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USE OF QUINOLONES IN BULL SEMEN EXTENDERS TO REDUCE SPERM DEOXYRIBONUCLEIC ACID DAMAGE

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Author(s): Clara Gonzalez-Marin | Michael Eduard Kjelland | Rosa Roy | Carmen Lopez-Fernandez | Jose Luis Fernandez | Juan Fernando Moreno | Jaime Gosalvez

Journal: American Journal of Animal and Veterinary Sciences
ISSN 1557-4555

Volume: 7;
Issue: 4;
Start page: 180;
Date: 2012;
Original page

Keywords: Bacteria | DNA Fragmentation | Antibiotics

ABSTRACT
Cryopreserved sperm samples from Holstein bulls (n = 20) were examined for bacterial presence and Sperm DNA Fragmentation (SDF) dynamics. SDF was assessed after thawing (T0) and at 4, 24 and 48 h of incubation (37°C) and the rate of SDF (r-SDF), as an estimator of the DNA degradation over time, was calculated. Two groups of bulls were identified based on the presence or absence of bacteria: One group (n = 10) had a readily detectable bacterial presence, while the other group (n = 10) had an undetectable bacterial presence. Differences in the SDF at T0 were not observed between these two groups. However, statistically different results were found after 24 h of incubation at 37°C (Kaplan-Meier estimator; Log-Rank Matel-Cox, p0.05) were not detected between the control and the quinolone treated sample for those samples without bacteria. However, differences (p
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