Browsing by Author "Ozturk, Yahya"

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Effect of Genotype and Non-Genetic Factors on Growth Traits and Survival Rates in Turkish Indigenous Hair Goats and Their First Cross With Boer Bucks
(Agricultural Research Communication Centre, 2017) Bolacali, Memis; Ozturk, Yahya; Yilmaz, Orhan; Kucuk, Mursel; Karsli, Mehmet Akif
The aim of this study was to determine the effects of genotype and non-genetic factors on the growth traits and survival rates of Turkish indigenous Hair goats (n=63) and their first crosses with Boer bucks (n=91), reared under a semi-intensive management system in the Van province of Turkey. The live weights of the kids at birth and on days 30, 60, 90, 120, 150, and 180 were determined to be 3.64, 8.89, 13.99, 18.97, 23.62, 27.22 and 30.44 kg, respectively. The average daily gains in the pre-weaning, post-weaning and overall periods were 171.09, 136.43 and 148.34 g, respectively. The multiple-birth kids had lower survival rates than the single-birth kids (P<0.01). As a result, it may be recommended to Hair goat breeders in the region to use Boer bucks in cross-breeding in order to ensure a better growth performance from the kids; to apply a sustainable selection program; and to improve management conditions. In addition, the data obtained from this study may be used as a model for designing policies on Hair goat breeding in this region.
Effects of Substituting Barley With Wet Sugar Beet Pulp Silage Prepared With Wheat Bran on Fattening Performance, Carcass Quality of Lambs and Cost
(Kafkas Univ, veteriner Fakultesi dergisi, 2011) Ozturk, Yahya; Karsli, Mehmet Akif; Aldemir, Resit; Bolat, Duran
The objectives of this study were to evaluate the effects of substituting barley with wet sugar beet pulp silage at differing levels on fattening performance, carcass quality and cost. To achieve this objective, a barley based diet (control diet) was prepared. Then, three diets were prepared by substituting 35% (35% WSBPS diet), 70 (70% WSBPS diet) and 100% of barley energy with wet pulp silage (100% WSBPS diet). A total of 48, 6-7 month old, male, Akkaraman lambs were utilized in the study. Lambs were randomly allotted into one of four groups based on initial body weights. Each group was also divided into 4 subgroups with 3 lambs within each subgroup and fed with one of four diets for a period of 75 days. Daily feed intake of each subgroup was determined weekly. All of the lambs were weighed bi-weekly to determine weight gains. Six lambs from each treatment group were slaughtered at the end of the experiment to determine carcass quality. Costs of each kg of diet DM and 1 kg of live weight gain for each diet were calculated. Initial live body weights of lambs fed different diets were similar, ranging from 23.48 to 25.03 kg (P>0.05). Overall daily weight gains of lambs fed different diet were also similar throughout the experiment and were 0.160, 0.182, 0.182, and 0.160 kg for control, 35%, 70% and 100% WPS diets, respectively (P>0.05). Hot and cold carcass weights, carcass tight, leg and loin weights were not statistically different among groups (P>0.05), but back weights were greater in sheep fed 75% WSP diet compared with control (P<0.05). Addition of WSBP silage into diets decreased both costs of diets and 1 kg live weight gain in a linear way. It can be concluded that energy provided by barley can be substituted with energy of WSP silage up to 70% without affecting fattening performance, carcass features and can greatly reduce production cost in lambs based on the results of the present study.
Fluvio-Karstic Development of the Masiro Canyon (Pervari) and Geomorphic Features of Its Surroundings
(Istanbul Univ, Fac Letters, dept Geography, 2021) Zorer, Halil; Ozturk, Yahya
Masiro Canyon is a fluvio-karstic valley located in the Bitlis-Zagros Suture Zone, which is the largest thrust structure in Anatolia, in the east of the Pervari District of Siirt Province. This canyon is located in the upper basin of the Dicle River in the subbasin of the Sinebel Creek and Botan River. The Sinebel Creek valley network built on Neogene deposits was exposed to anticlinal uplift between Korkandil Mountain and Gulle Hill. The stream responded to this rise by being buried in the topography and developed a narrow-deep canyon structure. Therefore, in addition to the antecedent character, epigenetic features are also observed in the canyon. The canyon has a polygenic character because karstification, fluvial processes, and tectonism have a common effect in the development of the canyon valley. In and around the canyon, which is an example of tectonically controlled karstification in the folded karst zone belt, in addition to the karst topography, fluvial shapes and mass movements are also encountered. The study area, which has a rich geomorphic landscape, has a rugged topographic structure. In this study, the morphogenetic evolution of the Masiro Canyon and geomorphic characteristics of its immediate surroundings are clarified. For this purpose, field studies were conducted, literature was reviewed, and maps and figures related to the area were produced in a geographical information system environment using a 12.5-m-resolution digital elevation model.
Lahar Formations and Gis-Based Analysis of Lahar Susceptibility in the Mountain Ararat Volcanic Massif
(Geomatik Journal, 2025) Kaya, Coskun; Ozturk, Yahya; Karatas, Atilla; Sayin, Hasan; Balcioglu, Yunus Emre
Lahars, which can create disaster-scale impacts in strato-volcanic areas, are a type of mass movement specific to volcanic topographies. Lahar flows, which can be hot and cold in character, have frequently occurred on Mount Ararat in the recent geological past. Especially the presence of abundant coarse detrital material and thick pyroclastic deposits in the mobilized mass are the main parameters responsible for the transformation of debris flows into lahars. High slope values, developed surface drainage network, seismic as well as volcanic activity and tectonic deformation are also important factors. Climatologically, the melting of the Greater Ararat glacier, overflow of supraglacial lakes and heavy rainfall, which has tended to increase in recent years, control the lahar flows. In this study, in addition to explaining the mechanisms controlling lahar development, a lahar susceptibility analysis of the volcanic massif was performed using the GIS-based frequency ratio method. The results show that the potential for lahar development is high in a large part of the mass. Considering the presence of many rural settlements on the slopes of Mount Ararat Volcanic Massif, it is recommended that the lahar hazard should be included in the national disaster inventory and the spatial organization should be shaped accordingly.
Neotectonic and Topographic Evolution of the Bitlis-Zagros Fold-Thrust Belt, Se Turkey Br
(Tubitak Scientific & Technological Research Council Turkey, 2023) Zorer, Halil; Ozturk, Yahya; Selcuk, Azad Saglam
The Bitlis-Zagros Fold-Thrust Belt is one of the world's largest deformation zones, extending from the Eastern Mediterranean in southern Turkey to in the south of Iran. This deformation zone is partitioned between different structures; however, little is known about the relative activities of these different structures and their effects on topography. An area located in the northern part of Bitlis- Zagros Fold-Thrust Belt, Just south of the Eastern Anatolian Plateau was studied in detail to analyze the effect of active tectonism on topographic development. The effects of active deformation structures such as Hakkari and Sirvan Fault Segments on the topographic evolution of Kato Folds and Sinebel Valley were investigated to understand the fold and thrust fault activity. Geomorphic Indices were used, such as HC, HI, SR, Ksn together with rose analysis based on bedding measurements. Investigation of folding in the region Indi- cates the effective stress regime in the precolliston zone was in NW-SE compression direction. The deformation structures, effective in the postcollision zone developed due to N-S directional compression, and are shown here to have different effects on topography of the region. This study has shown the relative uplift rate is highest in the areas where Hakkart and Sirvan Segments are pure thrust faults (0.4 mm year'), and lower in the transfer zone (0.2 to 0.4 mm year (1)) between the segments. As a result of this study. It is concluded that the main deformation structures controlling the topography in the region are not only thrust faults, but also structures that develop in the area of transfer zone.
Remote Sensing Supported Analysis of the Effect of Wind Erosion on Local Air Pollution in Arid Regions: a Case Study From Iğdır Province in Eastern Türkiye
(Springer Heidelberg, 2023) Ozturk, Yahya; Yulu, Adem; Turgay, Orkun
PM pollution is one of the most important environmental problems worldwide. One of the sources of PM pollution, which has a negative impact on human health, is dust that enters the atmosphere, especially in arid regions. I & gbreve;d & imath;r Province, located in the east of Anatolia, has an arid climate character and was selected as the most polluted province in Europe in 2021 and 2022 (in terms of PM2.5 pollution). In this study, the effect of wind erosion-induced dust on air pollution in I & gbreve;d & imath;r province was investigated. We think that local wind erosion during the summer season (May-September) in the province is effective on PM pollution. Because there are no industrial activities, vehicular traffic, fuel consumption and volcanic activities that cause PM pollution in the summer season around I & gbreve;d & imath;r. On the other hand, T & uuml;rkiye's second largest wind erosion area and the other two wind erosion areas are located here, and dust storms are quite frequent. The causes of local wind erosion, which is one of the main factors in air pollution in the summer period, were investigated from a geographical perspective and various data sets were utilized. Then, wind erosion sites were examined and their regional distributions were indicated. Research findings on wind erosion sites were supported by remote sensing techniques (quartz index, aerosol density, etc.). All the data obtained support the idea that wind erosion is a dominant factor in the high level of PM pollution during the summer season in this area. Because the number of days with strong winds during this period is quite high and EU, WHO and national PM limit values are exceeded almost every day.
A Study on Growth, Slaughter and Carcass Traits of Morkaraman and Kivircik X Morkaraman (F1) Lambs in Semi-Intensive Condition
(Kafkas Univ, veteriner Fakultesi dergisi, 2012) Ozturk, Yahya; Kucuk, Mursel; Karsli, M. Akif
This study was carried out to compare the growth, slaughter and carcass characteristics of Morkaraman (Pure) and Kivircik X Pure (F-1) (Cross-bred) lambs in semi-intensive condition. At this study 20 Pure and 22 Cross-breed lambs were used for growth traits; 6 male lambs from each group were slaughtered for slaughter and carcass traits. Growth was investigated from the birth to 150th day. The lambs were fed with alfalfa and lamb fattening feeds (days 45). The least squares mean of birth weight and 30, 60, 90, 120 and 150th day weight were 4.06 +/- 0.10 and 4.25 +/- 0.11, 9.93 +/- 0.26 and 8.76 +/- 0.26 (P < 0.01), 16.87 +/- 0.45 and 14.40 +/- 0.45 (P < 0.001), 23.21 +/- 53 and 21.72 +/- 0.52 (P < 0.05), 29.62 +/- 0.64 and 26.69 +/- 0.63, 34.93 +/- 0.80 and 35.85 +/- 0.79 kg. Dressing percentages were 48.49 and 45.03% (P < 0.01); the percentages of leg were 28.36 and 32.23% (P < 0.001); shoulder were 17.04 and 17.51%; back were 5.67 and 7.38% (P < 0.001); loin were 6.14 and 6.26%; others were 24.31 and 28.62% (P < 0.001); kidney were 0.63 and 0.72% (P < 0.001); kidney-pelvic channel fat were 0.64 and 0.95 (P < 0.01); internal fat were 1.21 and 1.73%; fat tail were 15.72 and 4.64% (P < 0.001). The percentages of lean meat in the leg were 64.20 and 65.57%; fat were 15.55 and 13.42%; bone were 20.25 and 21.02%. The percentages of lean meat in the shoulder were 65.64 and 63.00%; fat were 13.55 and 13.90%; bone were 20.82 and 23.11%. The percentages of total meat in the carcass were 48.01 and 55.09% (P < 0.05); fat were 16.21 and 16.96%; bone were 19.55 and 21.44%; and fat percentages in the tailed carcass were 31.93 and 21.55% for pure and Cross-breed lambs respectively. In conclusion; it has been though that Kivircik rams can be utilized for breeding with Pure Morkaraman ewes, commonly found in the region, to obtain lambs with high quality meat at slaughtering age without adaptation problem; and desired lean meat can be obtained via grazing in addition to cross breeding.