beta-Mannanase ameliorates viscosity-associated depression of growth in broiler chickens fed guar germ and hull fractions
High concentrations of guar meal in broiler chicken diets reduce body weight and feed efficiency. The increased intestinal viscosity that is responsible for reduced measures of performance results from residual guar gum present in guar meal. Two experiments were designed to study the effects of 2 gu...
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Veröffentlicht in: | Poultry science 2003-12, Vol.82 (12), p.1925-1931 |
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container_title | Poultry science |
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creator | Lee, J T Bailey, C A Cartwright, A L |
description | High concentrations of guar meal in broiler chicken diets reduce body weight and feed efficiency. The increased intestinal viscosity that is responsible for reduced measures of performance results from residual guar gum present in guar meal. Two experiments were designed to study the effects of 2 guar meal fractions at 3 different concentrations, germ (0, 5.0, and 7.5%) and hull (0, 2.5, and 5.0%), and the effectiveness of a beta-mannanase at three levels (0, 1x, and 4x; 1x = 1.09 x 10(5) units/ kg) on broiler growth and feed conversion. Growth and performance were measured as a function of intestinal viscosity. Addition of the germ fraction to rations did not reduce body weight, although feed conversion ratio was increased at 7.5% of the diet. Intestinal viscosity also increased significantly at this level. Enzyme addition significantly reduced intestinal viscosity. Due to an interaction that was present between hull and enzyme concentration, each treatment was compared separately. Inclusion of the hull fraction significantly reduced body weight at both levels of inclusion and increased feed conversion ratio at 5% inclusion. Addition of the enzyme significantly increased body weight and reduced feed conversion ratio in diets containing guar hull fractions. Supplementation of beta-mannanase to feeds containing either fraction of guar meal reduced intestinal viscosity and alleviated the deleterious effects associated with guar meal feeding. |
doi_str_mv | 10.1093/ps/82.12.1925 |
format | Article |
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The increased intestinal viscosity that is responsible for reduced measures of performance results from residual guar gum present in guar meal. Two experiments were designed to study the effects of 2 guar meal fractions at 3 different concentrations, germ (0, 5.0, and 7.5%) and hull (0, 2.5, and 5.0%), and the effectiveness of a beta-mannanase at three levels (0, 1x, and 4x; 1x = 1.09 x 10(5) units/ kg) on broiler growth and feed conversion. Growth and performance were measured as a function of intestinal viscosity. Addition of the germ fraction to rations did not reduce body weight, although feed conversion ratio was increased at 7.5% of the diet. Intestinal viscosity also increased significantly at this level. Enzyme addition significantly reduced intestinal viscosity. Due to an interaction that was present between hull and enzyme concentration, each treatment was compared separately. Inclusion of the hull fraction significantly reduced body weight at both levels of inclusion and increased feed conversion ratio at 5% inclusion. Addition of the enzyme significantly increased body weight and reduced feed conversion ratio in diets containing guar hull fractions. Supplementation of beta-mannanase to feeds containing either fraction of guar meal reduced intestinal viscosity and alleviated the deleterious effects associated with guar meal feeding.</description><identifier>ISSN: 0032-5791</identifier><identifier>DOI: 10.1093/ps/82.12.1925</identifier><identifier>PMID: 14717550</identifier><language>eng</language><publisher>England</publisher><subject>Animal Nutritional Physiological Phenomena ; Animals ; beta-Mannosidase - administration & dosage ; Chickens - growth & development ; Cyamopsis ; Diet ; Intestines - physiology ; Plant Structures ; Viscosity</subject><ispartof>Poultry science, 2003-12, Vol.82 (12), p.1925-1931</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c328t-577cf3549137cbc75fb076d7343790abd46a887ab8179de73ce5568d4fcc046c3</citedby><cites>FETCH-LOGICAL-c328t-577cf3549137cbc75fb076d7343790abd46a887ab8179de73ce5568d4fcc046c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/14717550$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lee, J T</creatorcontrib><creatorcontrib>Bailey, C A</creatorcontrib><creatorcontrib>Cartwright, A L</creatorcontrib><title>beta-Mannanase ameliorates viscosity-associated depression of growth in broiler chickens fed guar germ and hull fractions</title><title>Poultry science</title><addtitle>Poult Sci</addtitle><description>High concentrations of guar meal in broiler chicken diets reduce body weight and feed efficiency. The increased intestinal viscosity that is responsible for reduced measures of performance results from residual guar gum present in guar meal. Two experiments were designed to study the effects of 2 guar meal fractions at 3 different concentrations, germ (0, 5.0, and 7.5%) and hull (0, 2.5, and 5.0%), and the effectiveness of a beta-mannanase at three levels (0, 1x, and 4x; 1x = 1.09 x 10(5) units/ kg) on broiler growth and feed conversion. Growth and performance were measured as a function of intestinal viscosity. Addition of the germ fraction to rations did not reduce body weight, although feed conversion ratio was increased at 7.5% of the diet. Intestinal viscosity also increased significantly at this level. Enzyme addition significantly reduced intestinal viscosity. Due to an interaction that was present between hull and enzyme concentration, each treatment was compared separately. Inclusion of the hull fraction significantly reduced body weight at both levels of inclusion and increased feed conversion ratio at 5% inclusion. Addition of the enzyme significantly increased body weight and reduced feed conversion ratio in diets containing guar hull fractions. Supplementation of beta-mannanase to feeds containing either fraction of guar meal reduced intestinal viscosity and alleviated the deleterious effects associated with guar meal feeding.</description><subject>Animal Nutritional Physiological Phenomena</subject><subject>Animals</subject><subject>beta-Mannosidase - administration & dosage</subject><subject>Chickens - growth & development</subject><subject>Cyamopsis</subject><subject>Diet</subject><subject>Intestines - physiology</subject><subject>Plant Structures</subject><subject>Viscosity</subject><issn>0032-5791</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkM1LxDAQxXNQ3HX16FVy8lY3aZqmPYr4BYoXPYc0ne5G26RmWmX_eyO7IDwYGH7zmPcIueDsmrNarEdcV_k1T6pzeUSWjIk8k6rmC3KK-MFYzstSnZAFLxRXUrIl2TUwmezFeG-8QaBmgN6FaCZA-u3QBnTTLjOIwbq0bGkLYwREFzwNHd3E8DNtqfO0icH1EKndOvsJHmmX4M1sIt1AHKjxLd3OfU-7aOyUrvGMHHemRzg_zBV5v797u33Mnl8fnm5vnjMr8mpK7yvbCVnUXCjbWCW7hqmyVaIQqmamaYvSVJUyTcVV3YISFqQsq7borGVFacWKXO19xxi-ZsBJDykX9L3xEGbUiksmeF0nMNuDNgbECJ0eoxtM3GnO9F-_ekRd5ZonpX4Tf3kwnpsB2n_6UK74BXmOes8</recordid><startdate>20031201</startdate><enddate>20031201</enddate><creator>Lee, J T</creator><creator>Bailey, C A</creator><creator>Cartwright, A L</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20031201</creationdate><title>beta-Mannanase ameliorates viscosity-associated depression of growth in broiler chickens fed guar germ and hull fractions</title><author>Lee, J T ; Bailey, C A ; Cartwright, A L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c328t-577cf3549137cbc75fb076d7343790abd46a887ab8179de73ce5568d4fcc046c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Animal Nutritional Physiological Phenomena</topic><topic>Animals</topic><topic>beta-Mannosidase - administration & dosage</topic><topic>Chickens - growth & development</topic><topic>Cyamopsis</topic><topic>Diet</topic><topic>Intestines - physiology</topic><topic>Plant Structures</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, J T</creatorcontrib><creatorcontrib>Bailey, C A</creatorcontrib><creatorcontrib>Cartwright, A L</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Poultry science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, J T</au><au>Bailey, C A</au><au>Cartwright, A L</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>beta-Mannanase ameliorates viscosity-associated depression of growth in broiler chickens fed guar germ and hull fractions</atitle><jtitle>Poultry science</jtitle><addtitle>Poult Sci</addtitle><date>2003-12-01</date><risdate>2003</risdate><volume>82</volume><issue>12</issue><spage>1925</spage><epage>1931</epage><pages>1925-1931</pages><issn>0032-5791</issn><abstract>High concentrations of guar meal in broiler chicken diets reduce body weight and feed efficiency. The increased intestinal viscosity that is responsible for reduced measures of performance results from residual guar gum present in guar meal. Two experiments were designed to study the effects of 2 guar meal fractions at 3 different concentrations, germ (0, 5.0, and 7.5%) and hull (0, 2.5, and 5.0%), and the effectiveness of a beta-mannanase at three levels (0, 1x, and 4x; 1x = 1.09 x 10(5) units/ kg) on broiler growth and feed conversion. Growth and performance were measured as a function of intestinal viscosity. Addition of the germ fraction to rations did not reduce body weight, although feed conversion ratio was increased at 7.5% of the diet. Intestinal viscosity also increased significantly at this level. Enzyme addition significantly reduced intestinal viscosity. Due to an interaction that was present between hull and enzyme concentration, each treatment was compared separately. Inclusion of the hull fraction significantly reduced body weight at both levels of inclusion and increased feed conversion ratio at 5% inclusion. Addition of the enzyme significantly increased body weight and reduced feed conversion ratio in diets containing guar hull fractions. Supplementation of beta-mannanase to feeds containing either fraction of guar meal reduced intestinal viscosity and alleviated the deleterious effects associated with guar meal feeding.</abstract><cop>England</cop><pmid>14717550</pmid><doi>10.1093/ps/82.12.1925</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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language | eng |
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source | MEDLINE; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
subjects | Animal Nutritional Physiological Phenomena Animals beta-Mannosidase - administration & dosage Chickens - growth & development Cyamopsis Diet Intestines - physiology Plant Structures Viscosity |
title | beta-Mannanase ameliorates viscosity-associated depression of growth in broiler chickens fed guar germ and hull fractions |
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