Browsing by Author "NUR, ZEKARİYA"

Now showing 1 - 7 of 7

Concentration of trace elements in semen and relation to semen characteristics in Arabian stallions
(Indian Veterinary Journal, 2008-11-01) Doğan, İbrahim; Oruç, Hasan Hüseyin; Nur, Zekariya; Başkaya, Ruhtan; DOĞAN, İBRAHİM; ORUÇ, HASAN HÜSEYİN; NUR, ZEKARİYA; Başkaya, Ruhtan; Uludağ Üniversitesi/Veteriner Fakültesi/Üreme ve Suni Tohumlama Bölümü; 0000-0003-1976-1814; 0000-0002-1438-221X; AAI-2212-2021; R-8366-2018; AAH-2635-2021; CDX-4593-2022
Environmental pollutants may influence male reproductive function. Heavy metals such as lead and cadmium are abundant environmental toxicants. The purpose of this study was to determine copper, iron, lead, zinc and cadmium concentration in the semen of Arabian stallions during breeding season, and to find correlation of these elements with conventional semen parameters.
Drone semen cryopreservation with protein supplemented tl-hepes based extender
(Kafkas Univ, Veteriner Fakultesi Dergisi, 2019-07-01) Alcay, Selim; ALÇAY, SELİM; Çakmak, Selvinar; Çakmak, İbrahim; ÇAKMAK, İBRAHİM; Mülkpınar, Emine; Toker, Mehmed Berk; TOKER, MEHMED BERK; Üstüner, Burcu; ÜSTÜNER, BURCU; Şen, Hasan; Nur, Zekariya; NUR, ZEKARİYA; Bursa Uludağ Üniversitesi/Veteriner Fakültesi; 0000-0002-1438-221X; AAH-2635-2021; AAH-2558-2021; AAG-7238-2021; A-2794-2014
The aim of the current study was to determine the optimum concentration of bovine serum albumin for post-thawing quality of drone sperm and this is the first study to evaluate the effect of BSA supplemented TL-Hepes based extenders for drone semen cryopreservation. Sexually mature drones were used for semen collection. Pooled semen was diluted with TL-Hepes based extender supplemented with different concentrations of BSA (1 mg/mL, 3 mg/mL, and 5 mg/mL) or without BSA (control), at a final concentration of 100x10(6) spermatozoon/mL. Motility, plasma membrane functional integrity (HOST), and defected acrosome (PSA-FITC) were evaluated in the study. At post thaw, the highest sperm motility rates were obtained in the BSA5 group (P< 0.05). Functional integrity of sperm membrane was better preserved in the BSA3 and BSA5 groups compared to the other groups. The acrosomal integrity rates were higher in BSA5 group than in control group (P< 0.05). The study shows that bovine serum albumin supplemented TL-Hepes based extenders have beneficial effect on drone semen parameters at post-thaw. The results of the study demonstrated a notable advantage of using 5 mg/mL of BSA in TL-Hepes based extender.
Effects of various cryoprotective agents on post-thaw drone semen quality
(Kafkas Üniversitesi Veteriner Fakültesi Dergisi, 2015-01-01) Alçay, Selim; Üstüner, Burcu; Çakmak, İbrahim; Çakmak, Selvinar; Nur, Zekariya; ALÇAY, SELİM; ÜSTÜNER, BURCU; ÇAKMAK, İBRAHİM; Çakmak, Selvinar; NUR, ZEKARİYA; Uludağ Üniversitesi/Veteriner Fakültesi/Tohumlama Anabilim Dalı; Uludağ Üniversitesi/Veteriner Fakültesi/Arıcılık Geliştirme Uygulama ve Araştırma Merkezi; 0000-0002-1438-221X; AAH-2558-2021; AAG-7238-2021; AAH-2635-2021; JJQ-9411-2023; JLJ-9258-2023
The aim of the present study was to evaluate the effect of different cryoprotectants on post-thaw semen motility and plasma membrane integrity of drone spermatozoa. Semen was obtained from mature drones (16 days or older) harvested from four colonies. Collected semen was diluted to a final concentration of 1/5 (semen/extender) in 0% cryoprotectant (control), 6% glycerol, 6% Ethylene Glycol, 6% 1,2 propanediol or 6% DMSO using a two-step dilution method. The equilibrated semen was frozen in 0.25-ml straws. The percentage of sperm motility and swollen tails (HOST) spermatozoa were evaluated following dilution with extender A (non-cryoprotectant), equilibration and post-thaw stages. In terms of post-thaw motility and plasma membrane integrity recovery we can rank the used cryoprotectant as DMSO, Ethylene Glycol, Glycerol and 1,2 Propanediol; respectively. In conclusion, post-thaw sperm motility and plasma membrane integrity of the present study was significantly better when sperm was frozen in DMSO with respect to control, glycerol, ethylene glycol, 1,2 propanediol (P<0.05).
L-Carnitine supplemented extendersimprove post-thawing quality of honey bee drone (Apis mellifera) Spermatozoa [1]
(Kafkas Üniversitesi, 2021-07-01) Alçay, Selim; Çakmak, Selvinar; Çakmak, İbrahim; Aktar, Ahmet; Yılmaz, Melih; Üstüner, Burcu; Akkaşoğlu, Mustafa; Taşkıran, Şeyma; Ayaz, Elif; Sağırkaya, Hakan; Nur, Zekariya; ALÇAY, SELİM; Çakmak, Selvinar; ÇAKMAK, İBRAHİM; Aktar, Ahmet; Yılmaz, Melih; ÜSTÜNER, BURCU; Akkaşoğlu, Mustafa; Taşkıran, Şeyma; Ayaz, Elif; SAĞIRKAYA, HAKAN; NUR, ZEKARİYA; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Döreme ve Suni Tohumlama Anabilim Dalı.; Bursa Uludağ Üniversitesi/Arıcılığı Geliştirme-Uygulama ve Araştırma Merkezi.; 0000-0002-8000-5770; 0000-0002-2975-2594; 0000-0002-1438-221X; CBC-7350-2022; ENZ-0848-2022; LMK-3522-2024; CBC-1744-2022; HSP-0413-2023; AAG-7238-2021; EMD-6376-2022; EAY-3244-2022; IBA-3364-2023; DPO-0081-2022; AAH-2635-2021
The study aimed to evaluate the effects of L-carnitine on honey bee (Apis mellifera) drone spermatozoon at post-thaw. Semen samples obtained from sexually mature drones were pooled. Then, pooled semen was diluted with different concentrations of L-carnitine (2.5 mM/5 mM/10 mM) and without L-carnitine (control) supplemented extenders. Motility, plasma membrane functional integrity, acrosomal integrity and mitochondrial function were negatively affected by the cryopreservation process but DNA integrity was not affected. Malondialdehyde (MDA) concentration was used for analyzing the membrane lipid peroxidation status and a better result was obtained in the LC5 group compared with the control group at post-thaw. L-carnitine groups had a positive effect on sperm motility, plasma membrane integrity, and mitochondrial function compared to the control group (P<0.05). Acrosomal integrity was better preserved in the LC5 group compared to the control group. The study shows that LC supplemented extenders have beneficial effects on honey bee drone sperm parameters. The results of the present study demonstrated the beneficial effect of using a 5 mMol LC supplemented extender.
Lyophilized extender supplemented with rainbow trout (oncorhynchus mykiss) seminal plasma improves cryopreservation of ram sperm
(Kafkas Üniversitesi, 2022-03-13) Üstuner, Burcu; Alçay, Selim; Gökçe, Elif; Yılmaz, M. Melih; Aktar, Ahmet; Hüraydın, Oğuzhan; Duman, Muhammed; Önder, N. Tekin; Akal, Eser; Nur, Zekariya; ÜSTÜNER, BURCU; ALÇAY, SELİM; Yılmaz, M. Melih; Aktar, Ahmet; Hüraydın, Oğuzhan; DUMAN, MUHAMMED; NUR, ZEKARİYA; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Döreme ve Suni Tohumlama Anabilim Dalı.; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Su Hayvanları Hastalıkları Anabilim Dalı.; 0000-0002-1438-221X ; 0000-0001-7707-2705 ; 0000-0002-4125-6841 ; AAG-7238-2021; CBC-7350-2022; GWC-2055-2022; CBC-1744-2022; AHB-0614-2022; T-1697-2019; AAH-2635-2021
This study aimed to investigate the effect of the Rainbow trout seminal plasma (RTSP) supplemented (control, 10% or 15%) lyophilized extender on freezability of ram semen. Collected semen was pooled and split into two aliquots, and each of the ejaculates was diluted with fresh or lyophilized extenders with RTSP (0%, FC and LC; 10% F10 and L10or 15% F15 and L15) using two-step dilution method. Semen was frozen using the programmable freezing machine. Semen samples were examined for sperm motility, defective acrosomes, plasma membrane integrity and DNA fragmentation at native and post-thaw stage. The highest percentages of post-thaw motility and plasma integrity were observed in the F10, F15, and L15 (P 0.05). There was no significant difference in the rate of post-thaw defective acrosomes when the other extender groups were compared with the control (P 0.05). The highest percentage of post-thaw DNA fragmentation values were observed in the FC group, while the lowest DNA fragmentation was obtained in the F15 but only significant different from FC and LC groups. In conclusion, the findings of this study show that the lyophilized extender with 15% RTSP added can be used successfully for freezing ram semen.
The effect of concentration and storage time on short-term storage of ram sperm
(Kafkas Univ, Veteriner Fakultesi Dergisi, 2022-11-19) Dayanıklı, Cemal; Şengül, Ebru; Bülbül, Bülent; Nur, Zekariya; ÜSTÜNER, BURCU; NUR, ZEKARİYA; Bursa Uludağ Üniversitesi/Veteriner Fakültesi; 0000-0002-1438-221X; AAH-2635-2021
The present study was conducted to observe the effect of different dilution rates on ram sperm motion characters (motility, progressivity, velocity and average of speed), head diameter, mitochondrial membrane potential (MMP) and live intact acrosome rate during liquid storage for 96 h at 5 degrees C. Normospermic semen samples that obtained from 4 adult rams were pooled. Pooled semen was split into two aliquots; Low Dilution Rate (LDR) (400 million) and High Dilution Rate ( HDR) (20 million) motile spermatozoa per insemination dose/0.25 mL straw and were diluted with a skim milk-egg yolk-based extender. It was observed that the Total Motility (TM) and total progressivity of the LDR group decreased more rapidly than HDR group over time, in general. From the 12th h to the 96th h; the rapid progressivity (P<0.01), MMP (P<0.05), live sperm rates with intact acrosome (P<0.01) and straightness (STR) (P<0.001) of the HDR group results were statistically better than LDR. It was concluded that the spermatological properties examined during storage were damaged at different times and were affected by sperm concentration and also storage time.
Toxicity assessment of chronic exposure to common insecticides and bee medications on colony development and drones sperm parameters
(Springer, 2021-04-12) Ben Abdelkader, Faten; Çakmak, İbrahim; Çakmak, Selvinar Seven; Nur, Zekariya; İncebıyık, Ece; Aktar, Ahmet; Erdost, Hatice; Ben Abdelkader, Faten; ÇAKMAK, İBRAHİM; NUR, ZEKARİYA; İncebıyık, Ece; Aktar, Ahmet; ERDOST, HATİCE; Bursa Uludağ Üniversitesi/Arıcılığın Geliştirilmesi-Uygulama ve Araştırma Merkezi.; Bursa Uludağ Üniversitesi/Ziraat Fakültesi/Zootekni Bölümü.; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Üreme ve Suni Tohumlama Anabilim Dalı.; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Histoloji ve Embriyoloji Anabilim Dalı.; 0000-0003-4063-5521; 0000-0002-1438-221X; 0000-0002-2975-2594; AAH-2635-2021; GAF-2568-2022; KFW-7236-2024; CWI-2986-2022; CBC-1744-2022; ETW-1227-2022
The effect of agrochemicals and beekeeping treatments on drones have not been widely investigated compared to workers or queens. In the present study, we investigated the chronic exposure of chemicals set (deltamethrin, acetamiprid, oxalic acid, fumagillin, and amitraz) on some sperm parameters and on the histomorphology of seminal vesicles. We also assessed the colony development and nosema load before and after the exposure. Thirty native Apis mellifera anatolica honeybee colonies with sister queens equalized with brood and total frame of bees were used for this experiment. Five colonies were used for each group. Deltamethrin, acetamiprid and fumagillin were given as oral chronic exposure at final concentrations of 25.10(-6) mg L-1, 0.01 m L-1 and 50 mg L-1 respectively in syrup solution (50/50). Colonies were exposed to oxalic acid by spraying 5 mL per frame space of 3% (w/v) of oxalic acid dihydrate. Finally, the amitraz was applied based on the manufacturer's instructions. The concentrations chosen represented the field-realistic concentrations and those used by beekeepers in the region. Results showed that deltamethrin reduced brood production. In the same group, we found a high increase in nosema load. All treatments decreased sperm count except for fumagillin but this compound increased sperm mortality and increased the percentage of sperm with defected acrosome integrity. The amitraz exhibited a high sperm mortality and high percentage of sperm with defected membrane integrity function. The sperm parameters such as the count, the motility, the acrosome integrity, the membrane function of sperm, and the histomorphology of seminal vesicles of drones exposed to oxalic acid were the most affected. Bee medications commonly used such as oxalic acid and fumagillin should be more investigated and should be considered by beekeepers and particularly queen breeders.