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Articles 151 - 163 of 163
Full-Text Articles in Medicine and Health Sciences
Meat Prices And Factors Affecting Them In Turkey, Yavuz Cevger, Engi̇n Sakarya
Meat Prices And Factors Affecting Them In Turkey, Yavuz Cevger, Engi̇n Sakarya
Turkish Journal of Veterinary & Animal Sciences
Secondary data from different sources were used to examine the changes in red meat prices in Turkey between 1976 and 1989 taking account of the impacts of inflation and red meat imports during that period. It is observed that in current prices a higher price increase was realized in red meat prices compared to the fattening feed prices in the period 1976-1999. When the effects of inflation and purchasing power of money are taken into account, it is determined that red meat prices rose at an increasing rate, whereas feed prices decreased after 1995. On the other hand, it was …
Histological Investigations On The Effects Of Feeding With A Diet Containing Red Hot Pepper On The Reproductive System Organs Of The Cock, Ayteki̇n Özer, Berri̇n Zik, Hati̇ce Erdost, Nesri̇n Özfi̇li̇z
Histological Investigations On The Effects Of Feeding With A Diet Containing Red Hot Pepper On The Reproductive System Organs Of The Cock, Ayteki̇n Özer, Berri̇n Zik, Hati̇ce Erdost, Nesri̇n Özfi̇li̇z
Turkish Journal of Veterinary & Animal Sciences
In the present study the growth and reproductive organ structural differences in cocks fed a diet containing 1% red hot pepper (10 g/kg diet) from the first day of age were investigated. In cocks fed the experimental diet body weight gain decreased; testes weight, length, width and wall thickness of the tubuli seminiferi convoluti increased; and the completion of spermatogenic cell serial formation took place earlier compared to the control group.
Response Of The Pineal Gland In The Rats Exposed To Three Different Light Spectra Of Short Periods, Eri̇nç Aral, Sema Uslu, Emi̇ne Sunal, Ayla Eker Sariboyaci, İmer Okar, Ertunç Aral
Response Of The Pineal Gland In The Rats Exposed To Three Different Light Spectra Of Short Periods, Eri̇nç Aral, Sema Uslu, Emi̇ne Sunal, Ayla Eker Sariboyaci, İmer Okar, Ertunç Aral
Turkish Journal of Veterinary & Animal Sciences
The pineal gland is a part of the photo-endocrine system. Photon energy is important for the function of this system, and affects the level of nocturnal melatonin. In mammals light-induced suppression of melatonin production is dependent on the intensity and wavelength of the light used. We studied the chronic effects of light wavelengths on the pineal gland in rats after exposure to a short photoperiod using 3 different light spectra with the same irradiance. Male Sprague-Dawley rats were used. The animals were divided into 5 groups. They were exposed 8/16 L:D periods in rooms under automatically regulated light and climate. …
Embryonic Development Of Common Dentex (Dentex Dentex L.) Eggs, Şahi̇n Saka, Kürşat Firat, Deni̇z Çoban
Embryonic Development Of Common Dentex (Dentex Dentex L.) Eggs, Şahi̇n Saka, Kürşat Firat, Deni̇z Çoban
Turkish Journal of Veterinary & Animal Sciences
The embryonic development of common dentex eggs was investigated in detail in aquacultural conditions at constant temperature. The experiments were carried out at 18 ± 0.2 ºC. The average diameters of the eggs and oil globule were 1.032 ± 0.008 mm and 0.233 ± 0.002 mm, respectively. Embryonic development was observed every 15 min until the morula stage and then at hourly intervals. The morula stage, gastrula stage, neurula stage and formation of somite and kupffer’s vesicle were determined 04:15 h, 10:00 h, 17:00 h and 23:00 h after fertilization, respectively. The hatching rates were 82%-86% at 18 ± 0.2 …
Characterization Of Footrot Bacteria Dichelobacter Nodosus Using Pcr Amplification And Dna Sequence Analysis, Ifakat Tülay Çağatay, Jon G. H. Hickford
Characterization Of Footrot Bacteria Dichelobacter Nodosus Using Pcr Amplification And Dna Sequence Analysis, Ifakat Tülay Çağatay, Jon G. H. Hickford
Turkish Journal of Veterinary & Animal Sciences
Dichelobacter nodosus is an essential causative agent of footrot in ruminants, particularly in sheep, goats and cattle. In this study, more than 100 footrot samples were collected from 4 different farming regions in New Zealand (NZ). Selective media were chosen and isolation and routine growth conditions were optimized for NZ D. nodosus serotypes. Approximately 1000 primary plates were anaerobically subcultured several times and examined with Gram staining in order to detect single colonies of D. nodosus. Both the variable region and a part of the conserved region of fimbrial subunit gene (fimA) were amplified from bacterial DNA using polymerase chain …
Investigation Of Serum Cu, Zn, Fe And Se Concentrations During Pregnancy (60, 100 And 150 Days) And After Parturition (45 Days) In Single And Twin Pregnant Sheep, Fuat Gürdoğan, Ati̇lla Yildiz, Engi̇n Balikçi
Investigation Of Serum Cu, Zn, Fe And Se Concentrations During Pregnancy (60, 100 And 150 Days) And After Parturition (45 Days) In Single And Twin Pregnant Sheep, Fuat Gürdoğan, Ati̇lla Yildiz, Engi̇n Balikçi
Turkish Journal of Veterinary & Animal Sciences
This study was conducted to determine the serum Cu, Zn, Se and Fe concentrations at 60, 100, and 150 days of pregnancy and at 45 days of parturition in twin and single pregnant sheep. A total of 30 pregnant Akkaraman sheep in 2 groups (15 single pregnancies, 15 twin pregnancies), aged 3-5 years and weighing 40-50 kg were used. The blood samples were analyzed for serum Cu, Zn, Se and Fe concentrations. No statistically significant difference was found for Se, Cu, Fe and Zn concentrations between the twin and single pregnancy groups. Insignificant decreases (P > 0.05) in serum Zn and …
The Seroprevalence Of Coxiellosis In Farmers And Cattle In Erzurum District In Turkey, Şenay Seyi̇toğlu, Zülal Özkurt, Ufuk Di̇nler, Bi̇ray Okumuş
The Seroprevalence Of Coxiellosis In Farmers And Cattle In Erzurum District In Turkey, Şenay Seyi̇toğlu, Zülal Özkurt, Ufuk Di̇nler, Bi̇ray Okumuş
Turkish Journal of Veterinary & Animal Sciences
Coxiellosis is a zoonosis caused by Coxiella burnetii. This study conducted to determine the prevalence of coxiellosis in cattle and farmers in Eastern Turkey. A total of 230 cattle and 92 human sera were collected and tested for antibodies against C. burnetii by a commercial ELISA kit. The antibodies to C. burnetii were detected in 22 (9.56%) cattle and 18 (19.5%) healthy farmers. Seropositivity was found in 12 of 53 (22.6%) cattle with an abortion history, and 10 of 177 (5.6%) cattle without an abortion history (P < 0.05). There was a correlation between animal and human seroprevalence in the same district. It was observed that the seroprevalence of coxiellosis was higher in northern districts (32.4% in farmers and 15.4% in cattle) than in other districts (12.1% in farmers and 6.5% in cattle) both for humans and animals (P < 0.05). Coxiellosis was an important health problem in both humans and cattle, and the disease may cause abortion in cattle in Eastern Turkey.
In Vitro Effects Of Melatonin On Hyaluronidase Activity And Sperm Motility In Bull Semen, Sadetti̇n Tanyildizi, Tanzer Bozkurt, Osman Çi̇ftçi̇, Fati̇h Saki̇n
In Vitro Effects Of Melatonin On Hyaluronidase Activity And Sperm Motility In Bull Semen, Sadetti̇n Tanyildizi, Tanzer Bozkurt, Osman Çi̇ftçi̇, Fati̇h Saki̇n
Turkish Journal of Veterinary & Animal Sciences
The effects of melatonin on hyaluronidase activity of semen and spermatozoa motility of Holstein bulls were investigation in vitro. Semen samples were divided into 5 equal parts and incubated (v/v) with melatonin at the doses of 0.5, 1, 2 and 4 mM for 60 min. Percentages of spermatozoa motility, morphological abnormality and hyaluronidase activity of semen were determined at 5, 10, 15, 20, 30 and 60 min during incubation. Results show that melatonin caused a significant (P < 0.001) decrease in the spermatozoa motility, while causing a significant increase in the hyaluronidase activities of the semen. However, there was no significant difference in the percentages of abnormal spermatozoa when compared with control samples. Doses of 0.5, 1, 2 and 4 mM of melatonin in bull semen decreased the percentage of spermatozoa motility in a time- and dose-dependent manner. The mean percentages of abnormal spermatozoa were not affected by melatonin treatment. However, it caused an increased hyaluronidase activity of bull semen. In conclusion, the existence of melatonin in bull semen has a significant effect on fertilization ability by affecting spermatozoa motility and hyaluronidase activity.
Some Reproductive Parameters And Seminal Plasma Constituents In Relation To Season In Akkaraman And Awassi Rams, Mustafa Gündoğan
Some Reproductive Parameters And Seminal Plasma Constituents In Relation To Season In Akkaraman And Awassi Rams, Mustafa Gündoğan
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to describe seasonal changes in scrotal circumference, sperm motility, sperm concentration, percentage of abnormal spermatozoa and biochemical and enzymatic properties of seminal plasma for 9 months in 10 mature fat-tailed Akkaraman and Awassi breed rams. Scrotal circumference and semen were evaluated monthly from rams and seminal plasma separated from semen to study it. Scrotal circumference, sperm motility and sperm concentration were higher during autumn months. Furthermore, autumn months showed moderate percentage of abnormal spermatozoa. The biochemical analyses of ram seminal plasma indicated that the highest values of total protein, albumin (A), globulin (G), total …
Changes In Faecal Egg Counts At Different Hours Of The Day And Relationship Between Faecal Egg Count And Parasite Burden In Sheep Naturally Infected With Dicrocoelium Dendriticum, Bayram Şenli̇k, Veli̇ Yilgör Çirak, Mustafa Muz, Recep Tinar
Changes In Faecal Egg Counts At Different Hours Of The Day And Relationship Between Faecal Egg Count And Parasite Burden In Sheep Naturally Infected With Dicrocoelium Dendriticum, Bayram Şenli̇k, Veli̇ Yilgör Çirak, Mustafa Muz, Recep Tinar
Turkish Journal of Veterinary & Animal Sciences
The present study was carried out to determine the variations in the number of eggs excreted in the faeces at different hours of the day and the correlation between faecal egg counts and fluke burden in sheep naturally infected with Dicrocoelium dendriticum. For this purpose faecal samples were taken from 14 sheep at 1-h intervals from 07^{00} to 19^{00}. Faecal samples were examined by modified Benedek sedimentation method and mean egg counts per gram of faeces (EPG) for each hour (average of group) were calculated. In general, egg counts were found higher in faecal samples taken in the afternoon than …
The Effect Of Dietary Oils In Prevention Of Conjugated Linoleic Acid-Induced Embryo Mortality In Fertile Eggs From Artificially Inseminated Chickens, Rahi̇m Aydin
Turkish Journal of Veterinary & Animal Sciences
Dietary conjugated linoleic acid (CLA) decreases the ratio of unsaturated fatty acids/saturated fatty acids (UFA/SFA) in yolk and induces embryo mortality in fertile chicken eggs. The objective of this study was to determine if oils rich in UFA would prevent CLA-induced changes in the yolk fatty acid composition and embryo mortality in the fertile eggs. Each diet supplemented with 0.5% corn oil (Group A), 0.5% CLA (Group B), 0.5% CLA plus 10% canola oil (Group C), 0.5% CLA plus 10% olive oil (Group D) or 0.5% CLA plus 10% corn oil (Group E) was fed to 12 laying hens per …
Determination Of Some Virulence Factors In Staphylococcus Spp. Isolated From Various Clinical Samples, Süheyla Türkyilmaz, Osman Kaya
Determination Of Some Virulence Factors In Staphylococcus Spp. Isolated From Various Clinical Samples, Süheyla Türkyilmaz, Osman Kaya
Turkish Journal of Veterinary & Animal Sciences
The objectives of this study were to identify staphylococci isolated from different animal clinical samples, to examine some of the virulence factors in the isolates, to determine relationships between these virulence factors and coagulase positive Staphylococcus (CoPS)/coagulase negative Staphylococcus (CoNS) strains. A total of 180 strains of Staphylococcus spp. were isolated from bovine mastitis, dogs with otitis externa and chickens with various infections. The isolates were identified as S. aureus (29.4%), S. hyicus (16.7%), S. intermedius (3.9%), S. chromogenes (16.1%), S. lentus (13.3%), S. epidermidis (11.1%), S. simulans (7.8%) and S. haemolyticus (1.7%). The rate of positiveness for deoxyribonuclease (DNase) …
The Effects Of Seasons And Different Feeds On Fatty Acid Composition In Fillets Of Cultured Gilthead Sea Bream (Sparus Aurata L.) And European Sea Bass (Dicentrarchus Labrax L.) In Turkey, Mustafa Yildiz, Erdal Şener, Meti̇n Ti̇mur
The Effects Of Seasons And Different Feeds On Fatty Acid Composition In Fillets Of Cultured Gilthead Sea Bream (Sparus Aurata L.) And European Sea Bass (Dicentrarchus Labrax L.) In Turkey, Mustafa Yildiz, Erdal Şener, Meti̇n Ti̇mur
Turkish Journal of Veterinary & Animal Sciences
Dietary and seasonal effects on the fatty acid composition in the fillets of sea bream Sparus aurata and sea bass Dicentrarchus labrax were studied. Samples of the fish and feed were taken at 4 fish farms on the Aegean coast of Turkey during the summer, winter and spring seasons of 2004. The 2 commercial pelleted feeds (A and C) and 2 commercial extruded feeds (B and D) used in the fish farms were analyzed. There were not significant differences among the seasonally fatty acid composition in feed and fish samples except for MUFA (monounsaturated fatty acid) in the fillets of …