2007
DOI: 10.1186/1471-2156-8-83
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Abstract: Background: Brazil holds the largest commercial cattle populations worldwide. Local cattle breeds can be classified according to their origin, as exotic or Creole. Exotic breeds imported in the last 100 years, both zebuine and taurine, currently make up the bulk of the intensively managed populations. Locally adapted Creole breeds, originated from cattle introduced by the European conquerors derive from natural selection and events of breed admixture. While historical knowledge exists on the Brazilian Creole b… Show more

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Cited by 90 publications
(122 citation statements)
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“…However, the low number of males with respect to the females affects effective population size (N E ) and F IS index. Stochastic events such as founder effect and genetic drift, acting since the origin of this population, may have affected allelic frequencies and may be the cause of the observed departures from equilibrium (Lirón et al, 2006;Egito et al, 2007;Martín-Burriel et al, 2011). Similar effects caused by similar circumstances were observed by Kantanen et al (2000) in Eastern Finnish cattle.…”
Section: Microsatellitesmentioning
confidence: 52%
“…However, the low number of males with respect to the females affects effective population size (N E ) and F IS index. Stochastic events such as founder effect and genetic drift, acting since the origin of this population, may have affected allelic frequencies and may be the cause of the observed departures from equilibrium (Lirón et al, 2006;Egito et al, 2007;Martín-Burriel et al, 2011). Similar effects caused by similar circumstances were observed by Kantanen et al (2000) in Eastern Finnish cattle.…”
Section: Microsatellitesmentioning
confidence: 52%
“…El número de alelos observados en el presente estudio fue similar al 13,2 reportado por Egito et al (2007), pero marcadamente mayor al reportado por otros estudios (Maudet et al, 2002;Steigleder et al, 2004;Villalobos-Cortés et al, 2011;Acosta et al, 2013). Puesto que existe coincidencia en una mayoría de los marcadores analizados por los distintos estudios, la mayor cantidad de alelos detectados podría relacionarse con los factores de mayor tamaño de muestra y mayor cantidad de establecimientos visitados.…”
Section: Análisis Nacionalunclassified
“…Además, se observó que el valor de He fue 4% mayor (P<0,001) que Ho, lo que implica una deficiencia de heterocigotas. El incumplimiento del equilibrio HW en poblaciones de ganado bovino ha sido reportado en numerosos estudios (Egito et al, 2007;Martín-Burriel et al, 2011;Acosta et al, 2013). La deficiencia de heterocigotas también ha sido reportada en varios estudios con bovinos (Maudet et al, 2002;Egito et al, 2007;Cañón et al, 2008;Martín-Burriel et al, 2011;Acosta et al, 2013).…”
Section: Análisis Nacionalunclassified
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