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Journals / Black Sea Journal of Agriculture / 2026 / Cilt: 7 Sayı: 3

Comparison of Nonlinear Models to Describe the Growth of Tuj and Romanov x Tuj (F1) Lambs

Ülkü Dağdelen(ATATÜRK ÜNİVERSİTESİ)0000-0002-5167-8255
Nurinisa Esenbuğa(ATATÜRK ÜNİVERSİTESİ)0000-0002-2036-8369
Pages
305–309
Publication Date
2024-05-15
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Therefore, the Brody model was identified as the most effective model for explaining growth patterns in both Tuj and RoxTuj (F1) lambs.

📌 3 Key Takeaways

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Objective & Hypothesis:This study aimed to identify the most suitable model for explaining weight changes in purebred Tuj (n=35) and Romanov x Tuj (RoxTuj) (F1) (n=25) lambs using non-linear models.
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Key Findings & Data:It was observed that the Brody model had the highest R2 and lowest MSE, AIC and BIC values for Tuj and RoxTuj (F1) female and male lambs.
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Conclusion & Impact:Therefore, the Brody model was identified as the most effective model for explaining growth patterns in both Tuj and RoxTuj (F1) lambs.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Growth curves · Non-parametric models · Tuj

Abstract

This study aimed to identify the most suitable model for explaining weight changes in purebred Tuj (n=35) and Romanov x Tuj (RoxTuj) (F1) (n=25) lambs using non-linear models. Single-born lambs of both breeds and genders were included in the evaluation. Five different non-linear growth models were compared: Brody, Gompertz, Logistic, Richards, and Weibull. The best model for describing growth was chosen based on four criteria: coefficient of determination (R²), mean square error (MSE), Akaike information criterion (AIC), and Bayesian information criterion (BIC). Models with the highest R² and the lowest MSE, AIC, and BIC values were considered the best fit for the data. It was observed that the Brody model had the highest R2 and lowest MSE, AIC and BIC values for Tuj and RoxTuj (F1) female and male lambs. The Gompertz, Logistic, and Richards models exhibited similar predictive performance. In contrast, the Weibull model produced significantly different results compared to the other models when predicting weight changes. Therefore, the Brody model was identified as the most effective model for explaining growth patterns in both Tuj and RoxTuj (F1) lambs.

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Cite This Article

Dağdelen, Ü., Esenbuğa, N. (2024). Comparison of Nonlinear Models to Describe the Growth of Tuj and Romanov x Tuj (F1) Lambs. Black Sea Journal of Agriculture, Cilt: 7 Sayı: 3, 305–309. https://doi.org/10.47115/bsagriculture.1457139

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