Aguirre, P. A.

Martens, Siriwan

Montoya, C. A.

Muñoz, L. S.

Peters, M.

Sarria, P.

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings XXI International Grassland Congress / VIII International Rangeland Congress Nutritional Characterisation of Vigna unguiculata as Alternative Protein Source for Monogastric Animals L. S. Muñoz Universidad Nacional de Colombia, Colombia P. Sarria Universidad Nacional de Colombia, Colombia Siriwan Martens Centro Internacional de Agricultura Tropical, Colombia M. Peters Centro Internacional de Agricultura Tropical, Colombia P. A. Aguirre Universidad Nacional de Colombia, Colombia See next page for additional authors Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/15-2/31 The XXI International Grassland Congress / VIII International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. Presenter Information L. S. Muñoz, P. Sarria, Siriwan Martens, M. Peters, P. A. Aguirre, and C. A. Montoya This event is available at UKnowledge: https://uknowledge.uky.edu/igc/21/15-2/31 瞯 728　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands Production Systems ——— Forage Quality ,Conservation and UtilizationNutritional characterisation of Vigna unguiculata as alternative protein source for monogastricanimalsL .S . Mu鼻oz 1 , P . Sarria1 , S . Martens2 , M . Peters2 , P .A . Aguir re1 and CA . Montoya11 Universidad Nacional de Colombia , Palmira , Colombia , E‐mail : lsmunoza ＠ palmira . unal . edu . co , 2 CIA T , Cali ,ColombiaKeywords : Vigna unguiculata ,rats ,monogastric animals ,digestibilityIntroduction Vigna unguiculata is a fast growing annual tropical legume , which can grow even on acid soils of low fertility , hasa vigorous seed production and is high in protein , starch and mineral content . That is why it was evaluated as alternative sourceof plant protein for monogastric animals in Colombia to complement or replace soy ( Granito , ２００４ ) .Materials and methods In a feeding trial with rats , the protein of the control diet was substituted with ３３ , ６７ and １００ ％ bycrude cowpea grain . The apparent and true fecal and ileal coefficients of the digestibility of the dry matter ( DM) , nitrogen ( N)and energy were determined in rats using chrome oxide for the true ileal digestibility ( Furukawa y Tsukahara １９６６ ) . The gradeof hydrolysis of the proteins was investigated by an in‐vitro method with ophthaldialdehyde ( OPA) ( Church et al . , １９８３ ) .Results There were significant differences ( P ≤ ０ .０１ ) in the fecal and ileal N‐digestibility between rations , i .e . the higher theinclusion of cowpea in the diet , the higher the endogenous N‐flow ( Table １ and ２ ) . The values for the digestibility in‐vivo andin‐vitro show a high correlation ( Table ３ ) , which means that the in‐vitro method allows a good prediction of digestibility oflegume proteins .Table 1 A p parent and true f ecal N‐digestibility ( AND , TND ) anddigestibility o f DM and organic matter(OM) .Inclusion level of cowpea ％Control ３３ ６７ １００ PDM ８３b ８５a ８６a ８６a ０ .００１OM ８７b ８８a ８８a ８８ab ０ .０４２AND ８８a ７９b ６８c ５６d ０ .００１TND ９６a ８９b ７６c ６５d ０ .００１Different letters in the row i . e . figures differsignificantly P ≤ ０ .０５Table 2 A p parent and true ilealdigestibility o f DM , N ( AND , TND) andendogenous N‐ f lux (ENF) .Inclusion level of cowpea ％Control ３３ ６７ １００ PDM ８５a ８３a ７８a ７７b ０ .００８AND ７８a ５７b ３８c ３９c ０ .００１TND ８４a ６３b ４４c ４４c ０ .００１ENF ３ .９c ６ .８b １１ .１a １１ .２a ０ .００１Table 3 Comparison between the true ilealN‐digestibility in vivo and in vitro o f thedi f f erent diets .Digestibility ％Diets In‐vitro In‐vivo１Control ８９ .１ ８３ .５Cowpea ３３ ％ ６５ .０ ６２ .８Cowpea ６７ ％ ４９ .７ ４３ .８Cowpea １００ ％ ４２ .７ ４４ .０R２ ＝ ０ .９７８１ True ileal digestibilityConclusions We assume that the low fecal and ileal N‐digestibility in the diets where the soy protein was replaced with ６７ and１００ ％ cowpea grain can be explained by a presence of anti‐nutritional factors which stimulate more secretion or inhibithydrolysis , reabsorption and especially increase endogenous losses . Nevertheless we conclude that cowpea can be utilized as analternative protein for monogastric animals .ReferencesChurch F , Swaisgood H , Porter DH , Catignani G . １９８３ . Spectrophotometric assay using o‐Phthaldialdehyde for determinationof proteolysis in milk and isolated milk proteins . Journal o f Dairy Science 66 , １２１９‐１２２７ .Furukawa A , Tsukahara H . １９６６ . On the acid digestion method for the determination of chromic oxide as an index substancein the study of digestibility of fish fed . Bulletin o f the Japanese Society o f Scienti f ic f isheries ３２ , ５０２‐５０６ .Granito M , Guerra M , Torres AY , Guinand J , ２００４ . Efecto del procesamiento sobre las propiedades funcionales de Vignainensis . Interciencia ２９ (９ ) , ５２１‐５２６ .

Nutritional Characterisation of \u3ci\u3eVigna unguiculata\u3c/i\u3e as Alternative Protein Source for Monogastric Animals

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Nutritional Characterisation of \u3ci\u3eVigna unguiculata\u3c/i\u3e as Alternative Protein Source for Monogastric Animals

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