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

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...

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Autores principales:	Mohammad Hadaeghi, Carmen Avilés-Ramírez, Alireza Seidavi, Leila Asadpour, Nieves Núñez-Sánchez, Andrés L. Martínez-Marín
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2020
Materias:	broilers broiler chicken catch-up growth compensatory growth feed restriction feeding immunity nutrient-dense diet nutrition poultry growth performance Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/6534ba04000144a2bf4c421239558e96
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spelling	oai:doaj.org-article:6534ba04000144a2bf4c421239558e962021-12-01T15:02:46ZImprovement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction2256-295810.17533/udea.rccp.v34n3a02https://doaj.org/article/6534ba04000144a2bf4c421239558e962020-08-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/343314https://doaj.org/toc/2256-2958Background: 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.Mohammad HadaeghiCarmen Avilés-RamírezAlireza SeidaviLeila AsadpourNieves Núñez-SánchezAndrés L. Martínez-MarínUniversidad de Antioquiaarticlebroilersbroiler chickencatch-up growthcompensatory growthfeed restrictionfeedingimmunitynutrient-dense dietnutritionpoultrygrowth performanceAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 34, Iss 3, Pp 189-199 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	broilers broiler chicken catch-up growth compensatory growth feed restriction feeding immunity nutrient-dense diet nutrition poultry growth performance Animal culture SF1-1100
spellingShingle	broilers broiler chicken catch-up growth compensatory growth feed restriction feeding immunity nutrient-dense diet nutrition poultry growth performance Animal culture SF1-1100 Mohammad Hadaeghi Carmen Avilés-Ramírez Alireza Seidavi Leila Asadpour Nieves Núñez-Sánchez Andrés L. Martínez-Marín Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction
description	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.
format	article
author	Mohammad Hadaeghi Carmen Avilés-Ramírez Alireza Seidavi Leila Asadpour Nieves Núñez-Sánchez Andrés L. Martínez-Marín
author_facet	Mohammad Hadaeghi Carmen Avilés-Ramírez Alireza Seidavi Leila Asadpour Nieves Núñez-Sánchez Andrés L. Martínez-Marín
author_sort	Mohammad Hadaeghi
title	Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction
title_short	Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction
title_full	Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction
title_fullStr	Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction
title_full_unstemmed	Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction
title_sort	improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction
publisher	Universidad de Antioquia
publishDate	2020
url	https://doaj.org/article/6534ba04000144a2bf4c421239558e96
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Improvement in broiler performance by feeding a nutrient-dense diet after a mild feed restriction

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