I-Urea, inhlanganisela ekhona egazini, emchameni nasebisini, iyindlela eyinhloko yokukhipha initrogen ezilwaneni ezincelisayo.Ukubona izinga le-urea ezinkomeni zobisi kusiza ososayensi kanye nabalimi baqonde ukuthi i-nitrogen ekudleni isetshenziswa kanjani ngempumelelo ezinkomeni zobisi.Kubalulekile kubalimi mayelana nezindleko zokudla, imiphumela yokuphila kwezinkomo zobisi (njengokusebenza kokuzala), kanye nomthelela wokukhishwa kwendle endaweni ezungezile.Ukubaluleka kwezomnotho kwe-nitrogen emqubeni wezinkomo.Ngakho-ke, ukunemba kokutholwa kwamazinga e-urea ezinkomeni zobisi kubalulekile.Kusukela ngeminyaka yawo-1990s, ukutholwa kwe-middle-infrared ye-milk urea nitrogen (MUN) kube yindlela ephumelela kakhulu futhi engangeneleli kakhulu esetshenziswa ukukala i-nitrogen ngobuningi bezinkomo zobisi.Esihlokweni sakamuva esishicilelwe ku-Journal of Dairy Science, abacwaningi base-Cornell University babike ngokusungulwa kwesethi enamandla yamasampula ereferensi yokulinganisa kwe-MUN ukuthuthukisa ukunemba kwezilinganiso ze-MUN.
“Lapho isethi yalawa masampula isetshenziswa kumshini wokuhlaziya ubisi, imininingwane ingasetshenziswa ukuthola amaphutha athile kwikhwalithi yokubikezela ye-MUN, futhi umsebenzisi wethuluzi noma umkhiqizi wokuhlaziya ubisi angase alungise lezi zinkinga,” kuchaza umdala. umbhali uDavid.UDkt. M. Barbano, Isikhungo Sokucwaninga Ngobisi saseNyakatho-mpumalanga, uMnyango Wesayensi Yokudla, i-Cornell University, i-Ithaca, eNew York, e-USA.Ulwazi olunembile futhi olufika ngesikhathi lwe-MUN “lubaluleke kakhulu ekondleni umhlambi wobisi nokuphathwa kokuzalanisa,” kwengeza uBarbano.
Uma kubhekwa ukwanda kokuhlolwa komhlaba wonke komthelela wemvelo wezolimo ezinkulu kanye nezinselelo zezomnotho abalimi ababhekana nazo, isidingo sokuqonda ngokunembile ukusetshenziswa kwe-nitrogen embonini yobisi kungenzeka ukuthi asikaze sibe esiphuthumayo.Lokhu kuthuthukiswa kokuhlolwa kokwakheka kobisi kuphawula inqubekelaphambili eyengeziwe ekufezeni izindlela ezinempilo nezisimeme kakhudlwana zezolimo nokudla, okuzozuzisa abakhiqizi kanye nabathengi.Bheka uPortnoy M et al.I-infrared milk analyzer: ubisi lwe-urea nitrogen calibration.J. Isayensi Yezobisi.Ephreli 1, 2021, emaphephandabeni.doi: 10.3168/jds.2020-18772 Lesi sihloko senziwa kabusha kusukela ezintweni ezilandelayo.Qaphela: Okubalulekile kungenzeka kuhlelwe ubude nokuqukethwe.Ukuze uthole ulwazi olwengeziwe, sicela uthinte umthombo okhonjiwe.
Isikhathi sokuthumela: Jul-05-2021