TY - JOUR T1 - Evaluation of Some Spermatological Parameters Following Escherichia coli Contamination in Bull Semen TT - Boğa Spermasında Escherichia coli Kontaminasyonu Sonrası Bazı Spermatolojik Parametrelerin Değerlendirilmesi AU - Esin, Burcu AU - Sezener Kabay, Merve Gizem AU - Kaya, Cumali AU - Ergüden, Volkan Enes PY - 2025 DA - June Y2 - 2025 DO - 10.30607/kvj.1639764 JF - Kocatepe Veterinary Journal JO - kvj PB - Afyon Kocatepe Üniversitesi WT - DergiPark SN - 1308-1594 SP - 164 EP - 170 VL - 18 IS - 2 LA - en AB - This study aimed to evaluate the effects of extended-spectrum beta-lactamase (ESBL) producing and non-producing Escherichia coli concentrations on bull semen motility parameters and spermatozoa viability. A total of 50 frozen semen straws from the same Simmental bull were used. All semen straws were thawed in a water bath at 37°C and divided into 5 groups of 10 semen samples. Group 1 (G1) (n=10) was the uncontaminated control group. Group 2 (G2) (n=10) was contaminated with 100,000 cfu/ml and Group 3 (G3) (n=10) was contaminated with E. coli ATCC 25922 at a concentration of 1,000,000 cfu/ml. Group 4 (G4) (n=10) was contaminated with 100,000 cfu/ml and Group 5 (G5) (n=10) was contaminated with ESBL producing E. coli BAA-196 at a concentration of 1,000,000 cfu/ml. In the study, progressive motility, motility and percentages of dead-live spermatozoa in semen samples of these groups were analyzed over time. Significant decreases in spermatozoa motility and viability were observed and the most significant effects were seen in groups (G4 and G5) contaminated with high concentrations of ESBL-producing E. coli (p KW - Bull KW - Contamination KW - Escherichia coli KW - Sperm parameters N2 - Bu çalışma, genişlemiş spektrumlu beta laktamaz (ESBL) üreten ve üretmeyen Escherichia coli konsantrasyonlarının boğa sperma motilite parametreleri ve spermatozoa canlılığı üzerindeki etkilerini değerlendirmeyi amaçlamıştır. Aynı Simental boğasından toplam 50 adet donmuş sperma payeti kullanıldı. Tüm sperma payetleri 37°C'de su banyosunda çözdürülerek, her biri 10 sperma örneğinden oluşan 5 gruba ayrıldı. Grup 1 (G1) (n=10), kontamine edilmeyen kontrol grubunu oluşturdu. Grup 2 (G2) (n=10), 100.000 cfu/ml ve Grup 3 (G3) (n=10), 1.000.000 cfu/ml konsantrasyonunda E. coli ATCC 25922 ile, Grup 4 (G4) (n=10), 100.000 cfu/ml konsantrasyonda ve Grup 5 (G5) (n=10), 1.000.000 cfu/ml konsantrasyonda ESBL üreten E. coli BAA-196 ile kontamine edilen grupları oluşturuldu. Çalışmada bu gruplara ait sperma örneklerinde progresif motilite, motilite ve ölü-canlı spermatozoa yüzdelerinin zaman içinde değişimi analiz edildi. Spermatozoa motilitesi ve canlılığında önemli azalmalar gözlemlendi ve en belirgin etkiler, yüksek ESBL üreten E. coli konsantrasyonlarıyla kontamine olan gruplarda (G4 ve G5) görüldü (p CR - Cojkic, A., Niazi, A., Guo, Y., Hallap, T., Padrik, P., & Morrell, J. M. (2021). 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Bacterial contamination of ram semen, antibiotic sensitivities, and effects on sperm quality during storage at 15 C. Animal Reproduction Science, 122(1-2), 142-149. UR - https://doi.org/10.30607/kvj.1639764 L1 - https://dergipark.org.tr/tr/download/article-file/4609119 ER -