Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows

Abstract: The objective of this research was to evaluate the effect of adding protected protease to low-amino acids (AA) diets on the growth performance of barrows. Three decreasing levels of AA (protein levels), with or without the addition of protease were fed to 48 hybrid barrows (27.42±3.48 kg i...

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Autores principales:	Figueroa,Jose L., Martinez,Jose A., Sanchez-Torres,Maria T., Cordero,Jose L., Martinez,Manuel, Valdez,Victor M., Ruiz,Agustin
Lenguaje:	English
Publicado:	Universidad Austral de Chile. Facultad de Ciencias Veterinarias 2019
Materias:	protein content swine growth performance carcass characteristics
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-81322019000200053
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spelling	oai:scielo:S0719-813220190002000532019-05-17Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrowsFigueroa,Jose L.Martinez,Jose A.Sanchez-Torres,Maria T.Cordero,Jose L.Martinez,ManuelValdez,Victor M.Ruiz,Agustin protein content swine growth performance carcass characteristics Abstract: The objective of this research was to evaluate the effect of adding protected protease to low-amino acids (AA) diets on the growth performance of barrows. Three decreasing levels of AA (protein levels), with or without the addition of protease were fed to 48 hybrid barrows (27.42±3.48 kg initial body weight). The experimental design was a completely randomised with a factorial arrangement of treatments. An analysis of variance was performed with GLM of SAS and the means comparison was performed with Tukey test (P<0.05). The productive performance was not affected by addition of proteases in the diet at the three stages (P>0.05). Only in growing barrows, the interaction of standard protein diet and protease reduced backfat thickness (P<0.05). Protein level in finishing I barrows did not affect (P>0.05) growth performance variables. Low-protein diets increased (P<0.05) average daily gain, final body weight and fat-free lean gain in growing and finishing II barrows. Concentration of urea in plasma decreased with the reduction of CP and increased with the addition of protease (P<0.05) at the three stages. In conclusion, low protein diets improved or maintained growth performance variables and reduced the plasma urea nitrogen, whereas supplementation with protease did not show any effect on productive performance.info:eu-repo/semantics/openAccessUniversidad Austral de Chile. Facultad de Ciencias VeterinariasAustral journal of veterinary sciences v.51 n.2 20192019-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-81322019000200053en10.4067/S0719-81322019000200053
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	protein content swine growth performance carcass characteristics
spellingShingle	protein content swine growth performance carcass characteristics Figueroa,Jose L. Martinez,Jose A. Sanchez-Torres,Maria T. Cordero,Jose L. Martinez,Manuel Valdez,Victor M. Ruiz,Agustin Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows
description	Abstract: The objective of this research was to evaluate the effect of adding protected protease to low-amino acids (AA) diets on the growth performance of barrows. Three decreasing levels of AA (protein levels), with or without the addition of protease were fed to 48 hybrid barrows (27.42±3.48 kg initial body weight). The experimental design was a completely randomised with a factorial arrangement of treatments. An analysis of variance was performed with GLM of SAS and the means comparison was performed with Tukey test (P<0.05). The productive performance was not affected by addition of proteases in the diet at the three stages (P>0.05). Only in growing barrows, the interaction of standard protein diet and protease reduced backfat thickness (P<0.05). Protein level in finishing I barrows did not affect (P>0.05) growth performance variables. Low-protein diets increased (P<0.05) average daily gain, final body weight and fat-free lean gain in growing and finishing II barrows. Concentration of urea in plasma decreased with the reduction of CP and increased with the addition of protease (P<0.05) at the three stages. In conclusion, low protein diets improved or maintained growth performance variables and reduced the plasma urea nitrogen, whereas supplementation with protease did not show any effect on productive performance.
author	Figueroa,Jose L. Martinez,Jose A. Sanchez-Torres,Maria T. Cordero,Jose L. Martinez,Manuel Valdez,Victor M. Ruiz,Agustin
author_facet	Figueroa,Jose L. Martinez,Jose A. Sanchez-Torres,Maria T. Cordero,Jose L. Martinez,Manuel Valdez,Victor M. Ruiz,Agustin
author_sort	Figueroa,Jose L.
title	Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows
title_short	Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows
title_full	Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows
title_fullStr	Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows
title_full_unstemmed	Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows
title_sort	evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows
publisher	Universidad Austral de Chile. Facultad de Ciencias Veterinarias
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0719-81322019000200053
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_version_	1714207278556512256

Evaluation of reduced amino acids diets added with protected protease on productive performance in 25-100 kg barrows

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