Low frequency of Y anomaly detected in Australian Brahman cow-herds

de Camargo, Gregório M. F., Porto-Neto, Laercio R., Fortes, Marina R. S., Bunch, Rowan J., Tonhati, Humberto, Reverter, Antonio, Moore, Stephen S. and Lehnert, Sigrid A. (2015) Low frequency of Y anomaly detected in Australian Brahman cow-herds. Meta Gene, 3 59-61. doi:10.1016/j.mgene.2015.01.001

Author de Camargo, Gregório M. F.
Porto-Neto, Laercio R.
Fortes, Marina R. S.
Bunch, Rowan J.
Tonhati, Humberto
Reverter, Antonio
Moore, Stephen S.
Lehnert, Sigrid A.
Title Low frequency of Y anomaly detected in Australian Brahman cow-herds
Journal name Meta Gene   Check publisher's open access policy
ISSN 2214-5400
Publication date 2015-02-01
Sub-type Article (original research)
DOI 10.1016/j.mgene.2015.01.001
Open Access Status DOI
Volume 3
Start page 59
End page 61
Total pages 3
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
• Low frequency of the Y anomaly in Australian cow population.
• The anomaly doesn't affect the pregnancy rates.

Indicine cattle have lower reproductive performance in comparison to taurine. A chromosomal anomaly characterized by the presence Y markers in females was reported and associated with infertility in cattle. The aim of this study was to investigate the occurrence of the anomaly in Brahman cows. Brahman cows (n = 929) were genotyped for a Y chromosome specific region using real time-PCR. Only six out of 929 cows had the anomaly (0.6%). The anomaly frequency was much lower in Brahman cows than in the crossbred population, in which it was first detected. It also seems that the anomaly doesn't affect pregnancy in the population. Due to the low frequency, association analyses couldn't be executed. Further, SNP signal of the pseudoautosomal boundary region of the Y chromosome was investigated using HD SNP chip. Pooled DNA of “non-pregnant” and “pregnant” cows were compared and no difference in SNP allele frequency was observed. Results suggest that the anomaly had a very low frequency in this Australian Brahman population and had no effect on reproduction. Further studies comparing pregnant cows and cows that failed to conceive should be executed after better assembly and annotation of the Y chromosome in cattle.
Keyword Bos indicus
Sex chromosomes
Y translocation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Queensland Alliance for Agriculture and Food Innovation
School of Chemistry and Molecular Biosciences
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Created: Fri, 06 Mar 2015, 23:11:56 EST by Mrs Louise Nimwegen on behalf of School of Chemistry & Molecular Biosciences