Erman Gülendağ

Objective: To establish the central corneal thickness (CCT) and intraocular pressure (IOP) of normal Holstein cattle and any relationship with age. Methods: Age of 50 Holstein cattle was recorded in days. CCT was measured by ultrasonic pachymetry, and IOP values were recorded by rebound tonometry from a total of 100 eyes. CCT and IOP values were subsequently analyzed in relation to age. The animals were divided into the following two groups: calves (< 360 days old) and adults (≥ 360 days old). Results: Mean CCT value of all animals was 723.1 ± 75.9 μm in the right eye, 714.5 ± 82.2 μm in the left eye. Mean IOP value of 100 eyes was 25.4 ± 8.07 mm/Hg in the right eye, 24 ± 7.89 mm/Hg in the left eye. Mean CCT and IOP values of the animals < 360 days old were 697.7 ± 8.28 μm and 21.6 ± 0.77 mm/Hg respectively. Mean CCT and IOP values of the animals ≥ 360 days old were 768.1 ± 14.4 μm and 31.9 ± 1.18 mm/Hg, respectively. A statistically significant difference was observed between the groups in terms of CCT and IOP values ( p < 0.001). A positive correlation was identified between CCT and age ( r = 0.57, p < 0.001) and between IOP and age ( r = 0.488, p < 0.001). Conclusions: This study documents the age‐related increase in both CCT and IOP values in cattle.

This study aimed to evaluate systemic inflammation, oxidative stress and lipid profile in cats that had either naturally gained excess weight or had developed obesity. The following groups were examined in the study: ten obese cats with a body condition score of (BCS) >8 (the obesity group), ten overweight cats with a BCS score of >6 (the overweight group) and ten ideal weight cats with a BCS score of 4-5 (the control group). In the cats that had either gained too much weight or had become obese, the serum AST (P < .001), albumin (P = .002) and total protein (TP) (P < .001) levels were found to be significantly higher than the values determined in the control group cats. Furthermore, blood serum high-density lipoprotein (HDL) (P = .009) and triglyceride (TG) (P < .001) levels in cats that had developed obesity were found to be significantly higher than the values defined in the control group cats. In the obese cats, serum procalcitonin (PCT), paraoxonase-1 (PON-1), total thiol, native thiol and MDA levels were found to be significantly higher than in overweight cats (P < .001). As a result, it was concluded that it would be useful for veterinarians to consider significant changes in parameters related to liver function and lipid metabolism, as well as to emphasize systemic inflammation and oxidative stress in their clinical evaluations in cats that had either naturally gained excess weight or had developed obesity.

Milk traits of sheep are affected by many environmental and genetic factors. These traits are quantitative traits and are determined by many genes. This study aimed to investigate polymorphisms of milk-related Fatty-acid synthase (FASN), Stearoyl-CoA desaturase (SCD1), and solute carrier 27A3 (SLC27A3) genes in cross-bred Hamdani sheep. Blood samples were collected from 100 healthy cross-bred Hamdani ewes from the jugular vein into K3-EDTA-containing tubes. Genomic DNA was extracted using a commercial DNA isolation kit. PCR products of FASN (275 bp), SCD1 (225 bp), SLC27A3-P1 (341 bp), and SLC27A3-P2 (319 bp) were subjected to restriction fragment length polymorphism (RFLP) analysis using SSil (AciI), Cfr13I, AluI, and Hpy188III the restriction enzyme, respectively. However, all gene regions were found to be monomorphic. In the study, only TT, AA, AA, and GG genotypes were detected for FASN, SCD1, SLC27A3-P1, and SLC27A3-P2, respectively. Allele and genotype frequencies were 1.00 for all genotypes and alleles. Although this study did not reveal favorable genotypes in FASN, SCD1, and SLC27A3 genes that can be used for milk traits, more comprehensive studies with larger sample sizes should be conducted to investigate polymorphisms in cross-bred Hamdani sheep.

β-lactoglobulin (βLG) stands as the primary whey protein in ruminant milk, synthesized by mammary gland cells during lactation and encoded by the βLG gene. This study aimed to assess the impact of βLG gene exon II polymorphism on milk composition traits in crossbreed Hamdani sheep. Sheep were examined for clinical diseases and mastitis. Milk and blood samples were only collected from healthy ewes. The composition and physical properties of milk were analyzed using milk autoanalyzer. The βLG gene exon II region's 452 bp PCR products were subjected to RFLP analysis using the RsaI restriction enzyme. Two genotypes, AA and AB, were identified for the βLG gene exon II region, with A and B allele frequencies of 0.7 and 0.3, respectively. Statistical analysis, conducted with Minitab® (Version: 19.2020.2.0), revealed that the AA genotype is associated with a higher milk fat percentage (p

Background: The odours of different body parts and structures, such as external genitalia, female urine, ventral tail radix, infraorbital sinus and interdigital sinus, have a strong attractiveness for rams. The sinus interdigitalis is considered an important trail gland for sexual behaviour, as its odour is included in the list of strongly attractive structures for male animals during the breeding season, being important in pheromone production.Objectives: In the present study, the effects of sex and breeding season on the morphological and histological structure of the interdigital gland were investigated in Hamdani crossbred sheep (Ovis aries).Methods: Sinus interdigitalis glands located on the forelimbs and hind limbs were collected from 10 male and 10 female sheep during both breeding and non‐breeding seasons. The gland's position in the forelimbs and hind limbs was determined radiographically. The glands were examined macroscopically, histologically and immunohistochemically in both seasons.Results: In all animals, the topographic location of the gland between the digits was determined to be distal to the phalanx proximalis and at the level of the phalanx media. The mean weight of the gland in male and female animals was 1.07 ± 0.03 and 1.4 ± 0.11 g, respectively. In general, the results of morphometric measurements were higher during the breeding season, and the increase was more pronounced in female animals. In histological examinations, it was determined that both neck and body parts of the tissues consisted of a structure consisting of a connective tissue capsule at the outermost, dermis, epidermis and lumen underneath. Immunohistochemically staining revealed that oestrogen receptors showed positive immunoreactions only in the intracytoplasmic localization of apocrine sweat glands. In terms of morphological, histological and oestrogen receptors, it was thought that the gland may play a role in sexual communication.

The objective of this study was to uncover the milk composition traits of Norduz sheep, which are bred in the Gürpınar district of the Van province, during the mid-term lactation period. The chosen ewes exhibited no signs of clinical or subclinical mastitis. A total of 104 sheep milk samples were meticulously collected to undergo comprehensive milk composition analysis. The chemical and physical attributes of Norduz sheep milk were methodically determined utilizing a milk autoanalyzer. The mean values for various milk constituents were as follows: milk fat (%), 2.48±0.11; solids-not-fat (SNF) (%), 10.76±0.08; milk protein (%), 5.09±0.04; lactose (%), 4.79±0.04; pH, 6.93±0.02; conductivity (mS/cm), 4.41±0.04; freezing point (°C), -0.602±0.80; salt (%), 0.8035±0.66; and density (kg/m3), 1039.73±0.39. Noteworthy negative and statistically significant correlations were observed between milk fat and protein (r=-0.36, p

It was aimed to evaluate the regressive effect of grayanotoxin-rich Turkish mad honey and 5-fluorouracil (5-FU), separately and together by using the N-methyl-N-nitrosourea (MNU)-induced colon cancer modelling in rats. Study groups were designed as control group (CG), cancer control group (CCG), 5-Flourouracil group (FUG), Turkish mad honey group (HG), Turkish mad honey and 5-FU combined group (FU-HG). White blood cell (WBC), lymphocyte, eosinophil, basophil, serum lactate dehydrogenase (LDH), total oxidant status (TOS), and total protein values of the rats in the CCG were significantly lower than the values of the rats in the CG, whereas serum Bcl-2 and survivin levels were significantly higher in the rates belonged to the CCG in comparison to those in the CG. The presence of anaplastic epithelial cells, vascularization, precancerous changes, and inflammatory infiltration detected in the colon and small intestine of the rats in FU-HG, FUG, HG were less intense (P<0.05) compared to the findings in the rats in CCG. In conclusion, mad honey and 5-FU reduced anaplastic cell growth and oxidative stress via suppressed anti-apoptotic activity. Considering the histopathological findings in the liver and kidney, no toxicity occurred related to mad honey and 5-FU metabolization. Therefore, the combined use of these two substances may be an alternative method in the treatment of colon cancer.

Bu çalışmada, sıçanlarda 7,12-dimetilbenz[a]antrasen (DMBA) ile indüklenen bir meme tümörü modelinde vinkristin ve deli balın tek başına ve birlikte uygulanmasındaki baskılayıcı etkileri biyokimyasal, hematolojik ve histopatolojik olarak araştırıldı. 43-49 günlük toplam 72 rat 12 rattan oluşan 6 gruba ayrıldı. Kontrol grubu (CG) sağlıklı sıçanlardan oluştu. Araç grubu (VG) sadece araç maddesi aldı ve kanser kontrol grubu (CCG) sadece DMBA aldı. Bal grubuna (HG) sadece Türk deli balı verildi. Vinkristin grubu (VinG) sadece vinkristin ve vinkristin-bal grubu (VHG) hem Türk deli balı hem de vinkristin aldı. 13 haftalık deneme süresinin son 4 haftasında Türk deli balı ve/veya vinkristin verildi. Lökosit ve lenfosit sayıları CCG ve VG gruplarında anlamlı farklılık gösterdi. Alanin transaminaz ve total protein seviyeleri CCG ve VinG gruplarında daha yüksekti. Aspartat transaminaz CCG, HG ve VG gruplarında daha yüksekti. Kreatinin diğer tüm gruplarda HG grubundaki değere göre daha yüksekti. Kaspaz-3 ve Bax protein seviyeleri CG ve VG gruplarında daha yüksek, kaspaz-8 ve -9 ise daha düşüktü. Bax-xL, CCG grubunda daha fazla arttı. HG ve VinG gruplarında anaplazi azaldı, ancak apoptoz ve diğer hücresel hasarlar arttı. Bu DMBA kaynaklı meme kanseri modelinde deli bal ve vincristine'in birlikte etkili terapötik ajanlar olarak kabul edilebileceği sonucuna varıldı.

We aimed to investigate the effect of the post-chilling Peroxyacetic Acid (PAA) application on chicken carcasses’ shelf life, PAA treatment on chicken neck skin samples contaminated with S. Enteritidis and S. Typhimurium serotypes, and its activity against single and mixed Salmonella biofilms. Initially, effects of the post-chilling PAA application on chicken carcasses’ shelf life was analyzed. Secondly, the effectiveness of PAA application in chicken neck skin samples which are experimentally contaminated was investigated. Then, biofilm forming capacity of Salmonella enterica serovars were determined, and PAA activity against single and mixed Salmonella biofilms was evaluated. According to the results, in all experimental groups at least 1 log cfu/g reduction was observed on the day of PAA application (0 hour), and we monitored significant decreases of Salmonella counts in all groups after both 100 and 200 ppm PAA treatments within the 6th hour. The combinations of PAA concentrations and duration of application used in the study were insufficient in terms of S. Typhimurium and S. Enteritidis counts in chicken neck skin samples; however, these treatments can be effective on extending the chicken meat’s shelf life. On the other hand, 200 ppm of PAA was effective in reducing S. Typhimurium and S. Enteritidis biofilms. As a mean of 4.8 log/ml reduction were detected against S. Enteritidis and S. Typhimurium biofilms. Moreover, we can conclude from statistical analysis that when biofilm is composed with more than one Salmonella, it is harder to reduce their counts with PAA treatments. However, there is a recommendation of EFSA (European Food Safety Authority) that PAA may be a decontamination agent in poultry production in the future, considering that PAA will not have toxic effects on human health. PAA studies on this subject will be of great importance in the future if it is passed to legislation.