Study of methodological variations in apparent nutrient metabolism determination in broiler chickens
Main Author: | |
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Publication Date: | 2009 |
Other Authors: | , , , |
Format: | Article |
Language: | eng |
Source: | Revista Brasileira de Zootecnia (Online) |
Download full: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001000010 |
Summary: | An experiment was conducted to define a protocol to determine metabolizable nutrient and energy values of diets. The metabolizability (M) was calculated of the dry matter (DM); crude protein (CP); gross energy (GE) and AMEn of a single diet. Eighty-one 21-day old (d) male birds were used. The tested methodologies were: Cr2O3 (0.5%) as an indicator (partial collection) or Fe2O3 (1%) as a marker; fasting (0, 4, 6 and 8 h) prior to excreta collection and at the end of the feeding period on the last day of collection (total collection). The excreta collection periods were also tested (3 and 5 days). Twenty 31-day old male broilers from the same group of birds were used to assess the effect of fasting on digestive organ weight. At the end of fasting the digestive organs were removed and weighed. Metabolism coefficients and energy were not different between 3 and 5 days of total collection. CPM was lower for marker utilization and 3 days excreta collection compared to the total collection. Eight hours fasting resulted in significantly lower CPM compared to the other periods or the no fasting. With the methodology of partial collection with 5 days of collection, the lowest values were observed for all the responses, compared to the 3 day collection period. The use of the total collection methodology produced the highest DMM and CPM compared to partial collection. No influence of fasting was observed on the digestive organ sizes, indicating that until 8 hours of fasting no changes were observed in either relative or absolute organ weight. However, the relative jejunum weight of birds submitted to 4 hours fasting was higher than that of birds under no fasting. Total collection, during a 3 day period, without fasting and marker use, is the best methodology for ingredient and feed evaluation of growing birds. |
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Study of methodological variations in apparent nutrient metabolism determination in broiler chickenschromic oxideexcreta collectionfastingferric oxidemetabolizable energy organ sizeAn experiment was conducted to define a protocol to determine metabolizable nutrient and energy values of diets. The metabolizability (M) was calculated of the dry matter (DM); crude protein (CP); gross energy (GE) and AMEn of a single diet. Eighty-one 21-day old (d) male birds were used. The tested methodologies were: Cr2O3 (0.5%) as an indicator (partial collection) or Fe2O3 (1%) as a marker; fasting (0, 4, 6 and 8 h) prior to excreta collection and at the end of the feeding period on the last day of collection (total collection). The excreta collection periods were also tested (3 and 5 days). Twenty 31-day old male broilers from the same group of birds were used to assess the effect of fasting on digestive organ weight. At the end of fasting the digestive organs were removed and weighed. Metabolism coefficients and energy were not different between 3 and 5 days of total collection. CPM was lower for marker utilization and 3 days excreta collection compared to the total collection. Eight hours fasting resulted in significantly lower CPM compared to the other periods or the no fasting. With the methodology of partial collection with 5 days of collection, the lowest values were observed for all the responses, compared to the 3 day collection period. The use of the total collection methodology produced the highest DMM and CPM compared to partial collection. No influence of fasting was observed on the digestive organ sizes, indicating that until 8 hours of fasting no changes were observed in either relative or absolute organ weight. However, the relative jejunum weight of birds submitted to 4 hours fasting was higher than that of birds under no fasting. Total collection, during a 3 day period, without fasting and marker use, is the best methodology for ingredient and feed evaluation of growing birds.Sociedade Brasileira de Zootecnia2009-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001000010Revista Brasileira de Zootecnia v.38 n.10 2009reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982009001000010info:eu-repo/semantics/openAccessCortés,María Esperanza MayorgaRibeiro,Andréa Machado LealGianfelici,Mário FedericoKessler,Alexandre de MelloMoraes,Mariana Lemos deeng2009-11-27T00:00:00Zoai:scielo:S1516-35982009001000010Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2009-11-27T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Study of methodological variations in apparent nutrient metabolism determination in broiler chickens |
title |
Study of methodological variations in apparent nutrient metabolism determination in broiler chickens |
spellingShingle |
Study of methodological variations in apparent nutrient metabolism determination in broiler chickens Cortés,María Esperanza Mayorga chromic oxide excreta collection fasting ferric oxide metabolizable energy organ size |
title_short |
Study of methodological variations in apparent nutrient metabolism determination in broiler chickens |
title_full |
Study of methodological variations in apparent nutrient metabolism determination in broiler chickens |
title_fullStr |
Study of methodological variations in apparent nutrient metabolism determination in broiler chickens |
title_full_unstemmed |
Study of methodological variations in apparent nutrient metabolism determination in broiler chickens |
title_sort |
Study of methodological variations in apparent nutrient metabolism determination in broiler chickens |
author |
Cortés,María Esperanza Mayorga |
author_facet |
Cortés,María Esperanza Mayorga Ribeiro,Andréa Machado Leal Gianfelici,Mário Federico Kessler,Alexandre de Mello Moraes,Mariana Lemos de |
author_role |
author |
author2 |
Ribeiro,Andréa Machado Leal Gianfelici,Mário Federico Kessler,Alexandre de Mello Moraes,Mariana Lemos de |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Cortés,María Esperanza Mayorga Ribeiro,Andréa Machado Leal Gianfelici,Mário Federico Kessler,Alexandre de Mello Moraes,Mariana Lemos de |
dc.subject.por.fl_str_mv |
chromic oxide excreta collection fasting ferric oxide metabolizable energy organ size |
topic |
chromic oxide excreta collection fasting ferric oxide metabolizable energy organ size |
description |
An experiment was conducted to define a protocol to determine metabolizable nutrient and energy values of diets. The metabolizability (M) was calculated of the dry matter (DM); crude protein (CP); gross energy (GE) and AMEn of a single diet. Eighty-one 21-day old (d) male birds were used. The tested methodologies were: Cr2O3 (0.5%) as an indicator (partial collection) or Fe2O3 (1%) as a marker; fasting (0, 4, 6 and 8 h) prior to excreta collection and at the end of the feeding period on the last day of collection (total collection). The excreta collection periods were also tested (3 and 5 days). Twenty 31-day old male broilers from the same group of birds were used to assess the effect of fasting on digestive organ weight. At the end of fasting the digestive organs were removed and weighed. Metabolism coefficients and energy were not different between 3 and 5 days of total collection. CPM was lower for marker utilization and 3 days excreta collection compared to the total collection. Eight hours fasting resulted in significantly lower CPM compared to the other periods or the no fasting. With the methodology of partial collection with 5 days of collection, the lowest values were observed for all the responses, compared to the 3 day collection period. The use of the total collection methodology produced the highest DMM and CPM compared to partial collection. No influence of fasting was observed on the digestive organ sizes, indicating that until 8 hours of fasting no changes were observed in either relative or absolute organ weight. However, the relative jejunum weight of birds submitted to 4 hours fasting was higher than that of birds under no fasting. Total collection, during a 3 day period, without fasting and marker use, is the best methodology for ingredient and feed evaluation of growing birds. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001000010 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001000010 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982009001000010 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zootecnia v.38 n.10 2009 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
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1750318144768966656 |