Effect of nonphytate phosphorus and phytase levels on broiler femur.

This experiment was carried out to evaluate the effect of nonphytate phosphorus (NPP) and phytase levels on the weight, morphometry and weight/length index (WLI) of broiler femurs at 21 and 42 days of age. One thousand, two hundred chicks were allocated in a completely randomized design and 4 x 3 fa...

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Main Authors: Luana Martins Schaly, Maria Cristina de Oliveira, Bruno Nunes Gonçalves, Antônio Carlos Laurentiz, Otto Mack Junqueira
Format: Article
Language:English
Published: Universidade Federal de Santa Catarina 2009-03-01
Series:Biotemas
Subjects:
Online Access:http://www.biotemas.ufsc.br/volumes/pdf/volume221/p81-85.pdf
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spelling doaj-2955bc599738493196162fa5d79f58332020-11-24T22:46:02ZengUniversidade Federal de Santa CatarinaBiotemas0103-16432009-03-012218185Effect of nonphytate phosphorus and phytase levels on broiler femur. Luana Martins SchalyMaria Cristina de OliveiraBruno Nunes GonçalvesAntônio Carlos LaurentizOtto Mack JunqueiraThis experiment was carried out to evaluate the effect of nonphytate phosphorus (NPP) and phytase levels on the weight, morphometry and weight/length index (WLI) of broiler femurs at 21 and 42 days of age. One thousand, two hundred chicks were allocated in a completely randomized design and 4 x 3 factorial arrangement (NPP x phytase levels), with four replicates. The NPP levels, at each phase were of 0.45, 0.37, 0.29 and 0.21% in the initial phase, 0.41, 0.33, 0.25 and 0.17% in the growth phase, and of 0.37, 0.29, 0.21 and 0.13% in the final phase. The phytase levels used were 0, 500 and 1000U/kg of diet. At 21 and 42 days of age, 48 birds were sacrificed for femur collection. At 21 days, there was no effect (P > 0.05) of NPP x phytase interaction on bone parameters, but the NPP reduction decreased (P < 0.05) the weight, length and WLI of the femurs, and the inclusion of 500U/kg of phytase improved (P < 0.05) the weight and WLI of the bones. At 42 days of age, NPP x phytase interaction was significant (P < 0.05) for the weight and length, and birds fed diets with no phytase had femurs that were lighter and shorter when the lowest NPP levels were evaluated. However, the inclusion of 500 or 1000U/kg of phytase produced weights and lengths similar to those produced by treatment with recommended NPP levels, and the lower NPP levels evaluated caused a reduction (P < 0.05) in the diameter and WLI of femurs. It was concluded that diets with 0.29, 0.25 or 0.21% of NPP, with 500 U/kg of phytase, could be used with no negative effect on the femur quality in broilers from one to 42 days of age.http://www.biotemas.ufsc.br/volumes/pdf/volume221/p81-85.pdfbone qualityenzymesphosphorus deficiency
collection DOAJ
language English
format Article
sources DOAJ
author Luana Martins Schaly
Maria Cristina de Oliveira
Bruno Nunes Gonçalves
Antônio Carlos Laurentiz
Otto Mack Junqueira
spellingShingle Luana Martins Schaly
Maria Cristina de Oliveira
Bruno Nunes Gonçalves
Antônio Carlos Laurentiz
Otto Mack Junqueira
Effect of nonphytate phosphorus and phytase levels on broiler femur.
Biotemas
bone quality
enzymes
phosphorus deficiency
author_facet Luana Martins Schaly
Maria Cristina de Oliveira
Bruno Nunes Gonçalves
Antônio Carlos Laurentiz
Otto Mack Junqueira
author_sort Luana Martins Schaly
title Effect of nonphytate phosphorus and phytase levels on broiler femur.
title_short Effect of nonphytate phosphorus and phytase levels on broiler femur.
title_full Effect of nonphytate phosphorus and phytase levels on broiler femur.
title_fullStr Effect of nonphytate phosphorus and phytase levels on broiler femur.
title_full_unstemmed Effect of nonphytate phosphorus and phytase levels on broiler femur.
title_sort effect of nonphytate phosphorus and phytase levels on broiler femur.
publisher Universidade Federal de Santa Catarina
series Biotemas
issn 0103-1643
publishDate 2009-03-01
description This experiment was carried out to evaluate the effect of nonphytate phosphorus (NPP) and phytase levels on the weight, morphometry and weight/length index (WLI) of broiler femurs at 21 and 42 days of age. One thousand, two hundred chicks were allocated in a completely randomized design and 4 x 3 factorial arrangement (NPP x phytase levels), with four replicates. The NPP levels, at each phase were of 0.45, 0.37, 0.29 and 0.21% in the initial phase, 0.41, 0.33, 0.25 and 0.17% in the growth phase, and of 0.37, 0.29, 0.21 and 0.13% in the final phase. The phytase levels used were 0, 500 and 1000U/kg of diet. At 21 and 42 days of age, 48 birds were sacrificed for femur collection. At 21 days, there was no effect (P > 0.05) of NPP x phytase interaction on bone parameters, but the NPP reduction decreased (P < 0.05) the weight, length and WLI of the femurs, and the inclusion of 500U/kg of phytase improved (P < 0.05) the weight and WLI of the bones. At 42 days of age, NPP x phytase interaction was significant (P < 0.05) for the weight and length, and birds fed diets with no phytase had femurs that were lighter and shorter when the lowest NPP levels were evaluated. However, the inclusion of 500 or 1000U/kg of phytase produced weights and lengths similar to those produced by treatment with recommended NPP levels, and the lower NPP levels evaluated caused a reduction (P < 0.05) in the diameter and WLI of femurs. It was concluded that diets with 0.29, 0.25 or 0.21% of NPP, with 500 U/kg of phytase, could be used with no negative effect on the femur quality in broilers from one to 42 days of age.
topic bone quality
enzymes
phosphorus deficiency
url http://www.biotemas.ufsc.br/volumes/pdf/volume221/p81-85.pdf
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