Darakta wanda ya lashe kyautar Oscar James Cameron, wanda kwanan nan ya tafi cin ganyayyaki saboda dalilai na ɗabi'a, ya yi suka ga masu kare muhalli da ke ci gaba da cin nama.
A cikin wani faifan bidiyo na Facebook da aka buga a watan Oktoban 2012, Cameron ya bukaci masu kula da muhalli masu cin nama da su canza zuwa tsarin abinci mai gina jiki idan suna da gaske game da ceton duniya.
“Ba za ku iya zama masanin muhalli ba, ba za ku iya kare teku ba tare da bin hanya ba. Kuma hanyar zuwa gaba - a cikin duniyar 'ya'yanmu - ba za a iya wucewa ba tare da canzawa zuwa abinci mai gina jiki ba. Da yake bayanin dalilin da ya sa ya tafi cin ganyayyaki, Cameron, XNUMX, ya nuna lalacewar muhalli da kiwon dabbobi ya haifar.
"Babu bukatar cin dabbobi, zabinmu ne kawai," in ji James. Ya zama zaɓi na ɗabi'a wanda ke da babban tasiri a duniyarmu, yana lalata albarkatu kuma yana lalata biosphere. "
A shekara ta 2006, Hukumar Abinci da Aikin Noma ta Majalisar Dinkin Duniya ta buga wani rahoto da ke cewa kashi 18% na hayaki mai gurbata muhalli da dan Adam ke fitarwa yana fitowa ne daga kiwo. A zahiri, adadin ya kusan kusan kashi 51%, bisa ga rahoton 2009 da Robert Goodland da Jeff Anhang na Sashen Muhalli da Ci gaban Jama'a na IFC suka buga.
Attajirin Bill Gates kwanan nan ya ƙididdige cewa dabbobi ne ke da alhakin kashi 51% na hayaƙin da ake fitarwa. "(canja wurin cin ganyayyaki) yana da mahimmanci ta la'akari da tasirin muhalli na nama da masana'antar kiwo, saboda dabbobi suna samar da kusan kashi 51% na iskar gas a duniya," in ji shi.
Wasu mashahuran masana muhalli kuma suna goyon bayan cin ganyayyaki, suna masu yin la’akari da barnar da kiwon dabbobi ke yi. Rajendra Pachauri, shugabar hukumar kula da sauyin yanayi ta gwamnatocin baya-bayan nan, ta ce kowa zai iya taimakawa wajen rage hayakin iskar gas ta hanyar rage cin nama.
A sa'i daya kuma, Nathan Pelletier, masanin tattalin arzikin muhalli a Jami'ar Dalhousie, Halifax, Nova Scotia, ya ce shanun da ake kiwon abinci su ne babbar matsalar: su ne ake kiwo a gonakin masana'antu.
Pelletiere ya ce shanun da ake ci da ciyawa sun fi shanun noma kyau, ana zubar da su da hormones da maganin rigakafi kuma suna rayuwa cikin mummunan yanayi na rashin tsafta kafin a yanka su.
"Idan babban abin da ke damun ku shine rage hayaki, bai kamata ku ci naman sa ba," in ji Pelletier, lura da cewa kowane kilogiram 0,5 na nama yana samar da kilogiram 5,5-13,5 na carbon dioxide.
“Kiwon dabbobi na al’ada kamar hakar ma’adinai ne. Ba shi da kwanciyar hankali, muna ɗauka ba tare da ba da komai ba. Amma idan ka ciyar da shanun ciyawa, ƙididdiga ta canza. Za ku bayar fiye da abin da kuke ɗauka.”
Sai dai wasu masana sun musanta ra'ayin cewa shanun da ake ci da ciyawa ba su da illa ga muhalli fiye da shanun masana'anta.
Dokta Jude Capper, mataimakin farfesa a kimiyyar kiwo a Jami'ar Jihar Washington, ya ce shanun da ake ci da ciyawa suna da illa ga muhalli kamar yadda ake kiwon su a gonakin masana'antu.
"Dabbobin da ke ciyar da ciyawa ya kamata su yi shawagi a cikin rana, suna tsalle don murna da jin daɗi," in ji Capper. "Mun gano daga ƙasa, makamashi da ruwa, da sawun carbon, cewa shanun ciyawa sun fi shanun masara muni."
Duk da haka, duk masana masu cin ganyayyaki sun yarda cewa kiwo yana barazana ga duniya, kuma abincin da ake ci na tsire-tsire ya fi dacewa da muhalli fiye da nama. Mark Reisner, tsohon wakilin ma'aikata na Majalisar Kula da Albarkatun Kasa ya taƙaita shi a fili, yana rubuta, "A California, mafi yawan masu amfani da ruwa ba Los Angeles ba ne. Ba masana'antun man fetur, sinadarai ko na tsaro ba. Ba gonakin inabi ko gadajen tumatir ba. Waɗannan wuraren kiwo ne da aka ban ruwa. Rikicin ruwa na yammacin Turai - da yawancin matsalolin muhalli - ana iya taƙaita su da kalma ɗaya: dabbobi."