Person: ŞENGÜL, ÖMER
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ŞENGÜL
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ÖMER
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Publication Determination of the effects of silage type, silage consumption, birth type and birth weight on fattening final live weight in kivircik lambs with MARS and bagging MARS algorithms(Kafkas Üniversitesi, 2022-05-12) Şengül, Ömer; Çelik, Şenol; İbrahim, A. K.; ŞENGÜL, ÖMER; İbrahim, A. K.; Ziraat Fakültesi; Zootekni Bölümü; AAH-2915-2021; FXX-7276-2022This study was carried out to determine the effect of silage type, silage consumption, birth type (single or twin) and birth weight on live weight at the end of fattening in Kivircik lambs. In the experiment, 40 male Kivircik lambs aged 2.5-3 months were used and the animals were fattened for 56 days. During the fattening period, the lambs fed with 5 different types of silage (100% sunflower silage, 75% sunflower + 25% corn silage, 50% sunflower + 50% corn silage, 25% sunflower + 75% corn silage, 100% corn silage) pure and mixed in different proportions and concentrate feed. Data on fattening results were analyzed with MARS and Bagging MARS algorithms. The main objective of this research is to predict fattening final live weight (FFLW) of lambs using Multivariate Adaptive Regression Splines (MARS) and Bagging MARS algorithms as a nonparametric regression technique. Live weight value was modeled based on factors such as birth type, birth weight, silage type and silage consumption. Correlation coefficient (r), determination coefficient (R2), Adjust R2, Root-meansquare error (RMSE), standard deviation ratio (SD ratio), mean absolute percentage error (MAPE), mean absolute deviation (MAD), and Akaike Information Criteria (AIC) values of MARS algorithm predicting live weight were as follows: 0.9986, 0.997, 0.977, 0.142, 0.052, 0.2389, 0.086 and -88 respectively. Like statistics for Bagging MARS algorithm were 0.754, 0.556, 0.453, 1.8, 0.666, 3.96, 1.47 and 115 respectively. It was observed that MARS and Bagging MARS algorithms have revealed correct results according to goodness of fit statistics. In this study it has been determined that the MARS algorithm gives better results in live weight modeling.Publication Possibilities of using dried mulberry pulp as an additive in alfalfa silage(Polish Soc Veterinary Sciences Editorial Office, 2022-07-01) Şengül, Ömer; Şengül, Ahmet Yusuf; Kökten, Kagan; Cacan, Erdal; Beyzi, Selma Büyükkılıç; ŞENGÜL, ÖMER; Ziraat Fakültesi; Zootekni Bölümü; AAH-2915-2021This study was conducted to determine the effects of dried mulberry (Morus alba) pulp with high water-soluble carbohydrate (WSC) content on the nutrient substance composition, pH and silage acids of alfalfa silage. The alfalfa used in the study was harvested in the 10% flowering period and ensiled by mixing with dried mulberry pulp at different ratios (0%, 2.5%, 5%, 7.5%, 10%, 12.5% and 15%). The alfalfa that was ensiled for three months was analyzed at the end of this period, and the values measured for the control and treatment groups were compared. As a result, it was determined that the addition of dried mulberry pulp at different ratios into alfalfa silage was effective on some properties of the silage. In the case of adding mulberry pulp at 5-7.5% into the silage, it was observed that the silage pH decreased, and the lactic acid ratio increased. This positive result shows that in alfalfa silage mulberry pulp may be used as an additive. Hence, it may be stated that it would be suitable to add 5-7.5% mulberry pulp to increase the quality in alfalfa silage.Publication The effect on carcass characteristics of different silage types used in the rations of fattening lambs(Hellenic Veterinary Medical Soc, 2023-10-01) Şengül, Ömer; Ak, İbrahim; ŞENGÜL, ÖMER; AK, İBRAHİM; Ziraat Fakültesi; Zootekni Bölümü; KEJ-7788-2024This study was carried out to investigate the effects on carcass characteristics of lambs fed with dif-ferent silage types(corn silage, sunflower silage and their mixtures) and their mixtures at different levels. In the study, rumen volatile fatty acids levels and rumen pH of the lambs used in the experiment were determined at the beginning and end of fattening. For corn silage and sunflower silages, aerobic stability and lactic acid bacteria and yeast-mold counts were determined. In the treatment, 40 Kivircik male lambs aged 2.5-3 months were used as animal material. Lambs were divided into 5 different silage groups (100% corn silage, 75% corn+25% sunflower silage, 50% corn si-lage+50% sunflower silage, 25% corn silage+75% sunflower silage, 100% sunflower silage) and it was planned to have 8 lambs in each group. The lambs were housed in individual compartments during the experiment and the animals were individually fed. Silages were given to the lambs ad libitum and in addition to silage 700, 900 and 1400 g concentrated feed were given daily between 0-21, 21-42 and 42-56 days, respectively. As a result, it can be said that feeding with different silage types does not have a significant effect on carcass characteristics of lambs, and silages prepared with corn silage, sunflower silage and their mixtures can be used successfully in lamb fattening.Publication Effect of royal jelly on puberty of ewe lambs(Polish Soc Veterinary Sciences Editorial Office, 2021-09-01) Sengül, Ömer; İbrahim, A.k; Emsen, Berna; ŞENGÜL, ÖMER; AK, İBRAHİM; Ziraat Fakültesi; Zootekni Bölümü; 0000-0001-5078-2002; AAH-2915-2021; EZK-6483-2022In this study, we investigated the effect of royal jelly on the puberty of female 1/4 Romanov x 3/4 Morkaraman crossbred lambs. Royal jelly was applied in two ways: orally and intravaginally. The rate of estrus as well as the day and time (in hours) of estrus were observed and determined by real-time ultrasonography (for pregnancy) and laparoscopic surgery (ovary examination). Three groups of lambs were observed. The first group, consisting of 15 female lambs, was treated intravaginally; in the second group, 15 female lambs were treated orally; and the third group, which served as control, consisted of 10 ewe lambs that were not treated with royal jelly. Estrus rates in the intravaginally and orally treated groups were 13% and 20%, respectively, whereas the control group showed no estrus activity. However, estrus interval in both groups was observed 3-5 days after the withdrawal of the treatment. All the animals had an active ovary when observed during estrus activity by ovary examination. Yearling 1/4 Romanov-bred ewes respond positively to royal jelly application. Increasing the doses and extending the duration of royal jelly application might yield better results.Publication Use of multivariate adaptive regression splines (MARS) for predicting parameters of breast meat in quails(Pakistan Agricultural Scientists Forum, 2020-08-01) Şengül, Turgay; Çelik, Şenol; Şengül, Ömer; ŞENGÜL, ÖMER; Ziraat Fakültesi; Hayvancılık Bölümü. Bilim; 0000-0001-5078-2002; AAH-2915-2021The aim of this study was to determine the effects of variety and sex on the color of the breast meat (brightness: L*, red color: a*, yellow color: b*) in quails. In this study, a total of 144 quails from three different varieties (Wild-type, Dark Brown and Golden) were employed. The color and pH parameters of the breast meat were measured in quails slaughtered in week 10. In order to predict the brightness (L*), red color (a*), and yellow color (b*) values of the breast meat, Multivariate Adaptive Regression Splines (MARS) models were implemented. When determining the best model, attention was paid to minimize the Generalized Cross Validation (GCV), Root Mean Square Error (RMSE), and Mean Absolute Deviation (MAD) statistics and to maximize coefficient of determination (R-2) and adjusted R-2 values. In the MARS models constructed to predict L*, a* and b*, it was found that R-2 values were 0.999, 0.999, and 0.999; adjusted R-2 values were 0.997, 0.992, and 0.996; and RMSE values were 0.068, 0.082, and 0.038, respectively. As a result, it could be suggested that MARS modeling may be a useful tool for the prediction of the color parameters of the breast meat.