Research Article

Modeling of Native Sheep Breeds in Türkiye by Years with Nonlinear Mathematical Models

Volume: 11 Number: 2 December 29, 2025
EN TR

Modeling of Native Sheep Breeds in Türkiye by Years with Nonlinear Mathematical Models

Abstract

This research aims to model the changes over time regarding the data on the number of breeds (thousands piece) of native sheep breeds (Karaman, İvesi, Dağlıç, Kıvırcık, Sakız, Karakaya, Ramlıç, Pırlak, Pırıt, Polatlı, Karya, Asaf, Malya, Bafra, Menemen, Tahirova, Koçeri, Zom, Karakaş, Eşme, Norduz, Gökçeada, Acıpayam, Hemşin, Herik, Tuj, Karagül) published by Turkish Statistical Institute (TUIK) between 2000-2023. In the study, these data were estimated using 12 different models (Richard, Gompertz, Gamma, Orskov, McNally, Brody, Weibull, Quadratic, Wood, Wilmink, Cubic Piecewise, Cubic). The accuracy of the models was evaluated using statistical measures such as mean square error, adjusted coefficient of determination, accuracy and bias factors, Akaike information criterion, adjusted Akaike information criterion and Bayesian information criterion. The results showed that the Wilmink model provided the most appropriate prediction model by obtaining the lowest values. These findings emphasize the importance of correct model selection and it is recommended that these models be examined in more detail with longer-term data in future studies

Keywords

References

  1. [1] T.C. Türkiye İstatistik Kurumu (TÜİK), “Türkiye İstatistik Kurumu verileri”. [Çevrimiçi]. Erişim adresi: http://www.tuik.gov.tr/PreTablo.do?alt_id, Erişim: 29.08.2024.
  2. [2] TAGEM, “Yıllık faaliyet raporu”. [Çevrimiçi]. Erişim adresi: https://www.tarimorman.gov.tr, Erişim: 30.01.2021.
  3. [3] Gıda Tarım ve Hayvancılık Bakanlığı (GTHB), “Gıda Tarım ve Hayvancılık Bakanlığı 2018–2022 stratejik planı”. [Çevrimiçi]. Erişim adresi: https://www.tarimorman.gov.tr, Erişim: 02.06.2021.
  4. [4] M. Özder, M. Kaymakçı, T. Taşkın, E. Köycü, F. Karaağaç ve R. Sönmez, “Türk geldi koyun tipinin gelişme ve süt verim özellikleri”, Turkish Journal of Veterinary and Animal Sciences, c. 28, sy 1, ss. 195–200, 2004.
  5. [5] M. Kaymakçı ve T. Taşkın, “Türkiye koyunculuğunda melezleme çalışmaları”, Hayvansal Üretim, c. 49, sy 2, ss. 43–51, 2008.
  6. [6] R. Sönmez, M. Kaymakçı, E. Eliçin, E. Tuncel, R. Wasmuth ve T. Taşkın, “Türkiye koyun ıslah çalışmaları”, Uludağ Üniversitesi Ziraat Fakültesi Dergisi, c. 23, sy 2, ss. 43–65, 2009.
  7. [7] O. Karaca, “Koyun keçi ıslahı ve açık çekirdek yetiştirme sistemi”, Koyun-Keçi Genetik Islah Çalıştayı, Uşak, Türkiye, 2014.
  8. [8] J. S. Gavora ve R. J. Parker, “Mathematical model of egg production”, Poultry Science, c. 50, ss. 1306–1315, 1971.

Details

Primary Language

English

Subjects

Statistical Analysis

Journal Section

Research Article

Publication Date

December 29, 2025

Submission Date

July 3, 2025

Acceptance Date

November 8, 2025

Published in Issue

Year 2025 Volume: 11 Number: 2

APA
Şahin, M., & Gök, İ. (2025). Modeling of Native Sheep Breeds in Türkiye by Years with Nonlinear Mathematical Models. International Journal of Pure and Applied Sciences, 11(2), 527-533. https://doi.org/10.29132/ijpas.1734102
AMA
1.Şahin M, Gök İ. Modeling of Native Sheep Breeds in Türkiye by Years with Nonlinear Mathematical Models. International Journal of Pure and Applied Sciences. 2025;11(2):527-533. doi:10.29132/ijpas.1734102
Chicago
Şahin, Mustafa, and İsmail Gök. 2025. “Modeling of Native Sheep Breeds in Türkiye by Years With Nonlinear Mathematical Models”. International Journal of Pure and Applied Sciences 11 (2): 527-33. https://doi.org/10.29132/ijpas.1734102.
EndNote
Şahin M, Gök İ (December 1, 2025) Modeling of Native Sheep Breeds in Türkiye by Years with Nonlinear Mathematical Models. International Journal of Pure and Applied Sciences 11 2 527–533.
IEEE
[1]M. Şahin and İ. Gök, “Modeling of Native Sheep Breeds in Türkiye by Years with Nonlinear Mathematical Models”, International Journal of Pure and Applied Sciences, vol. 11, no. 2, pp. 527–533, Dec. 2025, doi: 10.29132/ijpas.1734102.
ISNAD
Şahin, Mustafa - Gök, İsmail. “Modeling of Native Sheep Breeds in Türkiye by Years With Nonlinear Mathematical Models”. International Journal of Pure and Applied Sciences 11/2 (December 1, 2025): 527-533. https://doi.org/10.29132/ijpas.1734102.
JAMA
1.Şahin M, Gök İ. Modeling of Native Sheep Breeds in Türkiye by Years with Nonlinear Mathematical Models. International Journal of Pure and Applied Sciences. 2025;11:527–533.
MLA
Şahin, Mustafa, and İsmail Gök. “Modeling of Native Sheep Breeds in Türkiye by Years With Nonlinear Mathematical Models”. International Journal of Pure and Applied Sciences, vol. 11, no. 2, Dec. 2025, pp. 527-33, doi:10.29132/ijpas.1734102.
Vancouver
1.Mustafa Şahin, İsmail Gök. Modeling of Native Sheep Breeds in Türkiye by Years with Nonlinear Mathematical Models. International Journal of Pure and Applied Sciences. 2025 Dec. 1;11(2):527-33. doi:10.29132/ijpas.1734102

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