Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction


  • Mohammad Hadaeghi Islamic Azad University
  • Carmen Avilés-Ramírez University of Córdoba
  • Alireza Seidavi Islamic Azad University
  • Leila Asadpour Islamic Azad University
  • Nieves Núñez-Sánchez University of Córdoba
  • Andrés L. Martínez-Marín University of Córdoba



broilers, broiler chicken, catch-up growth, compensatory growth, feed restriction, feeding, immunity, nutrient-dense diet, nutrition, poultry, growth performance


Background: The use of early nutrient-restriction programs in broilers can prevent complications such as increased body fat deposition and its consequences. However, feed restriction not always gives the expected results. Objective: To assess the effect of two levels of feed restriction followed by a re-alimentation period with five increasing nutrient levels on growth performance and immune response of broiler chickens. Methods: A total of 330 animals were used. The treatments were: 25 (T25) and 35% (T35) quantitative feed restriction during the starting period, and 0, 2.5, 5, 7.5, 10, and 15% increased energy and protein contents during the growing and finishing periods. Results: For all the T25 treatments, except for T25-0, feed intake (FI) and body weight gain (BWG) were higher, and feed conversion rate (FCR) was lower (p<0.05) compared to the control treatment. In that group, the response of FI and BWG to the increased nutrient density was mostly quadratic (p<0.001), whereas that of FCR was linear (p<0.001). The FI and BWG results were less homogeneous in the T35 treatments, but FCR was lower compared to the control treatment (p<0.05) in all of them. The FCR showed no differences (p>0.05) between treatments during the finishing period. Conclusion: Feeding a nutrient-dense diet after a period of mild feed restriction gives the best results, while increasing nutrient density after a more severe feed restriction does not improve productive results compared to a standard diet. Carcass traits and immune function were not affected by restriction level or nutrient density.

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Author Biographies

Mohammad Hadaeghi, Islamic Azad University
Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran.

Carmen Avilés-Ramírez, University of Córdoba
Department of Bromatology and Food Technology, University of Córdoba, Campus de Rabanales, Córdoba, Spain.

Alireza Seidavi, Islamic Azad University
Department of Animal Science, Rasht Branch, Islamic Azad University, Rasht, Iran.

Leila Asadpour, Islamic Azad University
Department of Veterinary Science, Rasht Branch, Islamic Azad University, Rasht, Iran.

Nieves Núñez-Sánchez, University of Córdoba
Department of Animal Production, University of Córdoba, Rabanales Campus, Córdoba, Spain.

Andrés L. Martínez-Marín, University of Córdoba
Department of Animal Production, University of Córdoba, Rabanales Campus, Córdoba, Spain.


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How to Cite

Hadaeghi, M., Avilés-Ramírez, C., Seidavi, A., Asadpour, L., Núñez-Sánchez, N., & Martínez-Marín, A. L. (2020). Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction. Revista Colombiana De Ciencias Pecuarias, 34(3), 189–199.



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