Zotsatira za kugwiritsidwa ntchito kwa nyama sizimayima pa nthaka. Ngakhalenso ulimi umasowa madzi, ndipo ulimi wa zinyama ndi wosiyana. Zinyama zimadya madzi ochuluka mofanana ndi ntchito zina zonse za madzi ku United States pamodzi.
Kuwonjezera pa mbewu, nyama zimasowa madzi kuti azikhala ndi kukula kufikira ataphedwa. Pili imodzi ya ng'ombe imakhala ndi phindu la madzi pafupifupi 2500, pamene mapaundi a soy amafuna makilogalamu 250 a madzi ndi mapaundi a tirigu makilogalamu 25 okha.
Zotsatira za Nyama Yotulutsa Zakudya ndi Mazingira
Kuwombola nyama sikokwanira chifukwa kumafuna kudyetsa ndalama zochuluka kwa miyezi ndi zaka zambiri musanayambe kugula chakudya. Ndi madzi omwe amagwiritsidwa ntchito kupanga hamburger imodzi, mutha kumwa masewera olimbitsa thupi tsiku lililonse kwa milungu iwiri ndi theka.
Ngakhale EPA ikuwonetsa ulimi kukhala chonyozetsa madzi. Chifukwa chiyani? Mankhwala ophera tizilombo ndi nitrates omwe amagwiritsidwa ntchito mu feteleza ndi manyowa amalowa m'madzi athu apansi, potsiriza amatuluka m'nyanja yopanga zomwe zimatchedwa "zigawo zakufa" (malo ochepa kwambiri omwe amachititsa poizoni omwe samafesa kapena moyo wa zinyama sangathe kukhalapo) omwe amawonekera kuchokera ku malo m'malo ngati Gulf wa Mexico kumene Mississippi amathamangira m'nyanja.
Kuwonjezera pa mankhwala omwe akugwiritsidwa ntchito kulima, kuwonongeka kwadzidzidzi kupyolera mwa kutayika kwa mankhwala ndi manyowa a manyowa ndikupitirizabe kusokoneza madzi kuchokera ku feedlots.
Manyowa omwe amapangidwa kuchokera ku mabiliyoni a zinyama omwe anaphedwa chifukwa cha chakudya ayenera kupita kwinakwake, ndipo nthawi zambiri, amathera mitsinje ndi mitsinje, ndikupha mamiliyoni a nsomba m'modzi amagwa swoop.
Mfundo Yofunika Kwambiri
Kudya nyama ndiko kudetsa madzi ndipo kumathandiza kuti madzi asokonezeke. Ngati mumasamala za chilengedwe ndipo mukufuna kusunga madzi, njira yabwino ndikuchepetsera chakudya chanu chokhala ndi zamasamba , bwino, komanso zotsitsimula ena kuti azichita chimodzimodzi.
> Zosowa
> US Environmental Protection Agency. 1984. Lipoti ku Congress: Zopanda Kusokoneza Magazi ku US Office of Water Program Operations, Water Planning Division. Washington, DC
> Merritt Frey, et al., Spills ndi kupha: Kuwonongeka kwa manyowa ndi America's Livestock Feedlots, Water Water Network, Izaak Walton League of America ndi Natural Resources Defense Council (August 2000)