548-558

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