Kutheni kukho amathumba amaninzi kunye nomhlaza kwizilwanyana zasekhaya ngoku?

uphando lomhlaza

Kwiminyaka yakutshanje, siye sadibana namathumba amaninzi, umhlaza, nezinye izifo kwizifo zezilwanyana zasekhaya. Uninzi lwamathumba anobungozi kwiikati, izinja, ihamster, kunye neehagu zeGuinea zisenganyangwa, ngelixa i-cancer enobungozi inethemba elincinci kwaye inokwandiswa ngokufanelekileyo kuphela. Okona kucekiseka ngakumbi kukuba ezinye iinkampani zisebenzisa uthando kunye nethamsanqa labanini bezilwanyana zasekhaya ukusungula amayeza okuthengisa kunye nonyango, kodwa xa ujongisiswa kufutshane, izithako zizimveliso zesondlo.

Amathumba kunye nomhlaza ayizozifo ezitsha, kwaye amathumba ethambo aye avela nakwiifosili ezininzi zezilwanyana. Ngaphezu kweminyaka engama-2000, oogqirha bebenikela ingqalelo kumhlaza wabantu, kodwa umhlaza usengoyena nobangela uqhelekileyo wokufa kweekati, izinja nabantu kumazwe ahambele phambili kwezoqoqosho. Oogqirha baye benza inkqubela ebonakalayo kuphando lomhlaza womntu. Njengezilwanyana ezanyisayo, oogqirha bezilwanyana basebenzise uninzi lolwazi lwabo kunyango lwezilwanyana zasekhaya. Ngelishwa, oogqirha bezilwanyana banolwazi olulinganiselweyo malunga nomhlaza othile kwizilwanyana, kwaye uphando lwabo ngamathumba anobungozi lungaphantsi kakhulu kunolwabantu.

Nangona kunjalo, uluntu lwezilwanyana luye lwafumanisa ezinye iimpawu zomhlaza wesilwanyana emva kweminyaka yophando. Izinga lokwenzeka kwamathumba omhlaza kwizilwanyana zasendle liphantsi kakhulu, kwaye izinga lezehlo zezilwanyana zasekhaya liphezulu kakhulu; Izilwanyana ezifuywayo zithandwa kakhulu ngumhlaza kumanqanaba okugqibela obomi, kwaye iiseli zabo zityekele ngakumbi ekuguqukeni kwiiseli zomhlaza; Siyazi ukuba ukubunjwa komhlaza yinkqubo entsonkothileyo, enokuthi ibangelwe zizinto ezahlukeneyo ezifana nemfuza, indalo, isondlo, indaleko, kunye nokusebenzisana kwezinto ezahlukeneyo ngokuthe ngcembe. Sinokuqonda ezinye zezona zizathu ziphambili zamathumba kunye nomhlaza, okwenza kube lula kwizilwanyana zasekhaya ukunciphisa amathuba okugula ngaphakathi kwamandla abo.

Izinto ezibangela ithumba

Imiba yemfuza kunye negazi zizinto ezibalulekileyo ezibangela umhlaza wethumba, kwaye amanani omhlaza wezilwanyana axhasa ukufumaneka komhlaza wethumba. Ngokomzekelo, kwiintlobo zezinja, i-Golden Retrievers, i-Boxers, i-Bernese Bears, kunye ne-Rottweilers zihlala zithandwa kakhulu kwii-cancer ezithile kunezinye izinja, ezibonisa ukuba iimpawu zofuzo zikhokelela kumngcipheko omkhulu womhlaza kwezi zilwanyana. ezi zilwanyana zinokubangelwa kukudityaniswa kwemizila yemfuza okanye ukutshintsha kwemizila yemfuza yomntu ngamnye, kwaye oyena nobangela awukachazwa.

Kuphando ngomhlaza womntu, siyazi ukuba uninzi lwemihlaza inxulumene ngokusondeleyo nokusingqongileyo kunye nokutya. Imiba efanayo yomngcipheko ifanele isebenze nakwizilwanyana zasekhaya, kwaye ukuhlala kwindawo efanayo nomnini-khaya kusenokubangela umngcipheko ofanayo. Nangona kunjalo, ezinye izilwanyana zasekhaya zinokuqhelana ngakumbi nemekobume engalunganga kunabantu. Ngokomzekelo, ukuba sesichengeni semitha ye<em>ultraviolet ixesha elide kunokukhokelela kumhlaza wolusu ebantwini. Nangona kunjalo, uninzi lweekati kunye nezinja zineenwele ezinde, nto leyo eyenza ukuba zixhathise ngakumbi. Noko ke, ngokufanayo, ezo kati nezinja ezingenaboya okanye zineenwele ezimfutshane zinokuchaphazeleka kakhulu. Umsi wesibini, ungcoliseko olumandla lomoya, kunye nenkungu zezinye zezona zinto zibangela umhlaza wemiphunga ebantwini, ezikwasebenza kwizilwanyana zasekhaya ezifana neekati nezinja. Ziziphi ezinye izitshabalalisi zemichiza, imichiza yokutshabalalisa ukhula, kunye nezinto ezinentsimbi enzima nazo zizizathu ezinokwenzeka. Nangona kunjalo, ngenxa yokuba ezi zilwanyana zasekhaya ngokwazo zinetyhefu kakhulu, ukubonakaliswa rhoqo kuzo kunokukhokelela ekufeni ngenxa yetyhefu ngaphambi kokuba kubangele amathumba omhlaza.

Zonke izilwanyana zasekhaya ezaziwayo ngoku zine-squamous cell carcinoma, elithumba eliyingozi (umhlaza) elenzeka kwisikhumba esingekho nzulu. Emva kokuqwalaselwa, ukukhanya kwexesha elide kwilanga kunye nemitha ye-ultraviolet yimbangela ebalulekileyo yesifo. Ukongezelela, iikati ezimhlophe, amahashe, izinja kunye nabanye abanemigca emhlophe badla ngokuba ne-squamous cell carcinoma; Iikati ezitshayayo zikwayindawo esemngciphekweni omkhulu womhlaza, kwaye i-carcinogens kumsi wecuba zibonakaliswe ukuba zibangela i-squamous cell carcinoma emlonyeni wekati.