Aytekin Günlü

Prof. Dr. Aytekin Günlü

orcid

Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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7 July 2022 in Asian Journal of Agriculture
Verified
Journal Article
Closed access
PDF file
DWDenis Waiswa
Denis Waiswa
AGAytekin Günlü
Aytekin Günlü
Waiswa D, Günlü A. 2022. Economic analysis of dairy production in Uganda, a case study on the performance of dairy cattle enterprises in Southwestern Uganda. Asian J Agric 6: 61-67. The economic performance of dairy cattle enterprises in Southwestern Uganda was analyzed in this study. A survey was conducted on 100 dairy cattle enterprises in Mbarara, Kiruhura, Lyantonde, Ibanda, and Isingiro Districts using data compilation forms covering the 2019/20 production year. The unit production cost of milk was determined as US$0.19L-1. Veterinary expenses had the largest share of the production costs at 24.94%, followed by labor costs, depreciation of the inventory value, other expenses, and feed costs, which contributed 14.11%, 12.46%, 11.96%, and 11.41%, respectively. Additional costs included the depreciation of animals, electricity and water, buildings, equipment and machinery, maintenance-repair, and general administrative expenses, which contributed 9.95%, 7.86%, 2.54%, 2.29%, and 2.48% to the total production costs, respectively. As a result, while the net profit of the enterprises was determined as US$1435.29, their financial profitability was 0.59, the profitability factor was 12.20, and the output-input ratio was 1.06. The overall profitability of the enterprises was affected mainly by the high veterinary expenses due to the high prevalence rates of tick-borne infections and the irrational distribution of capital elements. Therefore, measures to reduce the occurrence of tick-borne diseases are considered vital in lowering milk production costs, thereby increasing the profitability of enterprises.

1 January 2004 in Asian-Australasian Journal of Animal Sciences
Verified
Journal Article
Open access
PDF file
KKKEMAL KIRIKÇI
KEMAL KIRIKÇI
OÇOrhan Çetin
Orhan Çetin
AGAytekin Günlü
Aytekin Günlü
MGMustafa Garip
Mustafa Garip
A study was conducted to determine the effect of live weight of pheasants on egg production and egg quality characteristics. A total of 48 ring-necked pheasants were divided into control, heavy, middle and light BW groups. Live weights of the control were 1,187 g, 1,352.92 g for heavy group, 1,247.92 g for middle group and 1,003.33 g for light group. Egg production of groups were found as 47.32, 42.82, 45.79 and 46.51% respectively, in 10 weeks of period. There were no statistical differences on egg production among the groups. The effect of live weight on egg weight, shape index, specific gravity, shell weight, shell thickness, Haugh Unit, yolk weight and albumen weight were found statistically significant (p0.05). On the other hand, other important factors to be effective on the egg quality of pheasants should be investigated. As a result of this study, live weight of pheasant hens is not an important factor to obtain high egg production in pheasants. But, body conformation of breeding materials should be in good conditions. (

16 August 2025 in Ruminants
Verified
Journal Article
Open access
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AVAlperen Varalan
Alperen Varalan
BBBurak Barıt
Burak Barıt
BMBurak MAT
Burak MAT
MÇMustafa Bahadır Çevrimli
Mustafa Bahadır Çevrimli
AGAytekin Günlü
Aytekin Günlü
This study aims to analyze the technical and economic infrastructure of sheep farming enterprises operating in Türkiye. It assesses the demographic characteristics of enterprise owners, enterprise scales, production objectives, marketing strategies, and economic performance. Primary data were collected through face-to-face surveys conducted with 201 sheep farming enterprises during the 2023 production period. The sample was selected based on information provided by the Provincial Directorates of Agriculture and Forestry and the Breeding Sheep and Goat Breeders’ Associations. Data analysis was performed using SPSS 27. Categorical data related to enterprise characteristics and the demographic profiles of enterprise owners were examined. The findings indicate that the majority of enterprise owners are middle-aged or older individuals, have a low level of education, and operate predominantly within an extensive production system. The producers’ marketing methods rely mainly on direct sales. In conclusion, ensuring the sustainability of the sheep farming sector requires encouraging young producers to enter the industry, expanding educational programs, and adopting modern production techniques.

1 August 2007 in Poultry Science
Verified
Journal Article
Open access
AGAytekin Günlü
Aytekin Günlü
KKK. Kırıkçı
K. Kırıkçı
OÇO. Çetin
O. Çetin
MGM. Garip
M. Garip
In this study, stocking density and economic evaluation of partridge rearing was investigated. Experimental design was constructed as 576.9 cm(2)/chick (group I), 384.6 cm(2)/chick (group II), 288.5 cm(2)/chick (group III), and 230.8 cm(2)/chick (group IV). Live weights of the first, second, third, and fourth groups at 12 wk of age were determined as 376.46, 367.95, 371.07, and 358.80 g, respectively. Additive feed consumption and feed conversion ratio of the groups were determined as 1,781.74 g and 4.93, 1,805.13 g and 5.13, 1,830.51 g and 5.15, and 1,720.09 g and 5.02, respectively. Total mortality rates of the groups at the end of the feeding time were determined as 3.5, 3.75, 6.75, and 13.00%, respectively (P < 0.05). As a result, it was concluded that rearing in 288.5 cm(2)/chick was suitable according to live weights of partridges, feed conversion ratio, and mortality rates. Also, it was concluded that decreasing costs and increasing profitability in partridge rearing could be achieved.

1 February 2022 in Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Verified
Journal Article
Open access
MÇMustafa Bahadır Çevrimli
Mustafa Bahadır Çevrimli
BMBurak MAT
Burak MAT
MTMustafa Agah Tekindal
Mustafa Agah Tekindal
AGAytekin Günlü
Aytekin Günlü
The objective of this study was to determine the risk factors in the production processes of cattle and small ruminant breeding enterprises, along with developing a scale that could be used during the insured breeding process in different regions of Turkey. In this study, we obtained information from 252 enterprises from different provinces (Afyonkarahisar, Aksaray, Ankara, Burdur, Karaman, and Konya) of Turkey. Reliability and validity analyses were conducted using the “Risk Assessment Form in Cattle and Small Ruminant Animal Production”. The Cronbach alpha (α) coefficient was used to analyze reliability, while the exploratory factor analysis was applied to analyze the validity. About 68.7% (173) of the enterprises included cattle breeding, while the remaining 31.3% (79) involved small ruminant breeding. To determine the risk factors, twenty-four questions were directed toward the livestock enterprises, and the following six factors were determined: Economic-Political Risks, Yield/Product Losses, Enterprise Technical Risks, Credit/Financing, Workforce, Enterprise Follow-up, and Registration. In the politico-economic risk scoring, the score of enterprises already having Animal life insurance (ALI) was observed to be higher than those who did not have it, with the difference being statistically significant (p<0.05). We interpreted that producers with higher politico-economic risk factor scores preferred insurance. Although the producers could determine the risk factors well, not all producers were necessarily aware of risk measures. Thus, it was necessary to improve the farmers’ perception of risks and support their efforts to manage and reduce these risks. Also, the importance of insurance practices within and out of the farm is predicted to increase gradually to develop more conscious, sustainable, and profitable breeding in agriculture and animal product markets, which are becoming more liberalized day by day.

14 June 2019 in Ankara Üniversitesi Veteriner Fakültesi Dergisi
Verified
Journal Article
Closed access
PDF file
MÇMustafa Bahadır Çevrimli
Mustafa Bahadır Çevrimli
BMBurak MAT
Burak MAT
AGAytekin Günlü
Aytekin Günlü
MTMustafa Agah Tekindal
Mustafa Agah Tekindal
ZGZehra Günlü
Zehra Günlü
En tr Veterinary clinics and animal hospitals need to be able to meet patient expectations at the highest level and increase their level of satisfaction. It plays an important role in the profitability, productivity and sustainability of animal health service providers. In this context, the aim of the study is to develop a measurement tool about the satisfaction of patient owners and to carry out the validity and reliability study of this measurement tool. The construct validity of the Patient Ownership Satisfaction Criteria Scale (HSMK-Ö), Patient Ownership Satisfaction Rating Scale (HSMD-A) and Veterinary Clinical Satisfaction Scale (VKHM-Ö). The power analysis (80.121% strength) performed prior to starting the study was applied to 212 patients whose outcome was determined. To ensure structural validity; Cronbach alpha (α) coefficient was used in reliability analyzes. Factor analysis was applied for validity analysis. HSMK-Ö; HSMD-A; VKHM-Ö items were identified as a one-factor structure as a result of the Varimax rotation method. In the developed scales, the cronbach alpha (α) reliability coefficients calculated for 14 items in HSMK-E, 8 items in HSMDA and 18 items in VKHM-Ö were 0.759; 0.936; 0.778. When the total variance explained, there is only one factor in HSMK-Ö and VKHM-Ö in HSMD-A, and this measured value is 58.06% for each scale; 61.375%; 70.39% can be said to be measured. It can be said that HSMK-Ö, HSMD-A and VKHM-Ö measuring instruments are valid and reliable. Expanding the utilization of of satisfaction studies in patients with different sample groups is proposed to be held in Turkey. Veteriner klinikleri ve hayvan hastanelerinin hasta sahiplerine ait beklentileri en üst düzeyde karşılamaları ve memnuniyet düzeylerini artırmaları hayvan sağlığı hizmeti veren kurumların kârlılık, verimlilik ve sürdürülebilirliğinde önemli bir rol oynamaktadır. Bu kapsamda çalışmada amaç, hasta sahiplerinin memnuniyeti konusunda bir ölçme aracı geliştirmek ve bu ölçme aracının geçerlilik ve güvenirlik çalışmasının yapılmasıdır. Çalışmada Hasta Sahibi Memnuniyet Kriterleri Ölçeği (HSMK-Ö), Hasta Sahibi Memnuniyet Değerlendirme Ölçeği-Acil (HSMD-A), Veteriner Klinik Hizmet Memnuniyeti Ölçeği (VKHM-Ö) ölçme araçlarının yapı geçerliliği yapılmıştır. Çalışmaya başlamadan önce yapılan güç analizi (%80.121 güçle) sonucu belirlenen, 212 hasta sahibine uygulanmıştır. Yapı geçerliliği için; güvenirlik analizlerinde Cronbach Alfa ( ) katsayısı kullanılmıştır. Geçerlik analizi için faktör analizi uygulanmıştır. HSMK-Ö; HSMD-A; VKHM-Ö maddeleri Varimax döndürme yöntemi sonucunda tek faktörlü bir yapı olarak belirlenmiştir. Geliştirilen ölçeklerde HSMK-Ö’de 14 madde, HSMD-A’da 8 madde, VKHM-Ö’de 18 madde için hesaplanan Cronbach Alfa ( ) güvenilirliği katsayıları sırasıyla 0.759; 0.936; 0.778 çıkmıştır. Açıklanan toplam varyans incelendiğinde HSMK-Ö ve VKHM-Ö’de 4, HSMD-A’da tek faktörün bulunduğu ve bu ölçülen özelliğin her ölçek için sırasıyla %58.06; %61.375; %70.39’ unun ölçüldüğü söylenebilir. HSMK-Ö, HSMD-A ve VKHM-Ö ölçme araçlarının geçerli ve güvenilir olduğu söylenebilir. Türkiye’de yapılacak farklı örneklem gruplarındaki hasta sahibi memnuniyetine ait çalışmalarda kullanımının yaygınlaştırılması önerilmektedir.