Wotsogolera wopambana wa Oscar James Cameron, yemwe posachedwapa adapita ku vegan pazifukwa zamakhalidwe abwino, wakhala akudzudzula anthu oteteza zachilengedwe omwe akupitiriza kudya nyama.
Mu kanema wa Facebook yemwe adasindikizidwa mu Okutobala 2012, Cameron akulimbikitsa okonda zachilengedwe odya nyama kuti asinthe zakudya zotengera zomera ngati ali ndi chidwi chofuna kupulumutsa dziko lapansi.
“Simungakhale wosamala zachilengedwe, simungathe kuteteza nyanja popanda kutsatira njira. Ndipo njira yopita ku tsogolo - m'dziko la ana athu - silingadutse popanda kusintha ku zakudya zochokera ku zomera. Pofotokoza chifukwa chake adapita ku vegan, Cameron, XNUMX, adalozera kuwonongeka kwa chilengedwe komwe kumachitika chifukwa choweta ziweto kuti zidye.
“Palibe chifukwa chodyera nyama, ndi kusankha kwathu basi,” akutero James. Kumakhala kusankha kwakhalidwe komwe kumakhudza kwambiri dziko lapansi, kuwononga chuma ndikuwononga chilengedwe. ”
M’chaka cha 2006, bungwe la Food and Agriculture Organization la United Nations linatulutsa lipoti losonyeza kuti 18 peresenti ya mpweya woipa umene umabwera chifukwa cha anthu umachokera ku kuweta nyama. Ndipotu chiwerengerochi chikuyandikira 51%, malinga ndi lipoti la 2009 lofalitsidwa ndi Robert Goodland ndi Jeff Anhang wa Dipatimenti ya Environmental and Social Development ya IFC.
Billionaire Bill Gates posachedwapa anawerengera kuti ziweto zimapanga 51% ya mpweya wowonjezera kutentha. "(Kusintha zakudya zamasamba) ndikofunikira poganizira momwe chilengedwe chimakhudzira mafakitale a nyama ndi mkaka, chifukwa ziweto zimapanga pafupifupi 51% ya mpweya wowonjezera kutentha padziko lonse lapansi," adatero.
Akatswiri ena odziwika bwino a zachilengedwe amachirikizanso kusadya masamba, ponena za kuwonongeka kwa ziweto. Rajendra Pachauri, wapampando wa bungwe la Intergovernmental Commission on Climate Change, posachedwapa ananena kuti aliyense angathandize kuchepetsa mpweya wotenthetsa dziko mwa kuchepetsa kudya nyama.
Panthawi imodzimodziyo, Nathan Pelletier, katswiri wa zachuma ku yunivesite ya Dalhousie, Halifax, Nova Scotia, akunena kuti ng'ombe zomwe zimadyetsedwa ndi chakudya ndizo vuto lalikulu: ndizo zomwe zimaleredwa m'mafamu a fakitale.
Pelletiere akuti ng'ombe zodyetsedwa ndi udzu ndi zabwino kuposa ng'ombe zoweta, zomwe zimapopedwa ndi mahomoni ndi maantibayotiki komanso kukhala m'malo opanda ukhondo asanaphedwe.
"Ngati vuto lanu lalikulu ndikuchepetsa utsi, musamadye nyama ya ng'ombe," akutero Pelletier, pozindikira kuti pa 0,5 kg iliyonse ya ng'ombe imatulutsa 5,5-13,5 kg ya carbon dioxide.
“Kuweta ziweto mokhazikika kuli ngati migodi. Ndizosakhazikika, timatenga popanda kupereka chilichonse pobwezera. Koma ngati mudyetsa ng'ombe udzu, equation imasintha. Mudzapereka zambiri kuposa zomwe mwatenga. ”
Komabe, akatswiri ena amatsutsa mfundo yakuti ng’ombe zodyetsedwa ndi udzu siziwononga kwambiri chilengedwe poyerekezera ndi ng’ombe za m’mafakitale.
Dr. Jude Capper, wothandizira pulofesa wa sayansi ya mkaka pa yunivesite ya Washington State, ananena kuti ng’ombe zodyetsedwa ndi udzu n’zoipa mofanana ndi zimene zimaleredwa m’minda ya mafakitale.
“Nyama zodyetsedwa ndi udzu zimafunika kuseŵera padzuwa, kudumpha chifukwa cha chisangalalo ndi chisangalalo,” akutero Capper. "Tinapeza kuchokera kumtunda, mphamvu ndi madzi, ndi carbon footprint, kuti ng'ombe zodyetsedwa ndi udzu ndizoipa kwambiri kuposa ng'ombe zodyetsedwa chimanga."
Komabe, akatswiri onse odyetsera zamasamba amavomereza kuti ubusa umawopseza dziko lapansi, ndipo zakudya zokhala ndi zomera zimakhala zotetezeka kwambiri kuposa nyama. Mark Reisner, yemwe kale anali mtolankhani wa bungwe la Natural Resources Conservation Council anafotokoza momveka bwino, akulemba kuti, “Ku California, wogwiritsa ntchito madzi wamkulu kwambiri si Los Angeles. Si mafakitale amafuta, mankhwala kapena chitetezo. Osati minda ya mpesa kapena mabedi a phwetekere. Awa ndi msipu wothirira. Vuto la madzi akumadzulo - ndi zovuta zambiri zachilengedwe - zitha kufotokozedwa mwachidule m'mawu amodzi: ziweto. "