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| Carreira,J.T.; Trevizan,J.T.; Kipper,B.H.; Perri,S.H.V.; Carvalho,I.R.; Rodrigues,L.H.; Silva,C.; Koivisto,M.B.. |
| The routine semen evaluation assessing sperm concentration, motility and morphology, does not identify subtle defects in sperm chromatin architecture. Bulls appear to have stable chromatin, with low levels of DNA fragmentation. However, the nature of fragmentation and its impact on fertility remain unclear and there are no detailed reports characterizing the DNA organization and damage in this species. The intensive genetic selection, the use of artificial insemination and in vitro embryo production associated to the cryopreservation process can contribute to the chromatin damage and highlights the importance of sperm DNA integrity for the success of these technologies. Frozen-thawed semen samples from three ejaculates from a Nellore bull showed high... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Bovine; Chromatin integrity; Protamine; Sperm morphology. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000200417 |
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