Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2026Yumurta Kalite Parametreleri Üzerine Farklı Yetiştirme Sistemleri ve Mevsimin Etkisi
Tekce, Emre; Tekdemir, Orhan Atlıhan
Bu araştırma, farklı yetiştirme sistemlerinde (kafes sistemi, aile tipi ve serbest gezen sistem) üretilen tavuk yumurtalarının dış ve iç kalite parametreleri üzerindeki mevsimsel (ilkbahar, yaz, sonbahar ve kış) etkisini incelemek amacıyla yapılmıştır. Çalışmada farklı yetiştirme sistemlerinden her bir mevsimde 50’şer adet olmak üzere toplam 600 adet yumurta toplanmıştır. Yumurta örneklerinin dış kalite parametreleri üzerine mevsimin etkisi incelendiğinde; kış mevsiminde kırılma mukavemeti, kabuk kalınlığı, sarı yüksekliği ve sarı indeksi önemli bulunmuştur (p
- MakaleAçık Erişim2026Investigation of Managerial Practices Related to Calves’ Survival in Dairy Cattle Farms: The Case of Çorum Province
Bayraktar, Bülent; Tekce, Emre; Aydemir, Seyma; Erdoğan, Yaşar; Aksakal, Vecihi; Ürüsan, Hılal; Kotan, Gökşad Cemil
This study was conducted using a Cross-Sectional Observational Design to determine the effects of current managerial practices applied in commercial dairy cattle farms in Çorum Province on calf survival. The main material of the study consisted of 120 active farms, which represent the general structure of the dairy cattle sector in the region. Data were collected via face-to-face surveys, and the scale’s reliability was confirmed (Cronbach’s Alpha: 0.742) and suitability for Factor Analysis (KMO: 0.710) was verified. The results showed that while 88.33% of the farmers were members of a cooperative/union and 57.50% reported timely colostrum administration (within the critical <4 hours), these positive indicators contrasted sharply with low biosecurity and poor practical application. Specifically, calf mortality was high (42.50% of farms reported mortality rates >5%), mainly due to diarrhea and pneumonia, with 65.83% of deaths occurring in the first 30 days. Critical management deficiencies included uncontrolled colostrum feeding (85.00% via suckling, risking failure of passive transfer), severe biosecurity breaches (85.83% of calves housed with adult animals), and delayed introduction of solid feed. In conclusion, the primary challenge in Çorum is not lack of institutional access or basic knowledge, but rather a critical disconnection between theoretical knowledge and practical management implementation. To improve calf survival, management strategies should shift from traditional suckling to controlled colostrum protocols and emphasize the transition from group housing to individual calf hutches to ensure biosecurity.
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İncele - MakaleAçık Erişim2026General Structure of Cattle Farming Enterprises and Basic Care and Feeding Practices of Breeders: The Example of Çorum City Center
Bayraktar, Bülent; Tekce, Emre; Aydemir, Seyma; Kotan, Gökşad Cemil; Kebapcı, Eren
This study examined the general structure of cattle farming operations enterprises in the central district of Çorum city center and the basic care and feeding practices of breeders based on a survey conducted on 130 cattle enterprises between May and June 2023. Cattle enterprises in Çorum city center are generally small to medium-sized; 43.08% of these operations have a capacity of 11-30 animals, while 71.54% are owned by the breeders themselves. Breeders in these operations are predominantly male (82.31%), with the largest age group being between 31 and 40 years old, at 36.15%. Livestock farming is the population source of income for 83.85% of breeders, and their education levels are increasing, with 32.31% of breeders now high school graduates. Breeders combine family knowledge with information from official institutions and organizations as a source of knowledge and experience, and 58.46% rely on experience in their livestock feeding decisions. Animals are generally fed twice a day, with a 90% mix of roughage and concentrate, while automatic waterers (48.46%) are preferred for providing drinking water. However, since 67.69% of concentrate needs are met externally, there is external dependency, and 81.54% of breeders face a pasture shortage. 60.77% of the barns are located adjacent to or below the house, and reinforced concrete (67.69%) is used as the construction material. Regarding cleaning practices, straw (73.85%) is the most preferred bedding material in the barns, general cleaning is done 1-3 times a year, and manure is removed manually and deposited in the open areas (86.15%). 86.15% of breeders are members of breeder associations, and the most frequently received support is pedigree and preliminary pedigree support (89.23%). 68.46% of enterprises maintain an animal registration system. As a result, cattle enterprises in Çorum have a structure that combines traditional methods with modern practices. The breeders' high organizational awareness and propensity for record keeping indicate that the sector has potential for future growth. However, further improvements are needed in areas such as the use of professional nutrition resources and manure management.
- MakaleAçık Erişim2025Evaluation of Small Livestock Farms in Çorum Province in terms of Structural Characteristics, Herd Management Practices, Biosecurity and Animal Welfare
Tekce, Emre; Aydemir, Seyma; Bayraktar, Bulent; Kotan, Gökşad Cemil; Öztürk, Duygu
This study was conducted to examine the structural characteristics, biosecurity, and animal welfare practices of 120 small ruminant farms in Çorum province. The study included face-to-face surveys, observations, and measurements on farms with at least 50 animals, where a total of 17 different parameters were considered: 7 related to shelters, 7 related to building and equipment conditions, and 3 related to animal health. The majority of participating farm owners were young and middle-aged men who rely on livestock farming as their primary source of income (69%). The sector shows growth potential, demonstrated by the fact that 65% of farmers reported an increase in flock size over the last five years. However, a significant deficiency in modern herd management was identified, as 70% of farms do not use formal record-keeping systems. In terms of biosecurity, although 90.83% of breeders follow a regular vaccination schedule, crucial preventive measures like physical area disinfection and manure removal are performed infrequently, often only once a year. Lack of knowledge about biosecurity and excessive costs were reported as the main obstacles to effective implementation. The welfare assessment, based on the ANI 35L-derived protocol, rated the farms' housing and equipment status as "medium", with critical deficiencies noted in insulation and facilities for heat and cold protection (77.5% lack insulation). However, animal health parameters were generally rated as "moderate", with only skin condition being scored as "good". In conclusion, small ruminant farms in Çorum exhibit growth potential but urgently require improvements in key areas such as record-keeping, biosecurity measures, and modern barn infrastructure to enhance animal welfare and productivity.
- MakaleAçık Erişim2023Scopus SJRQ3Relationship of progranulin response with some physio-biochemical parameters in Akkaraman sheep
Bayraktar, Buelent; Tekce, Emre; Genç, Murat; Kaya, Hacer; Özcan, Gulbahar Boyuk; Aydemir, Seyma; Kotan, Goksad Cemil; Takma, Cigdem; Ürüsan, Hilal; Aksakal, Vecihi
Progranulin (PGRN) is a multifunctional protein that is critical in the retention of embryos in the endometrium of the uterus and the protection of cervical tissue during fetal growth. In case of PGRN release and dysfunction, cervical tissue may remodel (regeneration) and lead to the risk of abortion. Serum PGRN level in sheep and its variation according to different physiological periods and its relationship with some biochemical parameters are unknown. In this study, the relationship between early lactation, early and late pregnancy serum PGRN levels and some biochemical parameters in Akkaraman sheep was investigated for the first time. In the literature search, no similar studies were found on the relationship between early lactation, early and late pregnancy serum PGRN levels and some biochemical parameters in Akkaraman sheep. The research was carried out on 90 Akkaraman sheep reared in the same herd under the same care and feeding conditions. In the study, Akkaraman ewe were divided into 3 groups as early lactation, early pregnancy and late pregnancy. 1st group is early lactation period ewe (first 60 days of lactation), (n = 30), 2nd group is in the first period of pregnancy (on the 0-90th day of the first pregnancy (n = 30)), 3rd group is in the late pregnancy of pregnancy (100-150 days of pregnancy (n = 30)) was created. Blood samples from vena jugularis were taken before morning feeding from the animals that formed the study groups. PGRN levels in serum were determined by ELISA method. In addition, glucose, calcium (Ca), magnesium (Mg), phosphorus (P), total cholesterol (TC), triglyceride (TG), low density lipoprotein (LDL), high density lipoprotein (HDL), very low density lipoprotein (VLDL) levels were analyzed in biochemistry autoanalyzer. As a result of the study, lactation and early pregnancy and late pregnancy mean serum PGRN levels were determined as 1.93, 1.78, 1.33 ng mL-1, respectively. The serum PGRN, glucose, Ca, Mg, P, TC, TG, LDL, HDL and VLDL levels of sheep with late pregnancy, early lactation and early pregnancy periods, which constitute the study groups, were found to be statistically significant (P<0.05). Our results have shown that due to the physiological role of PRGN in keeping the embryo in the endometrium of the uterine and in preserving the cervical tissue during fetal growth, there may be a useful parameter in the pursuit of the pregnancy process.
AtıfScopus4WoS4OpenAlex3
İncele - MakaleYayıncıda açık erişim2023Scopus SJRQ3Investigation of endocrine response of thyroid and intestinal and adipose tissues due to the addition of Moringa oleifera essential oil in diet for quails exposed to heat stress
Bayraktar, Bulent; Tekce, Emre; Bayraktar, Sevil; Böyük, Gulbahar; Takma, Cigdem; Aksakal, Vecihi; Genç, Murat; Kaya, Hacer; Ülker, Ufuk; Gürbüz, Ahmet Burak
-In this study, we aimed to determine the effect of Moringa oleifera essential oil (MOEO) supplementation to rations of Japanese quail (Coturnix coturnix japonica) grown under heat stress (HS) on some adipokine (visfatin, adiponectin, and chemerin), intestinal (citrulline), 3,5,3 '-triiodothyronine (T3), thyroxine (T4), and thyroid-stimulation hormone (TSH) levels in the serum. For this purpose, 320 day-old male quail chicks were used. The study was conducted over 42 days, including a 7-d adaptation period and a 35-d experimental period. Eight trial groups were established, each including 10 quail: CT (control temperature, 25 celcius), MOEO 200, MOEO 400, MOEO 600, HSC (HS control), SMOEO 200, SMOEO 400, and SMOEO 600. Based on the results, a dose-dependent decrease was observed on days 21 and 42 in serum adiponectin and T3 in the stress and stress-free groups compared with the control group due to MOEO supplementation. The lowest decrease was observed in the MOEO 600 mg/kg dose group. In addition, an increase in stressed groups was observed when examining serum citrulline levels, while chemerin levels did not have a statistically significant effect. While the decrease in serum visfatin, T4, and TSH levels on the 21st day did not have a statistically significant effect, a significant effect was determined on the 42nd day. The addition of MOEO at 600 mg/kg to the ration may be beneficial in preventing intestinal damage and inflammation that may occur due to HS.
AtıfScopus14WoS15OpenAlex19İncele - MakaleAçık Erişim2021Anadolu Merinoslarında İrisin Hormon Yanıtı Üzerine Bazı Fizyolojik Parametrelerin Etkisi
Bayraktar, Bülent; Tekce, Emre
Bu çalışmanın amacı, Anadolu Merinosu koyunlarında irisin hormon yanıtı üzerinde vücut kondüsyon skoru (VKS), laktasyon, gebelik, yaş ve cinsiyetin etkisinin incelenmesidir. Çalışmaya dahil edilen tüm gruplarda yer alan Anadolu Merinosu koyunları vücut kondüsyon skorlarına (VKS<2,VKS=3-3.5,VKS≥4) göre 3 gruba ayrılmıştır. 1.grup gebeliğin ilk dönemindeki koyunlar (ilk gebeliğin 100. gününde) (n=30), 2.grup erken laktasyon döneminde bulunan koyunlar (n = 30),3.grup farklı yaşta bulunan <2 (genç) (n=30), 2-8 (ergin) (n=30), 8> (yaşlı) (n=30), erkek ve dişi koyunlar (n=180) olmak üzere toplam 240 hayvan oluşturdu. Koyunlardan sabah yemlemesi öncesi vena jugularis’ten kan örnekleri alındı. Kan serumu örneklerinde ELİSA yöntemiyle irisin hormon düzeyleri belirlendi. Çalışma sonucunda laktasyon ve gebelik döneminde ortalama serum irisin hormon düzeyleri en düşük VKS<2 grubunda, en yüksek ise VKS ≥4 gruplarında bulunan koyunlarda saptanmıştır. Aynı şekilde farklı yaş ve cinsiyet gruplarında ise en düşük ortalama serum irisin hormon düzeyleri VKS<2 grubunda bulunan genç kuzu ve toklularda iken, en yüksek düzey ise VKS ≥4 grubunda yaşlı koyun ve koçlarda tespit edilmiştir. VKS değişimine bağlı olarak farklı yaş, cinsiyet, gebelik ve laktasyon dönemlerinin serum irisin hormonu düzeyi üzerine etkisi olduğu belirlenmiştir (p<0,05).Sonuçlarımız, irisin hormonun miyokin olması ve fizyolojik rolü nedeniyle, kas sistemine ait durumun incelenmesinde yararlı bir parametre olabileceğini göstermiştir.
AtıfOpenAlex1TR Dizin1İncele - MakaleAçık Erişim2021Scopus SJRQ2Adipokine, gut and thyroid hormone responses to probiotic application in chukar partridges (Alectoris chukar) exposed to heat stress
Bayraktar, Bülent; Tekce, Emre; Kaya, Hacer; Gürbüz, Ahmet Burak; Dirican, Ebubekir; Korkmaz, Serol; Atalay, Banu; Ülker, Ufuk
The aim of this study was to investigate the effect of Lactobacillus reuteri E81 (LRE) probiotic supplementation on heat stress responses in chukar partridges (Alectoris chukar). The birds were divided into two groups, one of which was exposed to heat stress (HS). Within each group, four subgroups, each including 64 birds, were created for the three treatment doses (200, 400 or 600 mg/kg) of LRE and the control. The experiment was started with day-old birds, kept at a temperature of 25 8C or 37 8C. After a 7-day adjustment period, the LRE supplementation lasted for 35 days. The levels of different adipokines, including visfatin (VF), adiponectin (ADP), chemerin (CHEM), as well as the concentration of plasma citrulline (CIT) and the levels of thyroid hormones (T3 and T4) and thyroid-stimulating hormone (TSH) in the blood were measured at 21 and 42 days of age. A significant correlation (P < 0.01) was found between LRE supplementation and the decrease in serum VF, ADP, CIT, T3 and T4 levels in partridges exposed to HS. On the other hand, no significant relationship was found between LRE supplementation and the serum CHEM and TSH levels (P > 0.05). We concluded that the addition of 600 mg/kg LRE is beneficial in preventing intestinal damage and inflammation provoked by HS.
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İncele - MakaleAçık Erişim2021Scopus SJRQ4Investigation of the relationship of asprosin and cardiac troponin response with some physiological and biochemical parameters in Anatolian native horse
Bayraktar, Bülent; Tekce, Emre
Summary: Asprosin is a recently discovered glucogenic hormone released from starvation-induced white adipose tissue and amongst others it protects against hyperinsulinism associated with metabolic syndrome. The aim of this study was to examine the effect of age, gender and season on metabolic (asprosin) and cardiovascular (cardiac troponin, I (cTnI), CK, CK-MB) function markers and their relationship with some biochemical parameters in Anatolian native horse breed. This study was carried out between February–August 2020. A total of 40 horses was used for this purpose, including 20 mares and 20 stallions in the age range of 1–6, 7–12. Serum asprosin level, for the winter season in stallions and mares aged 1–6 and 7–12 years respectively 8.9, 8.36; 14.08, 13.58ng/ml were as determined. In addition, for the summer season respectively 17.98, 18.68; 22.22, 21.32ng/ml were detected and no difference between the groups (P>0.05). On the other hand, serum cTnI levels for the winter season in stallions and mares aged 1–6 and 7–12 years respectively 0.014, 0.018; 0.016, 0.02ng/ml were as determined. In addition, for the summer season respectively 0.012, 0.016; 0.014, 0.018ng/ml were detected. It was shown that the serum biochemical parameters and levels of cTnI levels in the domestic horse breed the horses belonging to the Anatolian varied depending on age, gender, and season (p < 0.05) but the effect of hormone levels serum asprosin wasn’t found statistically significant (p>0.05).Our results showed that cTnI could be a useful parameter in the examination of the cardiovascular system status of horses.
AtıfScopus1WoS1OpenAlex1İncele - MakaleAçık Erişim2021Scopus SJRQ3Response of probiotics and yeast added in different doses to rations of anatolian merino lambs on fattening performance, meat quality, duodenum and rumen histology[1]; [Z anadolu merinos kuzularının rasyonlarına farklı dozlarda ilave edilen probiyotiklerin ve mayanın besi performansı, et kalitesi, rumen ve duodenum üzerine yanıtı]
Tekce, Emre; Bayraktar, Bülent; Aksakal, Vecihi; Dertli, Enes; Kamiloğlu, Aybike; Karaalp, Musa; Timurkaan, Sema; Gül, Mehmet
This study investigated the effects of dietary probiotics (Lactobacillus reuteri E81 [LRE], Lactobacillus rhamnosus GG [LRG]), yeast (Saccharomyces cerevisiae S81 [SCS]), and their combined supplementation on fattening performance (BW, DWG, FI, and FCR), meat quality, and rumen and duodenum histology in lambs. The study material comprised ninety 2.5-month-old Anatolian Merino lambs, and the trial was conducted for 70 days. Nine trial groups, each composed of 10 animals, were established. This study demonstrated that, when compared to the control group, the best fattening performance was achieved in the lambs that received 600 ppm of dietary LRE. Neither visceral organ weights nor rumen and duodenum histology was affected in the groups that received the tested feed supplements. Of the meat colour parameters investigated, the L* value was observed to have increased in the groups that were given feed supplements, excluding Groups LRE-600 and SCS-300. It was determined that the probiotic supplements had no effect on the a* and b* colour parameters, but affected the meat pH value. In conclusion, the assessment of the effects of different doses of dietary probiotics, yeast, and probiotic-yeast combinations on performance parameters, visceral organ weights, and meat quality in Anatolian Merino lambs showed that the best results were achieved in the group that received 600 ppm of LRE alone.
AtıfScopus12WoS11OpenAlex4TR Dizin1İncele - MakaleAçık Erişim2020Scopus SJRQ3Effects of lactobacillus reuteri e81 added into rations of chukar partridges (Alectoris chukar) fed under heat stress conditions on fattening performance and meat quality
Tekce, Emre; Bayraktar, B.; Aksakal, V.; Dertli, E.; Kamiloğlu, A.; Çinar, K.; Takma, Ç.; Kaya, H.; Gül, M.
This study investigated the effects of the addition of Lactobacillus reuteri E81 (LRE) into rations of chukar partridges (Alectoris chukar) fed under heat stress (HS) conditions on fattening performance and meat quality. This study included 256 chukar partridges aged 1 day. The study comprised an adaptation period of 7 days and a fattening period of 35 days and included 8 different groups with 32 animals in each group. Each group was further divided into four subgroups with eight animals in each subgroup. At the end of the study, the best results in terms of fattening performance in the non-HS groups were obtained in the LRE 600 ppm group and in the HS groups, SLRE 200 ppm had the best effect on average live weight and average live weight increase, whereas SLRE 400 ppm had the best effect on FCR (p<0.05). The analysis of the samples collected from chukar partridges on day 21 showed that, there was no effect on the colour parameters and Thiobarbituric acid reactive substances (TBARS) level in the LRE in the HS and non-HS groups, whereas the meat pH level decreased in the SLRE 400 ppm group (p<0.05). The analysis of the samples collected on day 42 showed that there was no effect on colour parameters in the HS and non-HS groups. TBARS level decreased at the dose of LRE 200 ppm in the non-HS group, and the meat pH level decreased in both HS and non-HS groups (p<0.05).
AtıfScopus2WoS2OpenAlex8İncele - MakaleAçık Erişim2020Scopus SJRQ3The impact of dietary tarragon (Artemisia dracunculus) on serum apelin, brain-derived neurotrophic factor, cardiac troponin concentrations and histopathology of liver tissue in laying hens housed at different stocking densities
Bayraktar, Bulent; Tekce, Emre; Kaya, Hacer; Karaalp, Musa; Turunc, Eylul
Due to its association with several other stress factors (poultry house gases, inadequate ventilation, heat, cold and poor hygiene), the high stocking density is a major stress factor that adversely affects the health and performance of poultry and the quality of the poultry products. Therefore, this experimental study was aimed at analysing the impact of different doses of dietary tarragon (Artemisia dracunculus) on the serum apelin, plasma brain-derived neurotrophic factor (p-BDNF), and cardiac troponin I (cTnI) concentrations, and the correlation between these indicators in laying hens housed at different stocking densities. The aim of this study is to investigate the effects of adding tarragon in different ratios to laying hen rations in the 2ndovulation period on the cTnI, apelin, and BDNF hormone concentrations and the liver histopathology. The experiment was carried out over a period of eight weeks, with 192 Lohman Brown commercial hybrids at 50 weeks of age. Eight groups (four replicates each), composed of laying hens of equal body weight, which were housed at stocking densities of 580 cm2/hen and 810 cm2/hen and received 0, 1, 5 and 10 mmol/kg of tarragon (Artemisia dracunculus) in the feed, were established. At the end of the trial, 96 of the housed egg-laying hens (3 birds in each subgroup, a total of 12 birds in each group) were randomly selected and blood samples were taken from the vena subcutanea ulnaris. The samples collected were analysed for the apelin, p-BDNF, and cTnI contents. The analysis results demonstrated that tarragon supplementation had no effect on the serum apelin, p-BDNF and cTnI concentrations (P > 0.05). The Sub-Groups ST1, ST1.2, and ST6 presented with severe hyperaemia of the sinusoidal, portal and acinar blood vessels, whilst the hyperaemia of these blood vessels was moderate in Sub-Group ST12. Apelin, BDNF, and cTnI can act as protective factors against negative consequences of stress (e.g., stocking density or heat stress).
AtıfScopus5WoS7OpenAlex2İncele - MakaleAçık Erişim2020Scopus SJRQ4Effects of race, gender, body condition score and pregnancy on serum apelin levels in ewe
Bayraktar, Bülent; Tekce, Emre; Aksakal, Vecihi; Takma, Çiğdem; Bayraktar, Fatma Gülten; Şengül, Bülent
Apelin is an important adipokine hormone that is released from adipose tissue, which is considered as the energy store of the body, which plays a role in many physiological processes in the body, as well as cardiovascular, immune functions and energy, nutrients and fluid metabolism. In this study, it was aimed to determine the effect of lactation, pregnancy and gender on apelin hormone levels in blood serums belonging to different races of ewe. In the present study, the hormone levels of the pregnant, non-pregnant ewe and rams of the Akkaraman Kangal and Morkaraman races were thin, with different body condition scores (<2, 3 to 3.5 and ≥4). Apelin hormone level was determined by ELISA technique in blood serum samples of ewe's Jugular vein. It was determined that there was a difference in body scores between races and the interaction between race and body score was important (P<0.05). Apelin level in ewe in lactation and pregnant ewe did not change according to body condition scores (P>0.05). In terms of apelin, gender and body condition score, race and gender, and body condition score interactions were found to be significant.
AtıfScopus6WoS6OpenAlex4TR Dizin2İncele - MakaleAçık Erişim2020Scopus SJRQ3Investigating the adipokine and cardiac troponin response ın experimental thyroid dysfunction; [Odgovor adipokina i srčanog troponina na eksperimentalno izazvanu disfunkciju štitne žlijezde brojlera]
Bayraktar, Bülent; Tekce, Emre; Takma, Çiğdem; Bayraktar, Sevil; Kilinç, Ayten A.; Ülker, Ufuk; Kurtdede, Efe
This study was conducted to investigate adipokine [Apelin and brain-derived neurotrophic factor (BDNF)] and cardiac troponin (cTnI) response that emerged after adding an essential oil mixture (EOM) (Eucalytus glabutus labii, Thymus vulgaris, Cymbopogon nardus, and Syzygium aromaticum) at different rates to the drinking water of broilers in which thyroid dysfunction (hypo-and hyperthyroidism) had been experimentally induced. In the present study, 150 1-day-old Ross-308 male broiler chicks were used. They were divided into five groups, each with 30 animals. The groups were designed to include five subgroups: control (C), hypothyroid, hypothyroid + 250 ppm EOM, hyperthyroid, and hyperthyroid + 250 ppm EOM, with six animals in each group. At the end of the experiment, Apelin, p-BDNF, cTnI, T3, T4, and thyroid-stimulating hormone (TSH) levels were investigated in blood serum samples obtained by cervical dislocation from four randomly selected animals from each subgroup, making 100 animals in total. It was found that EOM administration resulted in a dose-dependent increase in p-BDNF and apelin levels, and a decrease in T4 levels in the experimentally induced hypo-and hyper-thyroidism groups, but did not affect T3 and cTnI levels. Conversely, an increase in TSH level was observed in the hypothyroidism groups, whereas a decrease was observed in groups with hyperthyroidism. This study is the first to examine adipokine (Apelin and BDNF) and cTnI response to EOM administration in thyroid dysfunction.
AtıfScopus3WoS3OpenAlex1İncele - MakaleYayıncıda açık erişim2020Scopus SJRQ2Response of Japanese quails (Coturnix coturnix japonica) to dietary inclusion of Moringa oleifera essential oil under heat stress condition
Tekce, Emre; Bayraktar, Bülent; Aksakal, Vecihi; Dertli, Enes; Kamiloğlu, Aybike; Çinar Topcu, Kübra; Takma, Çiğdem; Gül, Mehmet; Kaya, Hacer
The present study was aimed at investigating the effects of the dietary use of different doses of Moringa oleifera essential oil (MOEO) on performance parameters, internal organ weights and meat quality in Japanese quails (Coturnix coturnix japonica) exposed to Heat Stress (HS). For this purpose, 320 male day-old quail chicks were used. Seven days of preliminary (physical exercise) and a 35-day fattening period were applied. The animals were divided into 8 groups, each including 40 animals according to temparature (C: 25 °C and SC: 37 °C) and dietary doses (C, 200, 400 and 600). Each group was divided into 4 subgroups, each comprising 10 animals. The consequences of this study showed that, in the stress-free (HSF) groups, while all of the different doses of dietary MOEO positively affected growth performance, feed intake and feed efficiency, in the HS groups, similar positive effects were observed with the use of 200 ppm of dietary MOEO. While no effect was detected on internal organ weights on Days 21 and 42 in the HSF and HS groups, a dose-dependent increase was determined in the intestinal pH value on day 42 in the HS group (p <.05). Additionally, in the analysis of meat quality on the 21st and 42 days compared to the controls, no effect was observed on the meat colour parameters value and TBARS level in the HS and HSF groups. Based on the consequences of this study, it is considered that, MOEO could be used as an alternative product in poultry, at a dose of 200 ppm, to reduce the detrimental effects of HS.HIGHLIGHTS Temperature stress, performance parameters and serious problems in the health of poultry. Moringa olifera helps regulate performance parameters in poultry exposed to heat stress. Since the addition of Moringa oleifera to the diets does not affect the organ weight and meat quality in 21 and 42 days, it does not cause any negative effects for the consumer.
AtıfScopus17WoS17OpenAlex19İncele - MakaleAçık Erişim2020Scopus SJRQ2Effect of the addition of essential fatty acid mixture to the drinking water of the heat stress broilers on adipokine (Apelin, BDNF) response, histopathologic findings in liver and intestines, and some blood parameters
Bayraktar, Bülent; Tekce, Emre; Aksakal, Vecihi; Gül, Mehmet; Takma, Çiğdem; Bayraktar, Sevil; Bayraktar, Fatma Gülten; Eser, Gizem
The purpose of this study was to examine the effect of adding an essential fatty acid mixture (EOM; Eucalyptus globulus Labill, thymus vulgaris, Cymbopogon nardus, and Syzygium aromaticum) to the drinking water in the heat stress broilers on the adipokine (Apelin, BDNF) response, the histopathologic changes in liver and intestines, and some biochemical parameters. This study lasted for a total of 42days, including the physical exercise period (7days) and the fattening period (35days). A total of 400 Ross 308 male broilers (1-d-old) were randomly divided into 8 groups (50 animals per group), each of which was exposed to various conditions of temperature (C: 22°C and SC: 36°C) and treatment dose (C, 250, 500 and 750mL/1000 L). Each group was divided into 5 subgroups, each comprising 10 animals. In the stress-free groups, whereas the Apelin level linearly decreased, the BDNF level linearly increased. In histopathology, the liver tissue was found to be normal in all groups whereas the duodenum villi length was found to increase in the group of 750mL/1000 L. No statistically significant difference was found between the stressed groups and the non-stressed groups in terms of VLDL, Glucose, Total bilirubin, ALT, and TG (p >.05). While Apelin level increased in the stressed groups, the BDNF level increased in the group of 250mL/1000 L. In the histopathological examination, a small amount of coagulation necrosis was detected in hepatocyte, a diffuse hydropic degeneration was observed in hepatocytes, and finally a dilatation and hyperaemia were seen in sinusoid in the groups of EOM-500mL/1000 L and EOM-750 m/1000 L compared to the control group. Whereas there was no difference between the group of EOM-250mL/1000 L and the control group in terms of duodenum villa length, there was a significant decrease in other groups (p <.00). In conclusion, this study showed that adding 250mL/1000 L of EOM to the drinking water had a positive effect on the serum levels of Apelin and p-BDNF in the groups exposed to stress (p <.05).HIGHLIGHTS Heat stress results in serious annual economic losses in the poultry industry. Essential oil fatty mix acids have positive effects on poultry health. Apelin and BDNF may be a protective factor against deleterious consequences of chronic exposition to heat stress.
AtıfScopus12WoS9OpenAlex10İncele - MakaleYalnız künye2019Examination of the Effects of Age, Gender and Season on Serum Visfatin Levels in Trakya Horses
Bayraktar, Bülent; Tekce, Emre
The aim of this study was to determine the effect on levels of the hormone visfatin on the factors of season, gender and age in Trakya horses. The study material consisted of 20 horses of different genders and ages. It was determined that the mean levels of the hormone visfatin in mare and stallions in the 1-6 and 7-20-year age groups were respectively were 23.38, 21.40; 26.46, 23.96 ng / ml in the season of winter (February), in the season of the summer (August) these levels were 17.98, 18.68; 22.22, 21.32 ng / ml. In conclusion, it was determined that the parameters of season, age and gender have an effect on serum levels of the hormone visfatin, a statistically significant difference was found (p<0.05). In addition to the results obtained, the study has the merit of being the first on this topic.
- MakaleYalnız künye2019Sıcaklık Stresi ile İndüklenen Broilerde Farklı Oranlarda Uygulanan Bitkisel Eksraktların Bazı Kan Parametrelerine Etkisinin İncelenmesi
Bayraktar, Bülent; Tekce, Emre
Sıcaklık stresi, immunosupressif etkisi nedeniyle kanatlılarda büyüme ve gelişme geriliği, metabolik problemlerden ölüme kadar varabilen sağlık sorunlarına yol açan önemli bir stres etmenidir. Bu çalışma, sıcaklık stresine maruzkalan kanatlılarda bitkisel ekstrakt kullanımına bağlı olarak serumda P düzeylerinin karşılaştırılmasının yanı sıra eşzamanlı olacak şekilde içme sularına ilave edilen stresin etkisini azaltılmasında antioksidan özelliklere sahip Eucalyptusglabutus labii (ökaliptus),Tymus vulgaris (kekik),Cymbopogon nardus (sitronella) ve Syzgium aromaticum (karanfil)bitkilerinden oluşan uçucu yağ karışımının (EOM) bazı kan parametreleri (Fosfor (P), Lipaz, Sodyum (Na), Klor (Cl),Doymamış demir bağlama kapasitesi (UBİC), Total Demir Bağlama Kapasitesi (TIBC), Transferin Doygunluğu (%SAT) düzeyi üzerine olan etkisi araştırılmıştır. Araştırmada her birinde 50 adet hayvan olacak şekilde 8 gruba ayrılmıştır. Gruplar kendi içerisinde her bölmede 10 adet hayvan olacak şekilde 5 alt grubu içermektedir. UIBC ve TIBCdüzeyleri kontrol grubuna kıyasla 22°C gruplarda 500 ml/1000 l gruplarda en fazla artış gözlenirken, 36°C gruplarda ise500 ml/1000 l gruplarda en fazla azalma tespit edilmiştir (p<0,05).Deney sonucunda gruplara ait veriler incelendiğindesıcaklık stresine maruz kalan broylerin içme suyuna ilave edilen EOM’un serumda P, Lipaz, Na, % SAT düzeyleri üzerinde önemli bir etkisinin olmadığı tespit edilmiştir (p>0,05).
- MakaleAçık Erişim2018Investigation of the Effect of Some Herbal Extracts Used in Different Ratios on Serum Iron Level in Experimentally Heat Stress Created in Broiler
Bayraktar, Bülent; Tekce, Emre
Objective: Iron is found in the structure of hemoglobin, which carries oxygen to tissues with a critical prescription for life. Hemoglobin is a protein involved in iron binding and transport, which can lead to significant morbidity, leading to impaired suppression of the immune system and resistance to infections, as well as impaired brain and motor function. Material and Methods: Iron level in body; there were studies showing that consumption of iron-containing foods, use of certain hormones and medicines, and stress-related effects have been seen. On the other hand, in psychological and heat stress studies that experimentally applied in rats, it has been reported that levels the level was decreasing. In this study, it was aimed to determine the change in serum iron levels by adding essential oil mixture (EOM) with antioxidant effect to drinking water in 22°C and 36°C heat stress in chickens which are the most sensitive animals to stress. In this study, 400 pcs and 1 day old Ross-308 male broiler chicks were used. There are 8 different groups with 50 animals in each group, it will be divided into 10 pcs in each section and the study was carried out from the 15th day to the 42nd day. The study lasted for 42 days, for 22°C stress-free and 36°C stressed groups with 5 subgroups separated (Control, EOM (essential oil mixture)-250, EOM-500, EOM-750. Results: Serum iron levels in the experimental groups were 88.2, 82.2, 103.4, and 98.4 μg/dL at 22°C, respectively, and 88, 78.2, 84.8, and 85 g/L respectively at 36°C stressed broiler groups. Conclusion: It has been determined as a result of this study, serum ıron levels not affected by the EOM added to drinking water (p>0.05).
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