Nutrient content, in vitro degradation and gas production potential of grasses and forage trees and shrubs found in the high tropics of Nari?o

摘要

Bythetechniqueofinvitro,gasproductionwasevaluatedin12foragespeciesLoliummultiflorum,Medicagosativa,Phalarisarundinacea,Otholobiummunyense,Baccharislatifolia,Abutilonstriatum,Acaciadecurrens,Raphanussativus,Sambucusnigra,Ambrosiaarborescens,BetavulgarisinfruitandfoliageaswellasinamixtureofLoliumsp.,Dactylisglomerata,Holcuslannatus,Raphanussativus,Rumexsp.,andTaraxacumofficinales.Theseweredriedat65°Candgroundthrougha1mmmesh,theneachsamplewasinoculatedwithrumenfluidandfluidfromfreshbovinefeces.Thepressureandvolumegeneratedinsideofthebottlesweremeasuredusingamanometricsystemin14differenttimes.Amongthevariablesmeasuredwerethetotalgasproduction,methaneandvolatilefattyacids.Increasedproductionofgas,at96hourswasobtainedinthefruitofBetavulgariswith151mland141mlwithfecalnbsp;andinoculumrumeninoculum,respectively,andalsoincreasedproductionofmethane.TheresultsobtainedallowedtoidentifythefruitofBetavulgarisashavinghighpotentialformethaneproductionfollowingitsinclusioninthedietofcattle.ItisatuberoftheChenopodáceaefamily,characterizedbyarichcontentofsimplesugarsandlowprotein.ForagespeciessuchasSambucusnigra,Acaciadecurrens,OtholobiummunyenseandAmbrosiaarborescens,appeartohavenbsp;highpotentialinreducingmethaneemissionsbythepresenceinthestructureofsecondarymetabolitessuchastanninsandanappropriatebalancebetweenfibercomponentsandprotein.nbsp;