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Abstract

Background: A concern for breeders is whether an animal ranking based on genetic evaluations is similar to that obtained from show-ring judging. Objective: to determine the association between rankings for Braunvieh (BR) and Brown Swiss (BS) cattle of Mexico based on show-ring judging and their...

Author(s)
Ramírez-Valverde, R.; Ramírez-Valverde, G.; Núñez-Domínguez, R.; Delgadillo-Zapata, R. A.; Hernández-León, M.
Publisher
Universidad de Antioquia, Medellín, Colombia
Citation
Revista Colombiana de Ciencias Pecuarias, 2016, 29, 1, pp 25-32
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

The objectives were to estimate variance components, and direct (h2) and maternal (m2) heritability in the growth of Tropicarne cattle based on a random regression model using B-Splines for random effects modeling. Information from 12 890 monthly weightings of 1787 calves, from birth to 24 months...

Author(s)
Domínguez-Viveros, J.; Rodríguez-Almeida, F. A.; Nuñez-Domínguez, R.; Ramírez-Valverde, R.; Ortega-Gutiérrez, J. A.; Ruiz-Flores, A.
Publisher
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autonoma de Yucatan, Yucatan, Mexico
Citation
Tropical and Subtropical Agroecosystems, 2015, 18, 1, pp 27-32
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
AbstractFull Text

Three random regression test day models, using Wilmink's function, first and second order Legendre polynomials, were used to fit lactation curves of the Tropical Milking Criollo (CLT) cattle. 9968 test-day records from 299 CLT cows located in the tropical low lands of the Gulf Coast of Mexico were...

Author(s)
Santellano-Estrada, E.; Alba, J. de; Chang, Y. M.; Gianola, D.; Ramírez-Valverde, R.; Becerril-Pérez, C. M.
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 16-17
Abstract

The objective of this study was to characterize and compare predicted transmitted abilities of Brown Swiss and Jersey cattle used in Mexico (MX), and those obtained in the United States (US) and Canada (CA). The database used in this study came from imported American and Canadian Brown Swiss and...

Author(s)
Ramírez-Valverde, R.; Núñez-Domínguez, R.; Palacios-Jiménez, A. L.; Jiménez-Carrasco, J. S.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Livestock Science, 2014, 167, pp 51-57
Abstract

A precise quantification of maternal influence and genetic correlation between direct and maternal effects (rd-m) is important for the genetic evaluation of weaning weight (PD) in cattle. The aim of this study was to evaluate the effect of including sire × environment interaction (environments:...

Author(s)
Gallegos-Ramírez, R.; Ramírez-Valverde, R.; Núñez-Domínguez, R.; Ruíz-Flores, A.; Rodríguez-Almeida, F. A.
Publisher
Colegio de Postgraduados, Montecillo, Mexico
Citation
Agrociencia (Montecillo), 2011, 45, 6, pp 687-697
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

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