Deniz Yeni

Deniz Yeni
Afyon Kocatepe University | AKU · Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination

DVM, PhD

About

58
Publications
16,998
Reads
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523
Citations
Citations since 2017
35 Research Items
367 Citations
2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080
Additional affiliations
April 2012 - March 2017
Afyon Kocatepe University
Position
  • Professor (Assistant)
February 2002 - February 2017
Afyon Kocatepe University
Position
  • Head of Department

Publications

Publications (58)
Article
Full-text available
We conducted this study to determine the potential cryopreservative effects of different hesperidin (vitamin P; H) doses on ram semen after freeze-thawing. Semen samples were obtained from Sönmez rams using an artificial vagina. The samples were divided into six groups: control, 10, 50, 100, 250, and 500 µg/mL H (C, H10, H50, H100, H250, and H500,...
Preprint
Full-text available
We conducted this study to determine the potential cryopreservative effects of different hesperidin (vitamin P; HSP) doses on ram semen after freeze-thawing. Semen samples were obtained from Sönmez rams by an artificial vagina. The samples were divided into six groups: control, 10, 50, 100, 250, and 500 µg/mL HSP (C, HSP10, HSP50, HSP100, HSP250, a...
Article
The aim of this study was to determine the effects of thymoquinone (TQ), which is the most essential active compound of Nigella sativa, on the spermatological parameters of ram semen during cryopreservation. Ejaculates were collected from five Sonmez rams using an artificial vagina and extended with Tris‐based extender not containing TQ (control, 0...
Article
The present study investigated the protective effect of dried white Mulberry extract (DWME) against carmustine (Crm) induced biochemical alterations and spermatological, histopathological, and fertility damage in Wistar albino rats. Male rats were divided into four groups (control, Crm, Crm + DWME, and DWME group). It was found that Crm decreased t...
Article
Full-text available
In this study, the cryoprotective effect of different doses of propolis (P) on bull semen, which has solid pharmacological properties thanks to its rich phenolic components, was investigated biochemically and physiologically. Semen samples were collected from Simmental breed bulls via the artificial vagina and pooled. After dividing into five group...
Article
Full-text available
The aim of this study was to investigate whether vaccenic acid (VA) added to TRIS semen extender has an effect on freezing bull semen. The semen was collected at intervals of three days through an artificial vagina then pooled. The pooled ejaculates were divided into five components as the control (C; no supplement) and VA (25, 50, 100, and 200 μg...
Article
Full-text available
The objective of the study was to determine the effect of carnosic acid, to Malakli Shepherd dog semen motility, morphology, viability and membran integrity parameters after frozen-thawed prosess. Five animal were used in this study and the sperm rich portion of the ejaculates were mixed and divided in to five equal groups. Each group extended with...
Preprint
Full-text available
This study aimed to determine the protective effects of Thymoquinone (TQ), which is the most essential active compound of Nigella sativa , on the spermatological parameters of frozen‐thawed ram semen. Ejaculates were collected from five Sonmez rams. Ejaculates were extended with control (0 µg/mL TQ), 10, 25, 50 and 100 µg/mL TQ supplemented Tris-ba...
Article
Full-text available
This study aimed to determine the probable protective effect of gallic acid (GA) on the spermatological parameters of frozen‐thawed bull semen. Ejaculates were collected from four Holstein bulls. The mixed ejaculate was divided into four equal groups as control (0 µg/mL GA), 50, 100 and 200 µg/mL GA with a Tris-based extender. All extended groups w...
Preprint
Full-text available
In this study, the cryoprotective effect of different doses of propolis (P) on bull semen, which has strong pharmacological properties thanks to its rich phenolic components, was investigated biochemically and physiologically. Semen samples were collected from Simmental breed bulls via the artificial vagina and pooled. After dividing into five grou...
Article
Full-text available
Bu çalışmada Pırlak koç spermasının üreme mevsimi dışında dondurulmasında sperma sulandırıcısına eklenen antioksidan özelliğe sahip trolox ve taurinin çözüm sonu spermatolojik parametreler üzerine etkisinin ortaya konması amaçlandı. Bu amaçla 10 baş Pırlak koçtan haftada iki kez olacak şekilde suni vagen yardımı ile spermalar toplandı. Normospermik...
Article
Full-text available
This study aimed to investigate the effectiveness of using red pine bark tree extract (P; Pinus brutia Ten) as a TRIS extender in an attempt to prevent oxidative stress in bull spermatozoa after freezing. Semen specimens were obtained from Simmental bulls via an artificial vagina and pooled. They were separated into five specimens and diluted with...
Article
Full-text available
Transmissible Venereal Tumor (TVT) is one of the most uncontrolled spreading tumor via mating between dogs observed in both sexes. The clinical findings are less remarkable and are usually located in the caudal part of the penis and may include preputial discharge, licking of the region, dysuria, phimosis or paraphimosis (occasionally). In this stu...
Article
Full-text available
: In the present research the aim was emphasized to find out the effects of bovine serum albumin (BSA) on quality of sperm and DNA damage at 0, 24 th, 48 th and 72 th hours in Merino ram semen atshort term preservation (5°C). Ejaculates were obtained from five Merino Rams which were collected by artificial vagina and all the samples were pooled at...
Article
Full-text available
Background: Boron has been considered as an essential nutrient for decreasing lipid peroxidation and improving antioxidant mechanism in different animal species. On the other hand, its effect on quality or DNA damage following cryopreservation process in fish sperm is still unclear. Objective: Experiments were designed to analyse the effect of a...
Article
Full-text available
This study aims to investigate the effect of catechin (CT), green tea extract, as a supplement to Tris extender on semen quality parameters in frozen-thawed of bull sperm. Ejaculates were taken with artificial vagina from Holstein bulls and divided equal five aliquots, diluted to containing different amounts of CT (5, 10, 25 and 50 μg/mL) and no-ad...
Article
Full-text available
BACKGROUND: Cryopreservation of sperm from different fish species requires different protocols. Therefore, it is necessary to perform studies to establish reliable procedures for each species. OBJECTIVE: Experiments were designed to analyse the effect of different types of cryoprotectants on post-thaw motility, viability and fertility as well as cr...
Article
Full-text available
Recently, it has been discovered that the doses of the MK-801 causing schizophrenia also initiate the oxidative stress in the testis. The current study investigated the protective role of the resveratrol against the MK-801 induced oxidative stress in the testis in mice. The testis weight, the total oxidant-antioxidant status, seminiferous tubules d...
Conference Paper
Full-text available
Methods: In this study, the relations of Transmissible Venereal Tumor (TVT) with some factors were investigated in 145 male dogs at the different breeds, ages and weigts in Eskişehir region in Turkey. TVT’s diagnosis was based on location of the tumor mass and mainly exfoliative cytological findings. Smears of caudal part of the penis were painted...
Article
Full-text available
The aim of the present study was to investigate the effects of different doses of Boron added to extender on some spermatological parameters, oxidative stress, and DNA damage during post-thawed of ram semen. The ejaculate samples were collected by artificial vagina from five Ramlıç rams. After determining the primary spermatological properties, tho...
Article
Full-text available
Background: Cryopreservation has a side effect on the motility, chromatin integrity and viability of sperm cells. Objective: The present study investigated the effects of supplementation with rosmarinic acid (RA) Tris extender on sperm quality parameters, plasma and acrosome membrane damage, antioxidant enzyme activity and chromatin integrity fo...
Presentation
Purpose: The aim of this study was to examine the effects of Apitoxin, on streptozotocin-induced diabetic rats, regarding spermatological features, body and reproductive tract measures in rats. Materials and Methods: In the study, 40 male "Wistar-albino" rats weighing between 200-320 grams were used at 3-4 months of age. Control group: Intraperiton...
Presentation
Full-text available
Cholesterol-preloaded cyclodextrin (CLC) molecules have been used to incorporate cholesterol into the plasma membranes of spermatozoa. Although its mechanism of action is not elucidated, itis assumed thatthe protective impact of CLC treatment results from increased cholesterol contents in plasma membrane, which successively results in modulating me...
Article
Full-text available
Bu çalışmada, Afyonkarahisar'da yetiştirilen 18-20 aylık yaşta 10 baş Pırlak koç kullanıldı. Koçların 1 yıl süre ile aylık olarak morfometrik testis ölçümleri, spermatolojik özellikler, spermatozoa DNA hasarı, bazı biyokimyasal parametreleri ve hormon düzeyleri ile birlikte iklimsel veriler değerlendirildi. Morfometrik testis ölçüleri ağustos ile e...
Article
Full-text available
The aim of this study was to investigate the effect of lyophilized pomegranate extract on spermato-logical features, pathology of testes and total antioxidant/oxidant status in rabbits. Adult male rabbits were divided into four groups containing six rabbits each. For 8 weeks, Group I received standard diet and 1 ml % 0.5 carboxymethyl cellulose (CM...
Article
Full-text available
ÖZET Yaban hayvanları ekosistemin ayrılmaz bir parçasıdır. Ani doğal felaketlerden dolayı veya insan müdahalesine bağlı olarak bu hayvanların kademeli olarak yokolmaları ekosisteme zarar verecek ve doğada çeşitli biyolojik bileşenler arasındaki dengeyi değiştirecektir. Böyle bir dengesizliğin ekosistem üzerinde olumsuz bir etkisi olabilir. Bu neden...
Article
Full-text available
Electro-ejaculation is a technique used to collect semen from rams. The aim of the study was to evaluate the stress response and the oxidant/antioxidant levels during electro-ejaculation (EE) procedure in merino rams. To assess the effect of this technique, six 3-4 years old merino rams were subjected to semen collection by EE. The technique was ap...
Article
Full-text available
Özet:Hayvanlarda iyi reprodüktif sonuçların alınabilmesi için kaliteli sperma kullanımı en önemli unsurlardandır. Birçok nedene bağlı olarak DNA üzerinde sürekli hasar oluşmaktadır. Spermadaki hasarın bir kısmı normal DNA metabolizması sırasında meydana gelirken oldukça önemli bir kısmı ise spermanın alınması, işlenme süreci, değerlendirilmesi ve b...
Article
Full-text available
This study was conducted to determine the effect of carnosic acid, extracted from rosemary (rosmarinus officinalis), to epididymal buffalo sperm to short-term motility, abnormal spermatozoon rates and HOS test ratio. Semen samples were obtained from 36 (4-5 year old) Anatolian buffalos after the slaughtering. Semen were collected from each 6 testes...
Article
Full-text available
Öz Calcium ions are very important for many sperm functions involving sperm motility, reaction, and hyperactivation. The purpose of this study was to examine the effect of calcium channel blocker (CCB), Amlodipine (AML), on spermatological features, genital tract weight and spermatogenic cell density in adult male Wistar rats. Twelve rats (age, 12...
Article
Full-text available
ABSTRACT The study was conducted to compare the age with respect to some oestrus signs on pregnancy success in spontaneously oestrus signed 96 Holstein cows under field conditions. Some oestrus findings were examined by visual observation and some clinical tests then all cows were artificially inseminated by frozen-thawing semen. The dominant folli...
Article
Full-text available
ABSTRACT The present study was conducted to examine the protective roles of cysteamine, trehalose, alpha-lipoic acid and combinations of these antioxidants on post-thawed bull sperm and oxidative stress parameters. Five healthy Holstein bull (3-4 years old) were used. Eight ejaculates for each bull were collected and pooled. Pooled ejaculate, split...
Article
Ejaculates were collected from six Merino rams with the aid of an artificial vagina twice a week. The ejaculates containing spermatozoa with >80% forward progressive motility and concentrations higher than 2 × 109 spermatozoa/ml were pooled. The present study included two experiments. In experiment 1, each pooled ejaculate was divided into four equ...
Article
Full-text available
The objective of this study was to compare the efficacy of different estrus synchronization protocols on reproductive parameters in nulliparous Saanen goats at the end of the transition period. In this experiment, 71 nulliparous Saanen does were used and divided into four treatment groups as norgestomet implant plus GnRH (Imp-G), norgestomet implan...
Article
Full-text available
The aim of this study was to determine the effects of extenders in terms of motility, morphology and osmotic resistance (viability and HOS response: HE-test; modified hypoosmotic swelling test (HOST) associated with supravital eosin staining test) of diluted and liquid stored ram semen for seven days. A total of 5 Pirlak (Daglic × Kivircik, local b...
Article
Full-text available
The aim of this study was to investigate the effect of alpha lipoic acid (ALA, an universal antioxidant) on thinner-induced testicular toxicity regarding spermatological features, body and reproductive tract measures in rats. Adult male Sprague-Dawley rats were divided into five treatment groups, eight rats in each. Control group was treated with p...
Article
Full-text available
The purpose of this study was to determine the effect of Brucellosis on DNA integrity in cow cumulus cells by comet assay. The DNA damage was determined using by comet assay method in cumulus cells separated from Grade A and B oocytes aspirated from the ovaries of a Hollstein cow referred to local abattoir for conditional slaughtering. The DNA dama...
Article
Full-text available
Kocatepe Veterinary Journal The present study was conducted to compare the effect of oestrus signs on fertility and to investigate which of the oestrus signs have positive effect on pregnancy success in Brown Swiss (BS) and Simmental (S) cows under field conditions alternatively. The clinical findings of spontaneous oestrus signed cows were examine...
Article
Full-text available
The aim of this study was to determine the influences of two different concentrations in terms of motility, morphology, membrane integrity (viability and HOST response: HE-test; modified hypoosmotic swelling test (HOST) associated with supravital eosin staining test), DNA integrity (COMET assay) and oxidative stress parameters (MDA, malondialdehyde...
Article
Full-text available
The aim of the present study was to determine the effects of different doses of raffinose and methionine on post-thawed semen quality, lipid peroxidation and antioxidant enzyme activities of Angora buck (Capra hircus ancryrensis) sperm following cryopreservation. Ejaculates collected from three Angora bucks were evaluated and pooled at 37°C. Semen...
Article
Full-text available
The aim of this study was to determine the effects of antioxidants such as reduced glutathione (GSH) and cysteine in Laiciphose® extender on semen parameters, fertilizing ability, lipid peroxidation (LPO) level and glutathione peroxidise (GPx) activity of post-thawed bull semen. Totally 54 ejaculates of three bulls were used in the study. Five grou...
Article
The aim of the present study was to determine the effects of different doses of raffinose and methionine on post-thawed semen quality, lipid peroxidation and antioxidant enzyme activities of Angora buck (Capra hircus ancryrensis) sperm following cryopreservation. Ejaculates collected from three Angora bucks were evaluated and pooled at 37 degrees C...
Article
Full-text available
Being one of the most significant causes of fertilization failure, sperm functional impairment keeps up-to-date as a subject on which researches have been carried out for a long time. The semen quality evaluations are the most important factor in estimation of fertility in domestic animals. Nowadays, acrosomc reaction, hypo-osmotic swelling test, z...
Article
Full-text available
The purpose of this study was to assess the level of oxidative stress, monitored both by lipid peroxidation, nitric oxide, protein carbonyl oxidation and total antioxidant capacity in seminal plasma from semen collected from fertile rams during the breeding and non-breeding seasons. Oxidative stress in the reproductive system is thought to affect t...
Article
Full-text available
The objective of the present study was to describe some reproductive parameters, hormonal levels and some biochemical properties of blood serum of rams. Semen (via an artificial vagina) and blood were collected five times during the breeding season from a total of 5 mature and healthy Pirlak rams in Afyonkarahisar conditions. The values of testes l...
Article
Full-text available
The Single Cell Gel Electrophoresis (SCGE) in Sperm DNA Damage Evaluation One of the most important efficiency is fertility in animals. Especially DNA damage is important factor in fertility. However sperm DNA damage has been shown in many species. Decreasing in spermatozoa quality and also death embryo prior to implantation time and abnormal embry...
Article
Full-text available
The objective of the present study was to describe the relationship between some reproductive parameters, hormonal levels, and some biochemical properties of blood serum in rams under the Afyon province conditions. The total protein and globulin were positively (P < 0.01) correlated with sperm motility and sperm concentration in all of rams. Total...
Article
Full-text available
Unlike most domestic livestock species, sheep are widely known as animals with marked seasonality of breeding activity. The annual cycle of the daily photoperiod has been identified as the determinant factor of this phenomenon, while environmental temperature, nutritional status and social interactions may modulate it. The aim of this paper is to r...

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