Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase

Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase

The objective of this study was to evaluate the effect of dietary energy level reduction and xylanase inclusion on the performance and on intestinal mucosa morphometry of two- to six-week-old laying hens. In total, 400 Hy-line W36 laying hens were distributed according to a completely randomized design in 2 x 2 factorial arrangement (energy level x inclusion of xylanase), totaling four treatments with 10 replicates of 10 birds per experimental unit. The following treatments were evaluated: positive control (balanced diet); positive control + xylanase; negative control (diet with of 100 kcal ME reduction /kg); negative control + xylanase. Body weight, weight gain, feed conversion ratio, uniformity and livability were not influenced by diets with metabolizable energy reduction and xylanase inclusion; however, the addition of xylanase to the diets resulted in shallower crypts depth and greater villus:crypt ratio in the ileum. The energy reduction of the diet associated with the supplementation of xylanase did not influence performance, but increased the feed intake of 2- to 6-week-old laying hens and increased villus height in the ileum of 6-wk-old hens. Xylanase reduces crypt depth in the ileum of 6-week-old hens.

Saved in:
Bibliographic Details
Main Authors: Souza,KMR de, Faria,DE de, Araújo,RB, Sakamoto,MI, Santos,TT dos, Kikuchi,C de G, Nakashima,DT, Caetano,VC
Format: Digital revista
Language:English
Published: Fundacao de Apoio a Ciência e Tecnologia Avicolas 2014
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300003
Tags: Add Tag
No Tags, Be the first to tag this record!
id oai:scielo:S1516-635X2014000300003
record_format ojs
spelling oai:scielo:S1516-635X20140003000032014-10-01Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanaseSouza,KMR deFaria,DE deAraújo,RBSakamoto,MISantos,TT dosKikuchi,C de GNakashima,DTCaetano,VC Body weight crypt depth energy reduction flock uniformity villus height The objective of this study was to evaluate the effect of dietary energy level reduction and xylanase inclusion on the performance and on intestinal mucosa morphometry of two- to six-week-old laying hens. In total, 400 Hy-line W36 laying hens were distributed according to a completely randomized design in 2 x 2 factorial arrangement (energy level x inclusion of xylanase), totaling four treatments with 10 replicates of 10 birds per experimental unit. The following treatments were evaluated: positive control (balanced diet); positive control + xylanase; negative control (diet with of 100 kcal ME reduction /kg); negative control + xylanase. Body weight, weight gain, feed conversion ratio, uniformity and livability were not influenced by diets with metabolizable energy reduction and xylanase inclusion; however, the addition of xylanase to the diets resulted in shallower crypts depth and greater villus:crypt ratio in the ileum. The energy reduction of the diet associated with the supplementation of xylanase did not influence performance, but increased the feed intake of 2- to 6-week-old laying hens and increased villus height in the ileum of 6-wk-old hens. Xylanase reduces crypt depth in the ileum of 6-week-old hens.info:eu-repo/semantics/openAccessFundacao de Apoio a Ciência e Tecnologia AvicolasBrazilian Journal of Poultry Science v.16 n.3 20142014-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300003en10.1590/1516-635x1603241-248
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Souza,KMR de
Faria,DE de
Araújo,RB
Sakamoto,MI
Santos,TT dos
Kikuchi,C de G
Nakashima,DT
Caetano,VC
spellingShingle Souza,KMR de
Faria,DE de
Araújo,RB
Sakamoto,MI
Santos,TT dos
Kikuchi,C de G
Nakashima,DT
Caetano,VC
Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
author_facet Souza,KMR de
Faria,DE de
Araújo,RB
Sakamoto,MI
Santos,TT dos
Kikuchi,C de G
Nakashima,DT
Caetano,VC
author_sort Souza,KMR de
title Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
title_short Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
title_full Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
title_fullStr Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
title_full_unstemmed Performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
title_sort performance and morphometry of the intestinal mucosa of laying hens fed diets containing xylanase
description The objective of this study was to evaluate the effect of dietary energy level reduction and xylanase inclusion on the performance and on intestinal mucosa morphometry of two- to six-week-old laying hens. In total, 400 Hy-line W36 laying hens were distributed according to a completely randomized design in 2 x 2 factorial arrangement (energy level x inclusion of xylanase), totaling four treatments with 10 replicates of 10 birds per experimental unit. The following treatments were evaluated: positive control (balanced diet); positive control + xylanase; negative control (diet with of 100 kcal ME reduction /kg); negative control + xylanase. Body weight, weight gain, feed conversion ratio, uniformity and livability were not influenced by diets with metabolizable energy reduction and xylanase inclusion; however, the addition of xylanase to the diets resulted in shallower crypts depth and greater villus:crypt ratio in the ileum. The energy reduction of the diet associated with the supplementation of xylanase did not influence performance, but increased the feed intake of 2- to 6-week-old laying hens and increased villus height in the ileum of 6-wk-old hens. Xylanase reduces crypt depth in the ileum of 6-week-old hens.
publisher Fundacao de Apoio a Ciência e Tecnologia Avicolas
publishDate 2014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300003
work_keys_str_mv AT souzakmrde performanceandmorphometryoftheintestinalmucosaoflayinghensfeddietscontainingxylanase
AT fariadede performanceandmorphometryoftheintestinalmucosaoflayinghensfeddietscontainingxylanase
AT araujorb performanceandmorphometryoftheintestinalmucosaoflayinghensfeddietscontainingxylanase
AT sakamotomi performanceandmorphometryoftheintestinalmucosaoflayinghensfeddietscontainingxylanase
AT santosttdos performanceandmorphometryoftheintestinalmucosaoflayinghensfeddietscontainingxylanase
AT kikuchicdeg performanceandmorphometryoftheintestinalmucosaoflayinghensfeddietscontainingxylanase
AT nakashimadt performanceandmorphometryoftheintestinalmucosaoflayinghensfeddietscontainingxylanase
AT caetanovc performanceandmorphometryoftheintestinalmucosaoflayinghensfeddietscontainingxylanase
_version_ 1756423014353731584

Similar Items