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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
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
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 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

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