Gonçalves, L. C.

Mauricio, Rogerio M.

Moreira, G. R.

Rodriguz, N. M.

Saliba, E. O. S.

Sousa, L. F.

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings 21st International Grassland Congress / 8th International Rangeland Congress Intake and Nutritional Value of Brachiaria brizantha cv. Marandu in a Silvopastoral System Rogerio M. Mauricio Pontifícia Universidade Católica de Minas Gerais, Brazil N. M. Rodriguz Universidade Federal de Minas Gerais, Brazil L. F. Sousa Universidade Federal de Minas Gerais, Brazil E. O. S. Saliba Universidade Federal de Minas Gerais, Brazil L. C. Gonçalves Universidade Federal de Minas Gerais, Brazil 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/21/10-1/8 The 21st International Grassland Congress / 8th 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 Rogerio M. Mauricio, N. M. Rodriguz, L. F. Sousa, E. O. S. Saliba, L. C. Gonçalves, and G. R. Moreira This event is available at UKnowledge: https://uknowledge.uky.edu/igc/21/10-1/8 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　 瞯 ]195　 瞯Grasslands/Rangelands Production Systems——— Integration of Crops , Forage and Forest SystemsIntake and nutritional value of Brachiaria brizantha cv . Marandu in a Silvopastoral systemR .M . Mauricio1 , N .M . Rodriguz 2 , L .F . Sousa2 , E .O .S . Saliba2 , L .C . Gon毕alves2 , G .R . Moreira21 FUNED , Funda毕本o Ezequiel Dias and PUC‐MG , Ponti fícia Universidade Católica de Minas Gerais ,2 EV‐UFMG , Escolade Veterinária da Universidade Federal de M inas Gerais , B raz il . E‐mail : rogerio .mauricio＠ f uned .mg .gov .brKey words : intake ,silvopastoral system ,shaded ,treeIntroduction In Brazil , the Savannah bioma has been cut down and substituted for either pastures or crops . The Silvopastoralsystems are agroecologycal options which are based on economic , social and environmental principles that could improvesustainable animal production practices . In this context , the study of forages that could be used in low light conditions‐underthe trees‐is needed . Graminaceous forages of the Braquiaria genus are largely used in T ropical areas and have potential for useunder shade conditions . Therefore , the objective of this study was to evaluate the potential use of Brachiaria briz antha by inv ivo trial in a silvopatoral system ( SPS) composed by trees of the Zeyheria genus .Materials and methods The SPS was composed by Brachiaria briz antha cv . Marandu ( forage) and Zeyheria tuberculosa ( tree) ,and was formed in the Brazilian Savannah , latosoil , １９° , ３５′ , ３６″ South ４３° , ５１′ , ５６″ West ; ７４７m , Minas Gerais State ,Brazil . The treatments were : T１ ＝ Brachiaria briz antha cv . Marandu under Z . tuberculosa trees and T２ ＝ Brachiariabriz antha cv . Marandu under the influence of the sun only ( no trees) . The experiment was installed in a completely randomizeddesign using １８ sheep , being nine per each treatment , under continuous stocking and fixed daily ３％ body weight allowance ofdry matter as green leaf from only pasture forage . The animals also received pure water and a mixture of mineral and salt adlibitum . For each animal , one pill of LIPE 眘 （internal marker) (２ ) was introduced into the mouth during ２ days for adaptationbefore the ５ days of faeces collection at intervals of LIPE 眘 administration , ３ times . On the fif th day , forage was collected forin v itro dry matter digestibility ( IVDMD ) and bromatological analysis ( DM , dry matter ; CP , crude protein ; Ash ; NDF ,neutral detergent fibre ; ADF , acid detergent fibre ) . In addition , the climatic parameters were also measured ( PAR ,photosynthetic active radiation ; GR , global radiation ; MaAT , maximum and Temperature ; MiAT , minimum air temperature ;DBT , dry and bulb temperature ; WBT , wet bulb temperature ; BBT , black bulb temperature ; RH , relative humidity) .Results and discussion Although there was greater ADFconcentration in the forage in the shaded areas ; T１ ( Table ２) ,the intake was higher ( Table ３ ) , probably due to higher CPlevel and better climatic conditions promoted by the shade . Inaddition , the time spent on feeding in T１ was higher duringthe day and water consumption was lower compared to T２ .Table 1 Climatic p arameters o f the ex perimental area ( PA R ,photosynthetic active radiation ; GR , global radiation ,MaA T , max imum and MiA T , minimum air temperature ,DBT , dry and ; WBT , BBT , black bulb temperature , wetbulb temperature ; RH , relative humidity .)Climatic parameters T１ @T２ LPAR( μmol de fóton .s‐１ .m‐２ ) ７００ #.３ １３５４ D.９GR (Watts . m‐２ ) ３９６ #.４ ７２８ /.７MaAT‐MiAT ( ℃ ) ２８ �.２‐２０ .２ ３３ 换.５‐２０ .５DBT‐WBT‐BBT ( ℃ ) ２４ P.７‐２１ .６‐２７ .５ ２５ \.５‐２１ .８‐３１ .６RH ( ％ ) ７５  .６ ７１ .３Table 2 Dry matter p roduction ( DM ) , crude p rotein (CP) ,A sh ( ash) , neutral ( NDF) and acid (A DF) detergent f ibre( NDF) o f Brachiaria brizantha cv . Marandu ( f orage) underZ . tuberculosa tree ( T1) and control ; no tree ( T2)TreatmentsParametersDM( ton/ ha) １ >CP( kg / ha) １ 拻DM( ％ )CP 倡( ％ )NDF 倡( ％ )ADF 倡( ％ )Ash 倡( ％ )T１ Z１ 槝.２ １１８  .７ ２２ C.１ ９ G.７ ６７ n.７ ３４ 剟.２ ８ i.１T２ Z１ 槝.７ １１７  .５ ２６ C.６ ６ G.９ ６８ n.０ ３２ 剟.１ ７ i.９CV ( ％ ) ２０ *.２ ２４  .０ ６ 1.４ ９ G.０ １ \.９ ４ r.５ ６ i.５１‐Mean from each harvest , CV Coefficient of variation , 倡 ％ in DMTable 3 Herbage intake o f sheep on Brachiaria brizantha cv .Marandu ( f orage ) under Z . tuberculosa tree ( T1 ) andcontrol ; no tree ( T2) .T reatments Intake( ％ body weight) Intake( g / kg ０ 父.７５ )T１ 构３ w.８９ ８８ ,.２８T２ 构３ w.５２ ７９ ,.９２CV ( ％ ) ６ w.８７ ７  .０１CV‐Coefficient of variationConclusions A lthough the e f f ect o f the shade p romoted by Z . tuberculosa tree in the SPS reduced the DM production of B .briz antha cv . Marandu , the results demonstrated higher CP levels and also increased intake of the sheep maintained in pasture .ReferencesCARVALHO , M . M . ; SILVA , J . L . O . ; CAMPOS JUNIOR , B . A . (１９９７) Produ毕本o de matéria seca e composi毕本o mineralda forragem de seis gramíneas tropicais estabelecidas em um sub‐bosque de angico vermelho . Rev ista Brasileira deZootecnia , ２６ , p . ２１３‐２１８ .

Intake and Nutritional Value of \u3ci\u3eBrachiaria brizantha\u3c/i\u3e cv. Marandu in a Silvopastoral System

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Intake and Nutritional Value of \u3ci\u3eBrachiaria brizantha\u3c/i\u3e cv. Marandu in a Silvopastoral System

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