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Abstract

The genetic parameters for Brahman cattle under the tropical conditions of Mexico are scarce. Therefore, heritabilities, additive direct and maternal correlations, and genetic correlations for birth weight (BW) and 205 days adjusted weaning weight (WW205) were estimated in four Brahman cattle herds ...

Author(s)
Estrada-León, R. J.; Magaña-Monforte, J. G.; Segura-Correa, J. C.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2014, 46, 5, pp 771-776
Abstract

Variance components and genetic parameters were estimated for total milk production at first lactation (MP1), milk yield adjusted to 305 d and adult equivalent at the first lactation (MP1std), total milk production of the first five lactations (MP5) and milk yield adjusted to 305 d and mature...

Author(s)
Toledo Alvarado, H. O.; Ruiz López, F. de J.; Vásquez Peláez, C. G.; Berruecos Villalobos, J. M.; Elzo, M. A.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Revista Mexicana de Ciencias Pecuarias, 2014, 5, 4, pp 443-457
Abstract

In order to estimate the genetic parameters and correlations between total lactation milk yield and growth traits in a multiracial population of dual purpose cattle in tropical environments of Mexico, genetic variances and covariances were estimated between total milk yield during the first (PTL1...

Author(s)
Román-Ponce, S. I.; Ruiz-López, F. J.; Romano-Muñoz, J. L.; Vásquez-Peláez, C. G.; Vega-Murillo, V. E.; Román-Ponce, H.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Revista Mexicana de Ciencias Pecuarias, 2018, 9, 2, pp 316-327
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

The aim of this study was to estimate genetic parameters for growth traits in Mexican Nellore cattle. A univariate animal model was used to estimate (co)variance components and genetic parameters. The traits evaluated were birth weight (BW), weaning weight (WW), and yearling weight (YW). Models...

Author(s)
Martínez-González, J. C.; García-Esquivel, F. J.; Parra-Bracamonte, G. M.; Castillo-Juárez, H.; Cienfuegos-Rivas, E. G.
Publisher
Springer, Amsterdam, The Netherlands
Citation
Tropical Animal Health and Production, 2010, 42, 5, pp 887-892
Abstract

These proceedings presents abstracts of papers from the XLI Meeting of the Mexican Association of Animal Production and Food Security, AC and VII National Meeting on Agriculture and Pasture Systems, held in Merida, Yucatan, Mexico last 02 to 04 Jul 2014. Topics of papers focused on agro and...

Author(s)
Martínez-Loperena, R.; Ayala-Burgos, A.; Solorio-Sánchez, J.; Castelán-Ortega, O.
Publisher
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autonoma de Yucatan, Yucatan, Mexico
Citation
Tropical and Subtropical Agroecosystems, 2014, 17, 2, pp 325-435
Abstract

Heritabilities and genetic correlations between birth weight (n=13,741), adjusted 240-day weaning weight (WW, n=8,806) and age at first calving (AFC, n=3,955) of Brown Swiss cattle in Mexico were estimated. Data from 91 herds located in 19 of 32 states of Mexico from 1982 to 2006 were provided by...

Author(s)
Segura-Correa, J. C.; Chin-Colli, R. C.; Magaña-Monforte, J. G.; Núñez-Domínguez, R.
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2012, 44, 2, pp 337-341
Abstract

Data recorded from 1997 to 2009 by the Charolais-Charbray Herd Book of Mexico were analyzed with six different animal models to estimate genetic parameters for birth weight (n=105,599), weaning weight adjusted to 205 d (n=89,111) and yearling weight adjusted to 365 days (n=55,284). Model 1 included ...

Author(s)
Ríos Utrera, Á.; Martínez Velázquez, G.; Vega Murillo, V. E.; Montaño Bermúdez, M.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Revista Mexicana de Ciencias Pecuarias, 2012, 3, 3, pp 275-290
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 objective of the present study was to estimate (co)variance components, heritabilities and genetic and phenotypic correlations for yearling weight (YW), scrotal circumference (SC) and frame score (FS) of Simmental and Simbrah young bulls from Mexico. All traits were adjusted to 365 d according...

Author(s)
Torres-Vázquez, J. A.; Manzanilla Pech, C. I. V.; Borrayo Zepeda, A.; Ríos-Utrera, Á.; Vega-Murillo, V. E.; Martínez-Velázquez, G.; Baeza Rodríguez, J. J.; Montaño-Bermúdez, M.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Revista Mexicana de Ciencias Pecuarias, 2012, 3, 3, pp 291-298

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