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Frequency of genetic variations associated with milk yield and composition in seven Zebu breeds

Published online by Cambridge University Press:  27 June 2025

Gaspar Manuel Parra-Bracamonte Open the ORCID record for Gaspar Manuel Parra-Bracamonte [Opens in a new window] ,
José Fernando Vázquez-Armijo Open the ORCID record for José Fernando Vázquez-Armijo [Opens in a new window] ,
Xochitl Fabiola De la Rosa-Reyna Open the ORCID record for Xochitl Fabiola De la Rosa-Reyna [Opens in a new window] ,
Juan Gabriel Magaña-Monforte Open the ORCID record for Juan Gabriel Magaña-Monforte [Opens in a new window] ,
Juan Carlos Martínez-González Open the ORCID record for Juan Carlos Martínez-González [Opens in a new window] ,
Nicolás Lopez-Villalobos Open the ORCID record for Nicolás Lopez-Villalobos [Opens in a new window] ,
Jessica Beatriz Herrera-Ojeda Open the ORCID record for Jessica Beatriz Herrera-Ojeda [Opens in a new window]  and
Victor I. Pacheco-Contreras
Gaspar Manuel Parra-Bracamonte*
Affiliation:
Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Reynosa, Tamaulipas, México
José Fernando Vázquez-Armijo
Affiliation:
Centro Universitario Temascaltepec, Universidad Autónoma del Estado de México, Temascaltepec, State of Mexico, México
Xochitl Fabiola De la Rosa-Reyna
Affiliation:
Centro de Biotecnología Genómica, Instituto Politécnico Nacional, Reynosa, Tamaulipas, México
Juan Gabriel Magaña-Monforte
Affiliation:
Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Yucatán, México
Juan Carlos Martínez-González
Affiliation:
Facultad de Ingeniería y Ciencias, Universidad Autónoma de Tamaulipas, Ciudad Victoria, Tamaulipas, México
Nicolás Lopez-Villalobos
Affiliation:
Centro Universitario Temascaltepec, Universidad Autónoma del Estado de México, Temascaltepec, State of Mexico, México School of Agriculture and Environment, Massey University, Palmerston North, New Zealand
Jessica Beatriz Herrera-Ojeda
Affiliation:
Departamento de Ingenierías, Instituto Tecnológico del Valle de Morelia, Instituto Tecnológico Nacional, Morelia, Michoacán, México
Victor I. Pacheco-Contreras
Affiliation:
Instituto Tecnológico Superior de Tepeaca, Puebla, México
*
Corresponding author: Gaspar Manuel Parra-Bracamonte; Email: gparra@ipn.mx
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Abstract

Maternal ability (milk and environment) in beef cattle is one of the most important traits influencing weaning weight of the calf, but amount and composition of milk produced by the dam is difficult to measure. The assessment of polymorphisms of candidate genes related to milk composition could indirectly enlighten this perspective. In the present study, the frequency of αs1-casein 1175AG and g26181A>G; κ-casein 13068 (CSN3 AB1) and 13104 (CSN3 AB2) loci, β-lactoglobulin variants 3984GA and 5263CT, Diacyl glycerol transferase K232A, and Stearoyl CoA desaturase A702G and A762G polymorphisms were estimated in Gray and Red Brahman, Nellore, Guzerat, Gir, Indubrazil, and Sardo Negro registered sires from Mexico. Most of the documented favourable alleles were found in low frequency in most of the evaluated breeds, except for β-lactoglobulin, in which the presence of favourable alleles might represent an opportunity for marker-assisted introgression. The relevance of the findings for each variation and implications from the outcomes are discussed.

Keywords

candidate genesmaternal abilitymilk fatmilk proteinpolymorphisms

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Type
Animal Research Paper
Information
The Journal of Agricultural Science , Volume 163 , Issue 4 , August 2025 , pp. 472 - 479
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© The Author(s), 2025. Published by Cambridge University Press

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