Association between GNRHR, LHR and IGF1 polymorphisms and timing of puberty in male Angus cattle

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cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloUniversidad Nacional de La Plata es
cic.versioninfo:eu-repo/semantics/submittedVersiones
dc.date.accessioned2016-08-10T14:19:21Z
dc.date.available2016-08-10T14:19:21Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/3515
dc.titleAssociation between GNRHR, LHR and IGF1 polymorphisms and timing of puberty in male Angus cattleen
dc.typeArtículoes
dcterms.abstractBackground: In bovines, there are significant differences within and among beef breeds in the time when bulls reach puberty. Although the timing of puberty is likely to be a multigenic trait, previous studies indicate that there may also be single genes that exert major effects on the timing of puberty within the general population. Despite its economic importance, there are not many SNPs or genetic markers associated with the age of puberty in male cattle. In the present work, we selected three candidate genes, <i>GNRHR</i>, <i>LHR</i> and <i>IGF1</i>, and associated their polymorphisms with the age of puberty in Angus male cattle.\nResults: After weaning, 276 Angus males were measured every month for weight (W), scrotal circumference (SC), sperm concentration (C) and percentage of motility (M). A total of 4 SNPs, two within <i>GNRHR</i>, one in <i>LHR</i> and one in <i>IGF1</i> were genotyped using the pyrosequencing technique. <i>IGF1-SnaBI SNP</i> was significant associated (P < 0.01) with age at SC 28 cm, but it were not associated with age at M 10% and C 50 million. Genotype CC exhibited an average age at SC 28 cm of 7 and 11 days higher than CT (p = 0.037) and TT (p = 0.012), respectively. This SNP explained 1.5% of the genetic variance of age of puberty at SC28. <i>LHR-I499L, GNRHR-SNP5</i> and <i>GNRHR-SNP6</i> were not associated with any of the measurements. However, <i>GNRHR</i> haplotypes showed a suggestive association with age at SC 28 cm.\nConclusions: The findings presented here could support the hypothesis that IGF1 is a regulator of the arrival to puberty in male calves and is involved in the events that precede and initiate puberty in bull calves. Given that most studies in cattle, as well as in other mammals, were done in female, the present results are the first evidence of markers associated with age at puberty in male cattle.en
dcterms.creator.authorLirón, Juan Pedroes
dcterms.creator.authorPrando, Albertoes
dcterms.creator.authorFernández, María Elenaes
dcterms.creator.authorRipoli, María Verónicaes
dcterms.creator.authorRogberg Muñoz, Andréses
dcterms.creator.authorGoszczynski, Daniel E.es
dcterms.creator.authorBaldo, Andréses
dcterms.creator.authorPosik, Diego Manueles
dcterms.creator.authorGiovambattista, Guillermoes
dcterms.creator.authorPeral García, Pilares
dcterms.extent6 p.es
dcterms.identifier.other1471-2156es
dcterms.identifier.urlRegistro completoes
dcterms.isPartOf.issuevol. 13es
dcterms.isPartOf.seriesBMC Geneticses
dcterms.issued2012-04-01
dcterms.languageEspañoles
dcterms.licenseAttribution 4.0 International (BY 4.0)es
dcterms.subjectgonadorelin receptoren
dcterms.subjectsomatomedinen
dcterms.subjectcattleen
dcterms.subjectgene sequenceen
dcterms.subjectgenetic variabilityen
dcterms.subjectgenotypeen
dcterms.subjectbovineen
dcterms.subjectgonadotropin releasing hormone receptoren
dcterms.subjectinsulin-like growth factor 1en
dcterms.subjectluteinizing hormone receptoren
dcterms.subjectpolymorphismen
dcterms.subject.materiaCiencias Veterinariases

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