Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phase

Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phase

Abstract The objective of this study was to evaluate the effects of different levels of digestible lysine, at fixed amino acid ratios, in performance, blood parameters and diet digestibility of barrows from 15 to 30 kg. Fifty barrows of the Duroc breed with an average initial body weight of 14.95±3.22 kg were assigned to five treatments in a completely randomized experimental design with five replicates and of two animals per experimental unit. Treatments consisted of crude protein and lysine levels, maintaining a fixed ratio with the other digestible amino acids (8.4, 9.4, 10.4, 11.4, and 12.4 g kg–1lysine/kg of diet). The feed conversion decreased linearly according to lysine levels. The apparent digestibility coefficients of dry matter and crude protein increased linearly, and the same response was observed for serum total protein and urea. The results indicate that digestible lysine level for Duroc barrows in the starter phase is 12.4 g kg–1 of diet, as it improved feed conversion ratio and apparent nutrient digestibility.

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Main Authors: PALHARES,LILIANE O., JUNIOR,WILSON M.D., SILVA,MARCONI I.L. DA, CRUZ,MATHEUS S. DA, LIMA,KAROLAYNE R.S. DE, SÁ,KALINE A.L. DE, BARBOSA,EMANUELA N.R., LUDKE,MARIA C.M.M.
Format: Digital revista
Language:English
Published: Academia Brasileira de Ciências 2022
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000301402
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spelling oai:scielo:S0001-376520220003014022022-04-27Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phasePALHARES,LILIANE O.JUNIOR,WILSON M.D.SILVA,MARCONI I.L. DACRUZ,MATHEUS S. DALIMA,KAROLAYNE R.S. DESÁ,KALINE A.L. DEBARBOSA,EMANUELA N.R.LUDKE,MARIA C.M.M. Amino acid ideal protein nutrition nutritional requirement Abstract The objective of this study was to evaluate the effects of different levels of digestible lysine, at fixed amino acid ratios, in performance, blood parameters and diet digestibility of barrows from 15 to 30 kg. Fifty barrows of the Duroc breed with an average initial body weight of 14.95±3.22 kg were assigned to five treatments in a completely randomized experimental design with five replicates and of two animals per experimental unit. Treatments consisted of crude protein and lysine levels, maintaining a fixed ratio with the other digestible amino acids (8.4, 9.4, 10.4, 11.4, and 12.4 g kg–1lysine/kg of diet). The feed conversion decreased linearly according to lysine levels. The apparent digestibility coefficients of dry matter and crude protein increased linearly, and the same response was observed for serum total protein and urea. The results indicate that digestible lysine level for Duroc barrows in the starter phase is 12.4 g kg–1 of diet, as it improved feed conversion ratio and apparent nutrient digestibility.info:eu-repo/semantics/openAccessAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências v.94 n.2 20222022-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000301402en10.1590/0001-3765202220190516
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libraryname SciELO
language English
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author PALHARES,LILIANE O.
JUNIOR,WILSON M.D.
SILVA,MARCONI I.L. DA
CRUZ,MATHEUS S. DA
LIMA,KAROLAYNE R.S. DE
SÁ,KALINE A.L. DE
BARBOSA,EMANUELA N.R.
LUDKE,MARIA C.M.M.
spellingShingle PALHARES,LILIANE O.
JUNIOR,WILSON M.D.
SILVA,MARCONI I.L. DA
CRUZ,MATHEUS S. DA
LIMA,KAROLAYNE R.S. DE
SÁ,KALINE A.L. DE
BARBOSA,EMANUELA N.R.
LUDKE,MARIA C.M.M.
Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phase
author_facet PALHARES,LILIANE O.
JUNIOR,WILSON M.D.
SILVA,MARCONI I.L. DA
CRUZ,MATHEUS S. DA
LIMA,KAROLAYNE R.S. DE
SÁ,KALINE A.L. DE
BARBOSA,EMANUELA N.R.
LUDKE,MARIA C.M.M.
author_sort PALHARES,LILIANE O.
title Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phase
title_short Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phase
title_full Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phase
title_fullStr Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phase
title_full_unstemmed Effects of lysine levels on performance, blood parameters, and nutrient digestibility of Duroc barrows in the starter phase
title_sort effects of lysine levels on performance, blood parameters, and nutrient digestibility of duroc barrows in the starter phase
description Abstract The objective of this study was to evaluate the effects of different levels of digestible lysine, at fixed amino acid ratios, in performance, blood parameters and diet digestibility of barrows from 15 to 30 kg. Fifty barrows of the Duroc breed with an average initial body weight of 14.95±3.22 kg were assigned to five treatments in a completely randomized experimental design with five replicates and of two animals per experimental unit. Treatments consisted of crude protein and lysine levels, maintaining a fixed ratio with the other digestible amino acids (8.4, 9.4, 10.4, 11.4, and 12.4 g kg–1lysine/kg of diet). The feed conversion decreased linearly according to lysine levels. The apparent digestibility coefficients of dry matter and crude protein increased linearly, and the same response was observed for serum total protein and urea. The results indicate that digestible lysine level for Duroc barrows in the starter phase is 12.4 g kg–1 of diet, as it improved feed conversion ratio and apparent nutrient digestibility.
publisher Academia Brasileira de Ciências
publishDate 2022
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000301402
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