Han, Liying

Tao, Lian

Yu, Zhu

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings XXI International Grassland Congress / VIII International Rangeland Congress Study on Making Psathyrostachys juncea Silage Liying Han China Agricultural University, China Zhu Yu China Agricultural University, China Lian Tao China Agricultural University, China 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/21/15-3/5 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. 瞯 752　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands Production Systems ——— Forage Quality ,Conservation and UtilizationStudy on making Psathyrostachys juncea silageH AN Li‐ying , YU Zhu , T AO LianInstitute o f Grassland Science , China Agricultural University , Bei j ing 100193 . E‐mail :yuzhu3 ＠ sohu .comKey word : Psathyrostachys j uncea ,silage ,additives ,fermentation quality ,chemical compositionIntroduction With high protein content and good palatability , Psathyrostachys juncea can be made into hay with high quality .But in the process of drying , many nutrients may be lost . In order to reducing the loss of nutrients and maintain its feedingvalue , it can be made into silage ( Alexander N Hristov , １９９８ ) . However , information on its silage quality is not available .The objective of this research was to determine the quality of ensiled Psathyrostachys j uncea .Materials and methods The primary growth of Psathyrostachys j uncea was harvested at the late heading stage . This materialwas chopped into about ２cm in length and ensiled in polyethylene bags with or without different additives , and sealed with avacuum packaging machine . Formic acid and molasses can decrease the pH value and the content of ammonia nitrogen of silage .In this text , formic acid was added at ２g/ kg , ４g/ kg and ８g/ kg , respectively . Molasses was added at １０g / kg , ２０g / kg and ４０g/kg , respectively . Each treatment was made in three bags .All treatments were stored for ４５ d at room temperature , thensampled for the analysis of fermentation quality and chemical composition .Results The addition of formic acid decreased ( p ＜ ０ .０５ ) pH value and ammonia nitrogen content ; increased WSC content , butdid not affect DM , CP , NDF contents . ADF content was decreased ( p ＜ ０ .０５ ) by adding ８g/ kg formic acid . The addition ofmolasses decreased ( p ＜ ０ .０５ ) pH value , ammonia nitrogen and ADF contents , but did not affect the DM , WSC , NDFcontents . Crude protein content was increased ( p ＜ ０ .０５ ) by adding ４０g/ kg molasses . The main results of fermentation qualityand chemical composition of Psathyrostachys juncea silage are shown in Table １ .Table1 The f ermentation quality and chemical composition o f Psathyrostachys juncea silages .Treatments pHLacticAcid Butyric‐Acid(DM ％ )AmmoniaNitrogen/TotalNitrogen( ％ )CP WS C NDF ADF(DM ％ )Control ４ .８２a ２ .７９ab ０ .２４ ８ .２９a １４ .３８b ４ .８８c ６７ .６４ ４９ .３１aF ＿ ２ ４ .５４bc １ .１１bc ０ .０８ ３ .４７d １４ .３６b ８ .５６b ６４ .６７ ４９ .１０aF ＿ ４ ４ .４５bc ０ .０７c ０ .０７ ２ .３７de １４ .４７b １２ .４８a ６３ .４９ ４５ .７６abF ＿ ８ ４ .４０c ０ .００d ０ .１７ １ .６６e １４ .６７b １３ .１９a ６２ .９２ ３８ .６２bcM ＿ １０ ４ .５７b ４ .５６a ０ .１０ ６ .９８b １５ .０８ab ３ .２２c ６６ .５３ ３９ .２３bcM ＿ ２０ ４ .２２d ４ .８５a ０ .２１ ４ .９８c １５ .４７ab ４ .０５c ６５ .２８ ３２ .９３cM ＿ ４０ ４ .４６bc ５ .４２a ０ .０２ ４ .８２c １５ .８４a ４ .９５bc ６４ .９７ ３２ .６４cF : formic acid , M : molasses ; CP : Crude Protein ; WSC : Water Soluble Carbohydrates ; NDF : Neutral Detergent Fiber ; ADF : Acid Detergent Fiber . The differentletters in the same column indicate significant differences at p ＜ ０ .０５ .Conclusion The addition of either formic acid or molasses can improve the fermentation quality and nutritional value ofPsathyrostachys j uncea silages .ReferenceAlexander N Hristov , １９９８ .Proteolysis and rumen degradability of protein in alfalfa preserved as silage , wilted silage or hay .Animal Feed Science and Technology , １７５‐１８１ .

Study on Making \u3ci\u3ePsathyrostachys juncea\u3c/i\u3e Silage

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=3707&amp;context=igc

Study on Making \u3ci\u3ePsathyrostachys juncea\u3c/i\u3e Silage

Abstract

Similar works

Full text

Available Versions

University of Kentucky