Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis
Yıl: 2022 Cilt: 53 Sayı: 1 Sayfa Aralığı: 67 - 70 Metin Dili: İngilizce DOI: 10.17097/ataunizfd.1002002 İndeks Tarihi: 23-08-2022
Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis
Öz: This study used isotonic regression analysis to classify non-linear regression models that were used to describe the growth curve in relation to different quality fit criteria. The best model selec- tion was made by using the weight–age data obtained from Awassi sheep. Ten non-linear models measured by the fit quality determination coefficient, Akaike information criterion, Bayesian infor- mation criterion, mean quadratic estimation error, and estimated coefficient of determination were used. As a result of different non-linear models that were used to predict the growth curves of Awassi sheep and the isotonic regression analysis applied to these models, considering the Mean Square Error and R2 values, the Von Bertalanffy model turned out to be the most appropri- ate model. As a result, it was revealed that the percentage of predictability and goodness of fit of the models increased significantly with isotonic regression analysis, and as a result, more consis- tent adult weight estimations could be made.
Anahtar Kelime: İvesi Koyunlarının Büyüme Eğrilerinin İzotonik Regresyon Analizi ile Tahmin Edilmesi
Öz: Bu çalışmada farklı kalite uyum değerlendiricileri ile ilişkili olarak büyüme eğrisini tanımlamak için kullanılan doğrusal olmayan regresyon modellerini sınıflandırmak için izotonik regresyon analiz yöntemi kullanmıştır. İvesi ırkı koyunlarından elde edilen ağırlık-yaş verileri kullanılarak, en iyi model seçimi yapılmıştır. Uyum kalitesi belirleme katsayısı, Akaike bilgi kriteri, Bayes bilgi kriteri, ortalama ikinci dereceden tahmin hatası ve tahmin edilen belirleme katsayısı ile ölçülen on adet doğrusal olmayan model kullanılmıştır. İvesi koyunlarının büyüme eğrilerini tahmin etmek için kullanılan farklı lineer olmayan modeller ve bu modellere uygulanan izotonik regresyon ana- lizi sonucunda MSE ve R2 değerleri dikkate alındığında Von Bertalanffy modelin en uygun model olduğu ortaya çıkmıştır. Sonuç olarak, izotonik regresyon analizi ile modellerin tahmin edilebilirlik yüzdesinin ve uyum iyiliğinin önemli ölçüde arttığı ve bunun sonucunda daha tutarlı ergin canlı ağırlık tahminlerinin yapılabileceği ortaya çıkmıştır
Anahtar Kelime: Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
- Akbaş, Y., Taskin, T., & Demiroren, E. (1999). Comparison of several models to fit the growth curves of Kivircik and Daglic male lambs. Turkish Journal of Veterinary and Animal Science, 23, 537–544.
- Aytekin, I., Karabacak, A., Zülkadir, U., Keskin, I., & Boztepe, S. (2009). Usage of some models for describing the growth curves of Akkaraman and Anatolia Merino lambs raised in open and closed sheepfolds at the fattening period. Selçuk Journal of Agriculture and Food Sciences, 23(49), 30–35.
- Aytekin, I., Zulkadir, U., Keskin, I., & Boztepe, S. (2010). Fitting of different mathematic models to the growth curves of femaleMalya lambs weaned at two different live weights. Trends Anim. Veterinary Sci- ences, 1, 19–23.
- Barlow, R. E. (1972). Statistical inference under order restrictions: The theory and application of isotonic regression. London: J. Wiley.
- Bilgin, O. C., Esenbuga, N., Macit, M., & Karaoglu, M. (2004). Growth curve characteristics in Awassi and Morkaraman sheep, Part I: comparison of nonlinear functions. Wool Technology and Sheep Breeding, 52, 1–7.
- Carneiro, P. L. S., Malhado, C. H. M., Souza Júnior, A. A. Od, Silva, A. G. Sd, Santos, F. Nd, Santos, P. F., & Paiva, S. R. (2007). Desenvolvimento ponderal e diversidade fenotípica entre cruza-mentos de ovinos Dorper com raças locais. Pesquisa Agropecuária Brasileira, 42(7), 991–998. [CrossRef]
- Ghafouri-Kesbi, F. G., & Notter, D. R. (2016). Sex influence on genetic expressions of early growth in Afshari lambs. Archives Animal Breed- ing, 59(1), 9–17. [CrossRef]
- Gunn, L. H., & Dunson, D. B. (2005). A transformation approach for incor- porating monotone or unimodal constraints. Biostatistics, 6(3), 434–449. [CrossRef]
- Hussian, M., Grimval, A., Burdakov, O., & Sysoev, O. (2004). Monotonic regression for assessment of trends in environmental quality data. Eccomas Jyvaskyl, 1, 24–28.
- Lewis, R. M., Emmans, G. C., Dingwall, W. S., & Simm, G. (2002). A descrip- tion of the growth of sheep and its genetic analysis. Animal Science, 74(1), 51–62. [CrossRef]
- Malhado, C. H. M., Carneiro, P. L. S., & Mello, P. R. A. M. (2009). Growth curves in Dorper sheep crossed with the local Brazilian breeds. Morada Nova. Rabo Largo. and Santa Inês. Small Ruminant Research, 84, 16–21.
- Mendes, P. N., Muniz, J. A., Silva, F. F., Mazzini, A. R. A., & Silva, N. A. M. (2009). Análise da curva de crescimento difásica de fêmeas Hereford por meio da função não-linear de Gompertz. Ciência Animal Bra - sileira, 10(2), 454–461.
- R Core Team. (2014). R: A language and environment for statistical com- puting. Vienna: R Foundation for Statistical Computing. Retrieved from http://www.R-project.org
- Ramsay, J. O. (1998). Estimating smooth monotone functions. Royal Sta- tistical Society, 60(2), 365–375. [CrossRef]
- Silveira, F. Gd, Silva, F. Fe, Carneiro, P. L. S., Malhado, C. H. M., & Muniz, J. A. (2011). Análise de agrupamento na seleção de modelos de regressão não-lineares para curvas de crescimento de ovinos cruza- dos. Ciência Rural, 41(4), 692–698. [CrossRef]
- Topai, M., & Macit, M. (2004). Prediction of body weight from body meas- urements in Morkaraman sheep. Journal of Applied Animal Research, 25(2), 97–100. [CrossRef]
| APA | Yaganoglu A (2022). Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. , 67 - 70. 10.17097/ataunizfd.1002002 |
| Chicago | Yaganoglu A. Mutlu Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. (2022): 67 - 70. 10.17097/ataunizfd.1002002 |
| MLA | Yaganoglu A. Mutlu Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. , 2022, ss.67 - 70. 10.17097/ataunizfd.1002002 |
| AMA | Yaganoglu A Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. . 2022; 67 - 70. 10.17097/ataunizfd.1002002 |
| Vancouver | Yaganoglu A Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. . 2022; 67 - 70. 10.17097/ataunizfd.1002002 |
| IEEE | Yaganoglu A "Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis." , ss.67 - 70, 2022. 10.17097/ataunizfd.1002002 |
| ISNAD | Yaganoglu, A. Mutlu. "Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis". (2022), 67-70. https://doi.org/10.17097/ataunizfd.1002002 |
| APA | Yaganoglu A (2022). Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. Atatürk Üniversitesi Ziraat Fakültesi Dergisi, 53(1), 67 - 70. 10.17097/ataunizfd.1002002 |
| Chicago | Yaganoglu A. Mutlu Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. Atatürk Üniversitesi Ziraat Fakültesi Dergisi 53, no.1 (2022): 67 - 70. 10.17097/ataunizfd.1002002 |
| MLA | Yaganoglu A. Mutlu Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. Atatürk Üniversitesi Ziraat Fakültesi Dergisi, vol.53, no.1, 2022, ss.67 - 70. 10.17097/ataunizfd.1002002 |
| AMA | Yaganoglu A Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. Atatürk Üniversitesi Ziraat Fakültesi Dergisi. 2022; 53(1): 67 - 70. 10.17097/ataunizfd.1002002 |
| Vancouver | Yaganoglu A Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis. Atatürk Üniversitesi Ziraat Fakültesi Dergisi. 2022; 53(1): 67 - 70. 10.17097/ataunizfd.1002002 |
| IEEE | Yaganoglu A "Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis." Atatürk Üniversitesi Ziraat Fakültesi Dergisi, 53, ss.67 - 70, 2022. 10.17097/ataunizfd.1002002 |
| ISNAD | Yaganoglu, A. Mutlu. "Estimation of Growth Curves of Awassi Sheep by Isotonic Regression Analysis". Atatürk Üniversitesi Ziraat Fakültesi Dergisi 53/1 (2022), 67-70. https://doi.org/10.17097/ataunizfd.1002002 |
