Fulani Ecotype Chicken Genetic Resource under a Pastured Poultry Management System – 2 – Evaluation for Persistency of Egg Lay

Authors

  • B. D. Adeniyi Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
  • S. O. Oseni Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria
  • O Anjorin Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria

Keywords:

Ecotype, Fulani, models, non-linear, persistency

Abstract

The objectives of this study were to describe egg-laying rate, evaluate the persistency of egg lay, and to characterise the laying patterns in Fulani ecotype hens (FEH) using non-linear models. Data on weekly egg production records of 83 laying hens up to 45 weeks of lay were used for this analysis. Four non-linear models including Gamma, Logistic-curvilinear, Compartmental, Narushin-Takma were fitted to describe the egg-laying rate, while the Grossman model was fitted to evaluate the persistency of egg lay. Goodness-of-fit criteria used included adjusted R2 (adj. R2 ), mean square error (MSE), and Akaike Information Criterion (AIC). The difference between the goodness-of-fit criterion (adj. R2 ) was small for all models for egg laying rate. However, based on the AIC and R2 values, Gamma and Narushin-Takma models presented the best fit. It was observed that the FEH could maintain constant egg production at weeks 9 to 11, and 39 to 41. In characterizing the laying patterns, FEH recorded double peaks at early and late laying periods. Overall, the data suggest that FEH are not persistent layers.

Author Biographies

B. D. Adeniyi, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria

Department of Animal Sciences

S. O. Oseni, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria

Department of Animal Sciences

O Anjorin, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria

Department of Animal Sciences

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Published

2024-07-09

How to Cite

Adeniyi, B. D. ., Oseni, S. O., & Anjorin, O. (2024). Fulani Ecotype Chicken Genetic Resource under a Pastured Poultry Management System – 2 – Evaluation for Persistency of Egg Lay . Nigerian Journal of Animal Production, 60–63. Retrieved from https://njap.org.ng/index.php/njap/article/view/4226

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