Ametaj, B. N.

Yang, W. Z.

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings XXI International Grassland Congress / VIII International Rangeland Congress Use of By‐Products Derived from Neem Tree (Azadirachta indica) in Livestock Production W. Z. Yang Agriculture and Agri‐Food Canada, Canada B. N. Ametaj University of Alberta, Canada 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/21/10-2/15 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. 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　 瞯 ]253　 瞯Grasslands/Rangelands Production Systems——— Integration of Crops , Forage and Forest SystemsUse of by‐products derived from Neem tree (Azadirachta indica) in livestock productionW .‐Z . Y ang1 and B . N . Ametaj 21 Research Centre , A griculture and A gri‐Food Canada , Lethbridge , A lberta , T1J 4B1 Canada , E‐mail : yangw ＠ agr .gc .ca , 2 Department o f A gricultural , Food and Nutritional Science , University o f A lberta , Edmonton , A lberta , T6G 2P5CanadaKey words :neem oil ,fermentation ,feedlot diet ,in vitro continuous cultureIntroduction Neem ( A z adirachta indica) has been accepted as a valuable resource because of its diverse utility . Various partsof neem tree have been used as traditional Ayurvedic medicine in India ( Brahmachari , ２００４ ) . Neem cake was reported tostimulate enzymes related to fibre degradation in which animals ??? ( Agrawal et al . , １９９１ ) . The objective of this study was toexamine the effects of neem oil supplementation in a feedlot finishing diet on in vitro ruminal fermentation and digestibility .Materials and methods A six‐unit dual effluent continuous culture system was used . Diets consisted of ８４％ barley grain , ９％barley silage and ７％ supplement ( what type of supplement ??) ( DM basis ) . Fermenters were provided ６０ g / d of diet DM intwo equal portions . The study was designed as a replicated ３ × ３ Latin squares with treatments : control ( ０ mg / l) , low ( ４００mg/ l) and high (８００ mg/ l) level of neem oil .Results and discussion Total VFA concentration and proportion of acetate tended to reduce with increasing supplementation ofneem oil ( Table １) . Ruminal digestibilities of OM , NDF and starch as well as degradability of N decreased in relation to theamount of neem oil added . Supplementing ４００ mg /L of neem oil increased microbial N synthesis by ２５％ with no furtherincrease with the addition of ８００ mg/ L of neem oil .Table 1 E f f ect o f neem oil on volatile f atty acid (V FA ) concentration and digestibility .T reatment , mg / L Effects０ 儋４００ K８００ 摀SE Linear QuadraticTotal VFA , mM ８４ 排.３ ８３  .６ ７８ V.５ ３ ].０ ０ H.１０ NSAcetate , ％ of total ４５ 排.１ ４３  .７ ４０ V.０ ２ ].２ ０ H.０９ NSPropionate , ％ of total ４３ 排.６ ４４  .２ ４６ V.６ ３ ].２ NS NSDigestibility , ％　 OM ( true) ７９ 排.２ ７５  .８ ７０ V.２ １ ].４ ０ H.０１ NS　 NDF ６５ 排.０ ６３  .９ ５５ V.７ １ ].７ ０ H.０１ NS　 Starch ８９ 排.０ ８５  .２ ８２ V.２ １ ].４ ０ H.０１ NS　 N , ( true) ７８ 排.０ ７７  .５ ６６ V.９ ２ ].５ ０ H.０１ ０ .１０Microbial N , g / day ０ 湝.９３ １ 滗.１５ １ -.０５ ０ I.０６ ０ H.０９ ０  .０２Conclusions The reduction in the ruminal digestibility of OM due to neem oil supplementation is attributed to depression ofdigestibilities of fibre and starch as well as to the decrease in the degradability of CP . It suggests that supplementation withneem oil inhibited ruminal microbial activity . A linear reduction in ruminal digestibility of starch with supplementation of neemoil could be beneficial in preventing development of acidosis in feedlot cattle under high‐grain diets .ReferencesAgrawal , N . , Kewalramani , N . , Kamra , D .N . , Agrawal , D .K . , Nath , K . , １９９１ . Effects of water ex tracts of neem( A z adirachta indica) cake on the activity of hydrolytic enzymes of mixed rumen bacteria from buffalo . Journal o f theScience o f Food and A griculture ５７ , １４７‐１５０ .Brahmachari , G . , ２００４ . Neem‐An omnipotent plant : A retrospection . ChemBioChem . ５ , ４０８‐４２１ .

Use of By‐Products Derived from Neem Tree (\u3ci\u3eAzadirachta indica\u3c/i\u3e) in Livestock Production

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Use of By‐Products Derived from Neem Tree (\u3ci\u3eAzadirachta indica\u3c/i\u3e) in Livestock Production

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