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Articles by Suleyman Cilek
Total Records ( 7 ) for Suleyman Cilek
  Suleyman Cilek
  The present research, was carried out to determine reproductive traits and effects of environmental factors on these traits in Holstein cows raised at polatli state farm located in Ankara province. A total of 2177 reproduction records between 1997 and 2006 were constituted the research material. Environmental factors were analyzed by least squares method. The least square means of gestation duration, first servicing period service period, NIPC and calving were 274.971±0.524, 111.55±3.73, 149.60±4.36, 1.72±0.05 and 427.88±4.36 days, respectively. On gestation duration, effects of breeding year, breeding age, birth type and sex of calf were significant (p<0.001). However, effect of breeding season on gestation duration was non-significant (p>0.05). Effects of breeding age on all reproductive traits (service period, first servicing period, Number of Insemination for Per Conception (NIPC) and calving interval) were significant (p<0.001). Effect of breeding season on service period and on calving interval was significant (p<0.05). However, effect of breeding season on first servicing period and on NIPC was non-significant (p>0.05). As effect of breeding year on all reproductive traits was significant first servicing period, management was the most important factor in this study.
  Suleyman Cilek
  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 Method. Effects of parity (lactation number) on 305 days milk yield, lactation duration and dry period were significant (p<0.001-p<0.05). Effect of calving year on 305 days milk yield was significant at the p<0.001 level, nevertheless, not significant on both lactation length and dry period. Effect of calving year was significant statisticaly for all milk yield traits (p<0.001). Effect of calving age on 305 days milk yield and dry period were significant (p<0.001), nevertheless, not significant for lactation length. The least square means of 305 dayss milk yield, lactation duration and dry period were 5606.92±75.49 kg, 303.40±3.04 days and 98.15±2.25 days, respectively. Under Turkish conditions and steppe climate of middle Anatolia, it can be concluded that Holstein cattle are raised successfully for milk yield on Polatli state farm.
  Suleyman Cilek
  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. The study was carried out on the date obtained from 1681 foals at birth, 268 foals at 6 month, 422 foals at one years of age, 160 foals at 2 years of age and 37 foals at 3 years of age between the years 1987 and 2007. Although, the effect of foaling month was insignificant (p>0.05), the effects of foaling age, foaling year and sex of foals on birth weight were significant (p<0.001-p<0.05). Colts weighed 46.27±0.40 kg at birth, while fillies weighted 45.22±0.40 kg at birth. Means of body weights at birth was 45.74±0.31 kg. The average values for withers height of colts and fillies at birth, 6 month, 1, 2 and 3 years of age were 96.66±0.08, 136.29±0.34, 142.18±0.42, 149.80±0.37 and 151.79±0.78 cm, respectively. Average values heart girth were 80.06±0.08, 148.16±0.48, 156.70±0.36, 170.96±0.54 and 175.33±0.99 cm, respectively. The average values for body length foals at birth, 6th month, 1, 2 and 3 years of age were, respectively 69.03±0.23, 122.01±0.39, 132.08±0.86, 142.04±0.46, 145.08±1.00. Averages values for cannon bone circumference were10.63±0.10, 16.64±0.07, 17.73±0.04, 18.82±0.08, 19.32±0.11, respectively. At the end this study, it was concluded that growth performance of purebred Arabian horses reared at Anadolu state farm were good. Mean values of body measurement at some periods (birth, 6 month, 1, 2 and 3 year) can be used to control growth of foals in this farm and growth performance of foals was evaluated according to these values.
  Suleyman Cilek
  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 1976 and 2006. The least square means of gestation length, first servicing period, service period, foaling interval, oestrus cycle per pregnancy and NIPC was 334.3±0.22, 24.91±0.93, 45.12±1.09 and 371.79±1.57 days, 1.53±0.03, 5.68±0.10, respectively. Heritability of gestation duration was estimated 0.22±0.06 by paternal half sib method from 2093 gestation duration of purebred Arabian mares sired by 49 stallion, which had at least 5 daughters. It can said that effect of environmental factors on gestation duration is higher than genetic factors. The average gestation length was estimated as 334.3±0.22 days for Arabian mares. Effects of foal sex, breeding age, breeding month and breeding year were significant (p<0.001-0.05). Colt foal pregnancies were longer than fillies. Gestation duration increased with age up to maturity and decreased thereafter. Shortest gestation duration was found in mares bred in June. Although, the effect of breeding month on first servicing period was insignificant (p>0.05), effect of breeding month on service period, on foaling interval, on oestrus cycle per pregnancy and on Number of Insemination for Per Conception (NIPC) was significant (p<0.001). Although, effect of breeding year on oestrus cycle per pregnancy was insignificant (p>0.05), effect of foaling year on first servicing period, on service period, on foaling interval and on NIPC was significant (p<0.001-0.05). On the basis of mares at mating oestrus, from fertility records of 3223 mares, ratios of oestrus, sub-oestrus, pregnancy, sterility, parturition and abortion were 98.70, 1.30, 74.00, 26.00, 69.07 and 4.93% for Arabian mares, respectively. As ratio of parturition was >80% after 2000 year, it can be concluded that reproductive performance of Arabian horses are higher after 2000 year. The factors have the greatest influence over the fertility traits were the breeding month of mares and breeding year. Better performance levels can be obtained by culling old, emphysema pulmonum and infertile mares and better feeding and attention. Oestrus detection and artificial insemination should be performed at the right time and in an appropriate way. An appropriate teasing technique should practice in deciding whether mares are properly in heat. Controls of ovulation and gestation examination by using ultrasonography should be done.
  Seher Dirican , Haldun Musul and Suleyman Cilek
  This study was carried out to determine some physico-chemical characteristics and rotifers of Camligoze Dam Lake located at northeastern part of Turkey. For this aim, water and rotifer samples were taken from 2 station between May 16 and November 16, 2007 in Camligoze Dam Lake. A total of 11 rotifer species; Brachionus plicatilis, Kellicottia longispina, Notholca acuminata, Notholca squamula, Colurella uncinata, Lecane luna, Lecane lunaris, Cephalodella gibba, Synchaeta oblonga, Synchaeta pectinata and Polyarthra dolichoptera were determined in the Camligoze Dam Lake. In the water samples, totally 5 physico-chemical parameters; water temperature, electrical conductivity, pH, secchi disc depth and dissolved oxygen were analyzed. As a result of this study, Camligoze Dam Lake was found there are no serious a water pollution problem.
  Suleyman cilek and Ali Kaygisiz
  In this study, it was aimed to calculate genetic parameters of 305 day milk yield and breeding value estimation of Brown Swiss Cattle reared on Ula State Farm. Later, analysis results were compared. In this study, 830 first lactation records of daughter sired by 58 bulls that had at least 5 daughters were used. Additive genetic variance, error variance, permanent variance, environment variance, heritability, repeatability and breeding value were estimated using REML animal model. Heritability of test day milk yields (0, 10) was higher than the heritability of 305 day milk yield (0, 02) Correlation between breeding values estimated using test day milk yields and breeding value of 305 day milk yield was found statistically significant (p<0.01) and high level (0.862). In estimation of breeding value for test day milk yields and 305 day milk yield, Spearman and Kendall correlations between rankings of bulls were found 0.853 and 0.662 and statistically significant (p<0.01). According to results of this study, in genetic evaluation of dairy cows, test day milk yields should be used instead of 305 day milk yield. Furthermore, in genetic evaluation of dairy cows, there are advantages for using test day milk yields. Test day milk yields ought to be taken into consideration in early culling and selection of cows for milk yield.
  Suleyman Cilek
  In this study, adjustment factors of lactation milk yield to mature age and 305 day of milk yield were estimated for Holstein cattle reared in Polatli State Farm. A total of 3184 lactation records of Holstein cattle reared in Polatli State Farm between 1993 and 2006 were used. The factors for standardizing incomplete lactations to 305 day were estimated by taking into consideration nine calving age groups (2, 3, 4, 5, 6, 7, 8, 9, 10 and older years of age). The factors for standardizing to mature equivalent estimated by polynomial regression method are between the 20th month and 145th and older. For lactations less than 305 days, average of adjustment factors for 30, 60, 90, 120, 150, 180, 210, 240, 270, 300 and 305th days, were 8.70, 4.32, 2.82, 2.14, 1.69, 1.48, 1.31, 1.18, 1.09, 1.01 and 1.00, respectively. For lactations more than 305 days, the average of adjustment factors for 310, 340, 370, 400, 430, 460, 490, 520, 550, 580 and 600th days were 0.99, 0.93, 0.88, 0.84, 0.80, 0.77, 0.74, 0.72, 0.69, 0.67 and 0.65, respectively. Adjustment factors were estimated as 1.14 and 1.51 for the youngest cows (calving in 24th month) and for oldest cows (calving in 145th month), respectively.
 
 
 
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