I-urease inhibitors ivimbela umsebenzi we-microbial urease ku-rumen yezinkomo nezimvu, ilawula ukuguqulwa kwamagciwane ku-rumen yezinkomo nezimvu, ikhulise ukuhlanganiswa kwamaprotheni amancane, futhi inciphise izinga lokubola kwe-rumen urea. Inomphumela ovimbelayo emsebenzini we-rumen urease, yehlisa ukubola kwe-urea, yehlisa izinga lokukhishwa kwe-ammonia, futhi ithuthukisa ukusetshenziswa{1}}kwe-nitrogen engeyona iphrotheni. Ama-urease inhibitors ajwayelekile i-acetohydroxamic acid (5%) kanye ne-yucca extract.
Izingxenye eziyinhloko zokukhishwa kwe-yucca: i-yucca saponin (i-steroid yemvelo i-sarsasaponin), i-yucca polysaccharides, ne-yucca polyphenols. Njengesivimbeli semvelo se-urease, singanciphisa i-ammonia ekhiqizwa ukubola ngokushesha kwe-urea futhi yehlise i-rumen liquid ammonia Igesi ikhiqizwa ukuthuthukisa ukusetshenziswa{1}}kweprotheni nitrogen.
Ngesikhathi esifanayo, ukukhishwa kwe-yucca kungathuthukisa umsebenzi wokuvubela kwe-rumen, kuvimbele i-rumen protozoa, futhi kunciphise ukukhishwa kwamagesi ayingozi (ammonia, methane) (Walance et al. 1993). Ukukhishwa kwe-Yucca kungase futhi kukhuthaze ukugayeka kokudla kanye nokumuncwa kwamaprotheni nezinye izakhi, futhi kukhuthaze ukukhula kwezilwane: I-Yucca saponin ingakhuphula ukungeneka kwamathumbu amancane, ikhuphule ukusebenza kahle kokuguqulwa kokuphakelayo, futhi inciphise isilinganiso sokudla (Li Guoxiang et al. 2008); vimbela i-E. coli, i-aerobic isiyonke Inani lamabhaktheriya liyancipha futhi inani lamabhaktheriya e-lactic acid liyakhula, okukhuthaza ukwanda kwamabhaktheriya anenzuzo (Shi Binlin 2014) futhi kuthuthukise impilo yamathumbu. Phakathi kwazo, i-yucca saponin ne-yucca polysaccharides ikhuthaza ngempumelelo ukuvutshelwa kwe-anaerobic microbial, ikhuthaza ukuhlanganiswa kwamaprotheni ebhaktheriya, ithuthukise izici zokuvutshelwa kwe-rumen, futhi yehlise inani le-protozoa ngo-63% (Peakstock et al. 1979). I-Yucca extract inomthelela ozinzile enanini le-PH loketshezi lwe-rumen, inyusa ukugcwala kwe-propionic acid, inciphisa ukugcwala kwe-acetic acid, kanye nokugxila kwe-NH3-N kuketshezi lwe-rumen futhi okukhiphayo kwe-methane kuyaqhubeka nokuncipha (Goodall et al{10}}). Ngakho-ke, esikhundleni se-monensin nemikhiqizo ekhuthaza ukukhula, ukukhishwa kwe-yucca nakho kuyisinqumo esihle.
