Suleyman Cilek's research while affiliated with Kirikkale University and other places

Publications (24)

Article
Full-text available
This experimental research was carried out with Malya sheep to determinate the effects of age and gender on head measurements. Head measurements were taken from 55 male and 261 female sheep from 1 year-old to 5 or more years-old. Head length, head circumference, head width, distance between ears, ear length and ear width were estimated as head meas...
Article
Full-text available
This experimental research was carried out to determinate phenotypic correlations among some body measurements of Malya sheep and prediction of body weight from these measurements. By using body measurements of total 316 heads that included male, female, adult and yearlings, phenotypic correlations among some body measurements (wither height, rump...
Article
This study was conducted to investigate effect of some factors on survival rate of Malya lambs. The survival rate of 302 lambs at different sex, birth weight, maternal age and birth type was determined. The effects of twins, maternal age, birth weight and sex on lamb survival rate until 180 d of age were investigated using the Chi-square test. The...
Article
This experimental research was carried out to determinate effects of age and sex on body weight and some body measurements of Malya sheep (11/16 Akkaraman × 5/16 Deutsches Merinofleischschaf). Body measurements, wither height, rump height, back height, rump length, rump width, front cannon bone circumference, body length, chest circumference, chest...
Article
The effects of dam age, lamb gender, and singleton or twin status on lamb body size and growth were investigated in Malya lambs in Middle Anatolia, Turkey. Data were obtained from 302 lambs from an elite Malya sheep flock. Wither height, body length, rump height, rump length, back height, rump width, and front cannon bone circumference were recorde...
Article
This study was conducted to investigate the environmental factors affecting milk yield traits of Turkish Brown cows raised at the Ulaş state farm under a sub-tropical climate. First the effect of calving years on actual milk yield, daily milk yield, 305-day milk yield, 305-day mature age milk yield, lactation duration and dry period days were inves...
Article
The aim of the present study was to estimate genetic parameters of body measurements in Turkish Arabian foals. Records of wither height, front cannon circumference, heart girth, and body length were used for body measurements at birth, 6 months of age, 1-year-old and 2-year-old. Heritability of body measurements of Turkish Arabian foals was estimat...
Article
Full-text available
The objective of the present investigation was to study single nukleotid changes genetic in leptin gene in indigenous (East Anatolian red Cattle and Anatolian Black) cattle breeds. The T and C allele frequencies were 0.54 +/- 0.06 and 0.46 +/- 0.06 for East Anatolian Red cattle, 0.48 +/- 0.05 and 0.52 +/- 0.05 for Anatolian Black respectively. All...
Article
Full-text available
Abstract: The purpose of this study was to estimate the trends components of 305-days milk yield in Holstein Friesian Cattle Holstein cows raised at the Ceylanpinar state farm in Turkey between 1986 and 2007 years. The phenotypic, genetic and environmental trends for 305-days milk yield were found to be 106.91, 13.42 and 93.49 kg year(-1), respecti...
Article
The aim of this study was to investigate environmental factors affecting reproductive traits of Holstein cows and heifers raised at the Tahirova state farm in province Balikesir in Turkey. Reproductive traits were investigated by using 1074 records between 2000 and 2008. The least square means of age of first breeding, age of first calving, service...
Article
The present research was carried out to determine milk yield traits and effects of environmental factors on these traits in Holstein cows raised at Polatli State Farm located in Ankara province. A total of 3011 production records between 1993 and 2006 were constituted the research material. Environmental factors were analyzed by Least Squares Metho...
Article
The aim of this study, was to determine the level of some important production characteristics and to investigate some environmental factors affecting fertility traits of purebred Arabian mares raised at Anadolu state farm in Eskisehir for last 30 years. This study was carried out on the data obtained from 2189 mares for fertility traits between 19...
Article
The purpose of this study was to determine the level of growth characteristics and to investigate the effects of environmental factors on these characteristics in purebred Arabian foals reared at Anadolu state farm at Eskisehir province in Turkey. The study was carried out on the date obtained from 1681 foals at birth, 268 foals at 6 month, 422 foa...
Article
Full-text available
This study was done to determine lactation curves traits of Brown Swiss to the Ministry of Agriculture. Gamma curve parameters (ct b t e At Y − =) of Wood (1967) in determination the shape and type of lactation curve were used. In lactation curves investigated in this study, percent of atypical lactations was found as 15.2 %, 15.5 %, 23.6 %, and 21...
Article
In this study, between 1993 and 2006, lactation records were obtained from Lactation milk yield was calculated by taking results of monthly test day milk yield tests in the farm by using Holland method. Lactations with less than 7 tests were not used in calculation. Milk yields were standardized to mature age and 305 days by using adjustment factor...
Article
The present study was conducted to investigate the environmental factors affecting fertility traits of Haflinger mares raised at a stud farm. Gestation length was the lowest in mares bred in July. The effect of foaling month on servicing period, service period and foaling period was significant. The longest service period and foaling intervals were...
Article
The aim of this study was to investigate environmental factors affecting fertility traits of Thoroughbred and Halfbred mares raised at a stud farm in Bursa between 1985 and 2000. The factor that showed the greatest influence over the fertility traits was the breeding month of mares. The effect of breeding month on first servicing period, service pe...
Article
Full-text available
The aim of this study was to investigate the fitness of Incomplete Gamma (WD), Quadratic (Q), Cubic (C), Exponential (WIL), Mixed Log (ML) and Polynomial Regression (AS) models to the lactation curve of Simmental Cows. Data were collected from 752 Simmental cows raised on the Kazova state farm in Turkey. Milk yield was recorded monthly. Total milk...
Article
Full-text available
In this study, between 1993 and 2002, lactation records were obtained from Kazova State Farm, Tokat in Turkey (middle Anatolia), belonging to the Ministry of Agriculture. The aim was to calculate genetic parameters of 305 day milk yield and breeding value estimation of Simmental Cattle reared on Kazova State Farm. Later, analysis results were compa...
Article
This study was done to investigate environmental factors affecting fertility traits of Brown Swiss raised at the Ulas State Farm and phenotypic correlations between fertility traits. The least-square means of service period, calving interval, gestation length and number of insemination or per conception (NIPC) were found as 111 days, 396.7 days, 28...
Article
In this study, adjustment factors of lactation milk yield to mature age and 305 days were estimated for Brown Swiss cattle from 3 013 lactation records. Factors for adjusting the incomplete lactation to 305 days were calculated separately for 7 calving age groups, and the average of adjustment factors were also estimated for all the ages. For lacta...
Article
In this study, heritability and repeatability of milk yield were estimated for Brown Swiss cattle. From 2 652 lactations, repeatability of milk yield was estimated as 0.52±0.02. Heritability of milk yield for all lactations was estimated as 0.24±0.05 from 2 820 lactation records. It was concluded that both the repeatability and the heritability wer...
Article
Adjustment factors of lactation milk yield to mature age and 305-day were calculated and heritability and repeatability of milk yield were estimated for Simmental cows reared on Kazova State Farm. A total of 1549 lactation records of Simmental cows reared on Kazova State Farm between 1992 and 2002 were used. The factors for standardizing incomplete...
Article
The aim of this study was to investigate environmental factors affecting milk yield and fertility traits of Simmental cows raised at the Kazova state farm and the phenotypic correlation between these traits from 1473 records between 1992 and 2001. The least square means of 305-days milk yield, lactation duration, dry period, service period, calving...

Citations

... In many scientific studies, a high correlation has been reported between several morphological traits -including the chest circumference, body length and height at withers -and body weight (Oke and Ogbonnaya, 2011;Okpeku et al., 2013;Cilek and Petkova, 2016;Kumar et al., 2018). Unlike these studies, the quantitative traits investigated in the present study are limited to WH and LBW. ...
... In the aforementioned study, the length of gestations were 279.1 ± 4.65; 279.3 ± 4.84 and 278.5 ± 4.88 in winter; spring and summer respectively. On the other hand, these results were diverged, compared to the results investigated byBakir andCilek, 2009 and Melaku., et al. 2011 [22,23]. They recorded that season of birth had a significant influence on gestation length and that cows calved in the wet season (282.19 ± 0.38) had longer gestation length than those calved in the dry season (281.48 ± 0.37). ...
... The amount of milk production per day is increase in winter (27.18 ± 3.97) in compared to summer (25.54 ± 4.23); spring (25.35 ± 5.74) and autumn (25.14 ± 3.92). The findings of present study were similar to previous studies (28,29,30) which reported a significant increase of milk yield in cows calving in winter. As well, Similar finding have been reported by Javed et al., 2004 andTekerli et al., 2000 (31, 32) in Holstein Friesian cows. ...
... Environmental factors can be classified as factors with measurable effects (age, year, season, milking frequency, etc.) and factors with immeasurable effects (infectious diseases, parasitic infestations, etc.). The measurable effects can be determined and used in the management of the farm [8]. Environmental factors affecting variability in daily milk yield are widely documented in dairy cattle [9- 11]. ...
... Fertility traits were reported in various studies for SIM breed (Akbulut, 1998;Şekerden et al., 1999;Çilek and Tekin, 2005;Özkan and Güneş, 2011a;Erdem et al., 2015;Koç, 2016b) and for RH Koç, 2012;2017a). For milk yield characteristics, some results were reported for SIM breed by Akbulut (1998), Şekerden et al. (1999), Çilek and Tekin (2006), Özkan and Güneş (2011b), Erdem et al. (2015), Koç (2016b), and for RH breed Yılmaz (2010), Koç (2015) and Koç (2017b) who reported some results for the milk yield characteristics. ...
... Horses are seasonally polyestrous, and the fertility traits of mares are affected by environmental factors [1]. The estrous cycle of mares differs between 18 and 22 days, with an average of 21 days [2]. ...
... A mean GL for Thoroughbreds in 1999 was reported to be 10 days longer than that for 1998 and 2000, with the value for Halfbreds also longest in 1999; this was attributed to unusually cold temperatures. 31,46 Others reported that at the end of a 5-year drought in Spain, from 1994 to 1995, GLs were significantly shortened; 13 others agree, but attribute the longer GLs of 1980-1988 to the drier conditions and higher temperatures of that earlier period. 19 Year has also been shown to be a significant contributor to variation in GL, with 1 year in 14 having significantly longer GLs (1 day) and another year in the same time period having significantly shorter GLs. 15 These changes to the mean GL suggest an adaptive mechanism to extended periods of unusually high or low temperature, rather than a short-term, annual adjustment. ...
... These high correlations among the speed different body measurements may be due to the same genes affect these measurements so the improvement of one character will cause simultaneous changes in other characters. [24] has found in Turkish Arabian foals the phenotypic correlation between measurements at different ages are all positive, ranging from 0.22 to 0.63. [4] shows in Arabian horses that genetic and phenotypic coefficient between BL and WH , BL and CH and WH and CH are positive (0.20,0.29) , (0.50,0.25) and (0.51,0.51) respectively. ...
... The most rapid growth occurs in the first 6 months of age678, but changes during ontogeny occur not only in size, but also in form. At birth, foals possess approximately 64% of their adult wither height, but only 48% of their mature body length [9]. Changes in joint angles, distal limb tendon rigidity, and variability in relative heights at the withers and hips have also been reported during this growth period [10,11]. ...
... Les analyses statistiques finales ont été effectuées en utilisant le programme MTDFREML (Multi-Trait Derivative Free Restricted Maximum Likelihood) (Boldman et al., 1993Shiferaw et al., 2003Kanuya et al., 2000(Ogan, 2000) ou augmente (Cilek et Tekin, 2007) avec le numéro de lactation. ...