Genetic and productive background of Criollo cattle in Argentina, Mexico,
Uruguay and the United States
2022 Armstrong

Breeds of Study

Species, Clades, and their Relationship to Paraphyly
and Monophyly: Examples from the Pantherophis
obsoletus Complex
2022 Hillis

The Genetic Origins Of Nguni Cattle From Southern Africa 2022

Genetic parameters and trends for growth traits in Blanco Orejinegro cattle. 2020
Ramírez Toro, Burgos Paz, Elzo MA, Martínez Sarmiento, Cerón-Muñoz

The Genetic Ancestry of American Creole Cattle inferred from uniparental and autosomal genetic markers 2019
Catarina Ginja, Luis Telo Gama, Oscar Cortés, Inmaculada Martin Burriel,
Jose Luis Vega-Pla, Cecilia Penedo, Phil Sponenberg, Javier Cañón, Arianne Sanz,
Andrea Alves do Egito, Luz Angela Alvarez, Guillermo Giovambattista, Saif Agha,
Andrés Rogberg-Muñoz, Maria Aparecida Cassiano Lara, BioBovis Consortium, Juan Vicente Delgado, & Amparo Martinez

Criollo cattle: Heritage Genetics for Arid Landscapes 2015
Dean M. Anderson, Rick E. Estell, Alfredo L. Gonzalez, Andres F. Cibils, and L. Allen Torell

A Genomic Approach for Distinguishing
between Recent and Ancient Admixture
as Applied to Cattle
Emily Jane McTavish and David M. Hillis

Proceedings, 10th World Congress of Genetics Applied to Livestock Production

Relationships between adaptive and productive traits in cattle, goats and sheep in tropical environments 2014
H.M. Burrow and J.M. Henshall

Analysis of conservation priorities of Ibeoamerican cattle based on autosomal microsatellite markers 2013
Ginja et al.

Genetic diversity analysis of the Uruguayan Creole cattle breed using
microsatellites and mtDNA markers
2013 Armstrong

Decoding the Genetic History of the Texas Longhorn – a summary 2013
Emily Jane McTavish published her DNA research in the Proceedings of the National Acedemy of Sciences.

Emily’s supporting data

Working under the supervision of Alfred W. Roark Centennial Professor David Hillis, Ph.D., we funded two summer research fellowships for Emily Jane McTavish, Graduate student in Ecology Evolution Behavior, Section of Integrative Biology at the University of Texas at Austin, to analyze 50K chip data from Texas Longhorns and compare that to 50,000 alleles mapped from 57 other breeds of cattle in effort to identify breed-specific markers. Their research continued with a training grant to help discover the origins and admixture of the Texas Longhorn. Emily integrated data across platforms (Illumina 50K data with Bovine Genome Project HapMap data with USDA MARC data). She and Dr. Hillis collaborated with Jared E. Decker, Postdoctoral Fellow University of Missouri; Robert D. Schnabel, Research Assistant Professor-Division of Animal Sciences, University of Missouri; Jerry Taylor, Professor and Wurdack Chair of Animal Genomics, University of Missouri; Dr. Amparo Martínez Martínez, University of Córdoba, Spain, working in cooperation with SERGA, the Spanish Society for the Conservation of Animal Genetic Resources; and Mike Heaton, Ph.D. with the USDA Meat Animal Research Center also contributed data to the research project. Using the data analysis software STRUCTURE, Emily identified breed specific SNPs that place various breeds along a linear scale. She developed analysis software that interprets Illumina 6K chip data to calculate percent Indicus in individuals for comparison with populations to determine breed.

New World cattle show ancestry from multiple independent domestication events 2012
McTavish, Decker, Schnabel, Taylor & Hillis

Genetic Footprints of Iberian Cattle in America 500 Years after the Arrival of Columbus 2012
Amparo M. Martínez, Luis T. Gama, Javier Cañón, Catarina Ginja, Juan V. Delgado,
Susana Dunner, Vincenzo Landi, Inmaculada Martín-Burriel, M. Cecilia T. Penedo,
Clementina Rodellar, Jose Luis Vega-Pla, Atzel Acosta, Luz A. Álvarez, Esperanza Camacho,
Oscar Cortés, Jose R. Marques, Roberto Martínez, Ruben D. Martínez, Lilia Melucci,
Guillermo MartEinez-Velázquez, Jaime E. Muñoz, Alicia Postiglioni, Jorge Quiroz,
Philip Sponenberg, Odalys Uffo, Axel Villalobos, Delsito Zambrano, Pilar Zaragoza

pdf version

An Account of the Taxonomy of
North American Wolves From
Morphological and Genetic Analyses
Steven R. Fain; U.S. Fish and Wildlife Service

Genetic differentiation among geographically isolated populations of Criollo cattle and their divergence from other Bos taurus breeds 2012
N. D. Russell, J. Rios, G. Erosa, M. D. Remmenga and D. E. Hawkins

Predicting breed composition using breed frequencies of 50,000 markers from the U.S. Meat Animal Research Center 2,000 bull project 2011
L. A. Kuehn, J. W. Keele, G. L. Bennett, T. G. McDaneld, T. P. L. Smith,
W. M. Snelling, T. S. Sonstegard, and R. M. Thallman

Genetic diversity, structure, and breed relationships in Iberian cattle 2011
I Martín-Burriel, C Rodellar, J Cañón, O Cortés, S Dunner, V Landi, A Martínez-Martínez, L T Gama, C Ginja, M C T Penedo, A Sanz, P Zaragoza, J V Delgado

Relative breed contributions to neutral genetic diversity of a comprehensive representation of Iberian native cattle 2011
J. Cañón, D. García, J. V. Delgado, S. Dunner, L. Telo da Gama, V. Landi,
I. Martín-Burriel, A. Martínez, C. Penedo, C. Rodellar, P. Zaragoza, and C. Ginja

Genetic characterization of Latin-American Creole cattle using microsatellite markers 2011
Genetic characterization of Latin-American Creole cattle using
microsatellite markers
J. V. Delgado1, A. M. Martínez, A. Acosta, L. A. Álvarez, E. Armstrong, E. Camacho, J. Cañón, O. Cortees, S. Dunner, V. Landi, J. R. Marques, I. Martı ́n-Burriel, O. R. Martí́nez,
R. D. Martínez, L. Melucci, J. E. Muñoz, M. C. T. Penedo, A. Postiglioni, J. Quiróz, C. Rodellar, P. Sponenberg, O. Uffo, R. Ulloa-Arvizu, J. L. Vega-Pla, A. Villalobos,
D. Zambrano, P. Zaragoza, L. T. Gama and C. Ginja

Characteristics of Reyna Creole Cattle: An Endangered Breed in Nicaragua 2010
R. Corrales, B. Malmfors, A. Näsholm, A. Lundén, and J. Philipsson

Bovine Genome Project 2010
We contributed longhorn DNA samples to be included as part of the Bovine Genome Project conducted by the Bovine Genome Lab at the Human Genome Sequencing Center at Baylor College of Medicine.

We also participated in a comparative project begun by Dr. Gama from Portugal and Dr. Delgado from Córdoba, Spain on descendants of Iberian bovines. This study continued in the US on four lines of cattle from Spanish descent.

Origins and genetic diversity of New World Creole cattle: inferences
from mitochondrial and Y chromosome polymorphisms
C. Ginja, M. C. T. Penedo, L. Melucci, J. Quiroz, O. R. Martı́nez López, M. A. Revidatti,
A. Martı́nez-Martı́nez, J. V. Delgado and L. T. Gama

Utilization of Animal Genetic Resources in Brazil: Results of a 28-year Conservation Program 2009
Arthur da Silva Mariante, Concepta McManus, Maria do Socorro Maués
Albuquerque, Samuel R. Paiva

Genetic Potential of the Uruguayan Creole Cattle and Compariosn with Argentinian and Brazilian Creole Populations using Molecular Markers 2006
E. Armstrong, Postiglioni, A. Martínez

Lactation Curve in Tropical Milking Criollo usingRandom Regression Test-Day Models 2006
E. Santellano-Estrada, J. de Alba, Y.M. Chang, D. Gianola,
R. Ramírez-Valverde, and C.M. Becerril-Pérez

The Brazilian Model for the Conservation of Genetic Resources 2006
M.A. Lopes, C. McManus, and A.S. Mariante

Breed Effects And Individual Heterosis For Pregnacy, Calving
And Weaning Rates In Criollo, Guzerat And F1 Cows
G. Martínez-Velázquez, M. Montaño-Bermúdez, and J. A. Palacios-Fránquez

Effect Of Hair Characteristics On The Adaptation
Of Cattle To Warm Climates
T.A. Olson, C.C. Chase Jr., C. Lucena, E. Godoy, A. Zuniga and R. J. Collier

The Genetics of Coloration in Texas Longhorns 2004
An in-depth series on frequency of color patterns by David M. Hillis, an Alfred W. Roark Centennial Professor at The University of Texas at Austin

Loss of Genetic Variation In Cloned Populations 2002
R. Crump and B. Tier

Mating Strategies In A Nulceus Scheme 2002
P. Korpiaho, I. Strandén and E.A. Mäntysaari

Genetic differentiation among geographically isolated populations of Criollo cattle and their divergence from other Bos taurus breeds  2000
N.D. Russell, J. Rios, G. Erosa, M.D. Rommenga, and D. E. Hawkins

Germplasm Evaluation in Beef Cattle-Cycle IV:  Birth and Weaning Traits  1998
Larry Verl Cundiff, US Dept. Agriculture study finds Texas Longhorn cattle possess a 97% unassisted calving rate.

Phantom Subspecies: The Wood Bison Bison bison “athabascae”
Rhoads 1897 Is Not a Valid Taxon, but an Ecotype  
Valerius Geist
Don’t be mislead by the species title, this environmental adaptation research is relevant to all species. It explains regional phenotypic differences.

Ancient DNA suggests a recent expansion of European cattle from a diverse wild progenitor species 1996
Jillian F. Bailey, Martin B. Richards, Vincent A. Macaulay, Isabelle B. Colson, I. Tim James, Daniel G. Bradley, Robert E. Hedges and Bryan C. Sykes

Social segregation and the maintenance of social stability in a feral cattle population 1993
Alfonso Lazo

Florida Scrub Cattle: Their History and Plans for the Present 1986
T. A. Olson

Criollo Cattle of Northwestern Mexican Deserts 1984
Gary Nabham

Cattlemen's Texas Longhorn Conservancy