Multi-objective optimization of methionine+cysteine levels in diets for growing pigs

Background: The addition of synthetic methionine to growing pig diets should consider the requirements of the methionine+cysteine complex, as most cysteine is obtained through dietary methionine. Objective: To determine an optimal level of methionine+cysteine (Met+Cys) in growing pig diets. Methods:...

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Autores principales:	José L. Figueroa-Velasco, José A. Martínez-Aispuro, María T. Sánchez-Torres, Humberto Vaquera-Huerta, José L. Cordero-Mora, Rafael Nieto-Aquino
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2020
Materias:	carcass characteristics cysteine growth performance methionine nutritional requirements protein pigs sulfur amino acids swine nutrition Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/90edb2fe8b3c45b38a59a6d1bcf24cc8
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spelling	oai:doaj.org-article:90edb2fe8b3c45b38a59a6d1bcf24cc82021-12-01T15:21:15ZMulti-objective optimization of methionine+cysteine levels in diets for growing pigs2256-295810.17533/udea.rccp.v33n4a03https://doaj.org/article/90edb2fe8b3c45b38a59a6d1bcf24cc82020-04-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/341775https://doaj.org/toc/2256-2958Background: The addition of synthetic methionine to growing pig diets should consider the requirements of the methionine+cysteine complex, as most cysteine is obtained through dietary methionine. Objective: To determine an optimal level of methionine+cysteine (Met+Cys) in growing pig diets. Methods: Ninety-nine hybrid (Yorkshire×Landrace×Duroc) barrows were used in a completely randomized design (initial body weight: 25.90±3.99 kg). Nine levels of Met+Cys (0.500, 0.525, 0.550, 0.575, 0.600, 0.625, 0.650, 0.675, and 0.700%) were evaluated during 35 days. To determine a multi-objective optimal level of Met+Cys, growth performance and strongly related carcass traits were evaluated. Results: Average daily feed intake (ADFI) and feed:gain ratio (FGR) showed a linear response to the dietary Met+Cys level (p<0.05), with estimated optimal concentration at 0.700%. Average daily gain (ADG) did not show any effect on the Met+Cys level (p>0.05). Carcass characteristics were not affected by the Met+Cys concentration (p>0.05). The multi-objective optimal level for ADG, ADFI, and FGR was 0.667% Met+Cys. Conclusions: According to our results, 0.667% Met+Cys is the best concentration in diets for growing pigs.José L. Figueroa-VelascoJosé A. Martínez-AispuroMaría T. Sánchez-TorresHumberto Vaquera-HuertaJosé L. Cordero-MoraRafael Nieto-AquinoUniversidad de Antioquiaarticlecarcass characteristicscysteinegrowth performancemethioninenutritional requirementsproteinpigssulfur amino acidsswine nutritionAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 33, Iss 4, Pp 228-238 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	carcass characteristics cysteine growth performance methionine nutritional requirements protein pigs sulfur amino acids swine nutrition Animal culture SF1-1100
spellingShingle	carcass characteristics cysteine growth performance methionine nutritional requirements protein pigs sulfur amino acids swine nutrition Animal culture SF1-1100 José L. Figueroa-Velasco José A. Martínez-Aispuro María T. Sánchez-Torres Humberto Vaquera-Huerta José L. Cordero-Mora Rafael Nieto-Aquino Multi-objective optimization of methionine+cysteine levels in diets for growing pigs
description	Background: The addition of synthetic methionine to growing pig diets should consider the requirements of the methionine+cysteine complex, as most cysteine is obtained through dietary methionine. Objective: To determine an optimal level of methionine+cysteine (Met+Cys) in growing pig diets. Methods: Ninety-nine hybrid (Yorkshire×Landrace×Duroc) barrows were used in a completely randomized design (initial body weight: 25.90±3.99 kg). Nine levels of Met+Cys (0.500, 0.525, 0.550, 0.575, 0.600, 0.625, 0.650, 0.675, and 0.700%) were evaluated during 35 days. To determine a multi-objective optimal level of Met+Cys, growth performance and strongly related carcass traits were evaluated. Results: Average daily feed intake (ADFI) and feed:gain ratio (FGR) showed a linear response to the dietary Met+Cys level (p<0.05), with estimated optimal concentration at 0.700%. Average daily gain (ADG) did not show any effect on the Met+Cys level (p>0.05). Carcass characteristics were not affected by the Met+Cys concentration (p>0.05). The multi-objective optimal level for ADG, ADFI, and FGR was 0.667% Met+Cys. Conclusions: According to our results, 0.667% Met+Cys is the best concentration in diets for growing pigs.
format	article
author	José L. Figueroa-Velasco José A. Martínez-Aispuro María T. Sánchez-Torres Humberto Vaquera-Huerta José L. Cordero-Mora Rafael Nieto-Aquino
author_facet	José L. Figueroa-Velasco José A. Martínez-Aispuro María T. Sánchez-Torres Humberto Vaquera-Huerta José L. Cordero-Mora Rafael Nieto-Aquino
author_sort	José L. Figueroa-Velasco
title	Multi-objective optimization of methionine+cysteine levels in diets for growing pigs
title_short	Multi-objective optimization of methionine+cysteine levels in diets for growing pigs
title_full	Multi-objective optimization of methionine+cysteine levels in diets for growing pigs
title_fullStr	Multi-objective optimization of methionine+cysteine levels in diets for growing pigs
title_full_unstemmed	Multi-objective optimization of methionine+cysteine levels in diets for growing pigs
title_sort	multi-objective optimization of methionine+cysteine levels in diets for growing pigs
publisher	Universidad de Antioquia
publishDate	2020
url	https://doaj.org/article/90edb2fe8b3c45b38a59a6d1bcf24cc8
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Multi-objective optimization of methionine+cysteine levels in diets for growing pigs

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