Zoyera, zofiirira, zobiriwira, zanyani?

Kuyang'ana dzira la mazira kapena msika wa alimi, ndipo mudzazindikira makatoni a mazira oyera olekanitsidwa kukhala oyera ndi ofiirira, nthawi zina ngakhale obiriwira kapena abuluu. Koma atangofika pa mbale, mwina, kapena ophika mkate, ndizovuta kunena kusiyana. M'malo mwake, pali kusiyana kotani pakati pa mazira okhala ndi zipolopolo za mitundu yosiyanasiyana?

Uwu si ufa kapena mpunga. Mazira a Brown sikuti "zachilengedwe," ndipo mazira oyera sanapangidwenso bulichi. Mitundu yonseyi imachitika mwachilengedwe, monga mazira a nkhuku yobiriwira. Koma kwenikweni, mazira onse a nkhuku ndi omwewo mkati. Nanga chimayambitsa mitundu yosiyanasiyana ya mbalame yomwe ili pakati pa mbalame yomweyo?

Dr. Justin Foowler, pulofesa yemwe ali ku yunivesite ya Georgia ya Georglt, amawala pazinthu. "Mitundu yosiyanasiyana, kapena kukhalapo kwa malo opaka kapena kuwala, kubwera kwa mbalame," akutero.

"Nkhuku za Leghorn (zomwe zimapanga zambiri zamasamba ku US) zitaikira mazira oyera, pomwe orphingtons kapena miyala ya Plymoun isanjika mazira a bulauni. "AMOuraukuda Bersan ali ndi pigment yomwe imatha kufika pa chipolopolo chonse ndikupanga mazira amtambo omwe ali ndi utoto wamtambo womwe umakuda mkati ndi kunja kwa chipolopolo."

Mukufuna kudziwa ngati nkhuku inayake idzatulutsa dzira loyera kapena dzira lofiirira? Onaninso khutu la nkhuku. (Mosadabwitsa, mbalame zimakhala ndi khutu!) Ndipo kawirikawiri kuposa, nkhuku zokhala ndi nthenga zopepuka zimakonda kukhala ndi nthenga zowoneka bwino, ndipo mazira oyera, pomwe iwo omwe ali ndi nthenga zachikuda komanso khutu amatulutsa mazira achikuda.

Kodi mtunduwu umachokera kuti? Apa ndi pomwe kumvetsetsa momwe dzira limakhalira ndikofunikira. Mankhusu a nkhuku, kapena ova, mawonekedwe mu thumba losunga nkhuku. Ovum opangidwa kwathunthu asiya ovary ndikuyika oviduct. Gawo ili la njira ya kubereka ya nkhuku ili ndi zigawo zisanu zomwe zakhala zosintha zomwe zimadutsa kunja kwa dziko lakunja, koma ndi chachinayi - GULD ilost - lomwe limakhudza mtundu wa dzira. Apa ndipomwe mitundu ya zipolopolo mozungulira ovum.

"Chigoba cha mazira onse a nkhuku chimapangidwa ndi carcium carbonate, kristal yoyera. "Chifukwa chake mazira onse ali, osachepera, oyera. Aliyense yemwe tikumuwona kuti ndi utoto woyikika, atayikidwa kale. Mutha kuwona Izi ngati mutsegula dzira lofiirira ndikuyang'ana mkati mwa chipolopolo, zikhala zoyera. "

Maulalo awiri ali ndi udindo wa mawonekedwe a nkhuku. Mithunzi ya amadyera ndi mabungwe amayambitsidwa ndi pilventin bilivedin, pomwe protoprorphin ndi udindo wa hudu wa bulauni.

Njira yomweyo yama dzira imakhala yoona kwa mbalame zonse zokhala ndi mazira okongola. A Robin Robin (Turus Migratoriyo) mazira, mwachitsanzo, ndi mtundu wabuluu. Mazira owoneka ngati peyala wamba (Uriria Aalge) amatha kusewera buluu wakuda, amawathamangitsidwa kapena amatulutsa mizere yofiirira.

Kodi mazira a nkhuku ayenera kusungidwa kapena kutentha? Zimatengera ngati mukukhala m'dziko (ku Australia, Japan ndi United States, mwachitsanzo) zomwe zimafunikira mazira opangidwa kuti wogulitsa azigulitsa. Njirayi imateteza Safemolla, komanso imachotsa chimbudzi cha axy chomwe chimateteza mazira motsutsana ndi tizilombo tating'onoting'ono.

Zowonjezera, ngati mukufuna kukhala ndi chidwi ndi pepala la Eva kapena Eva Sped Pad & Eva Truved Pad & Eva Trucle Pad & Eva Tretter Pad & Eva Tretter Pad & Eva Tretter Pad & Eva Tretter Pad & Eva Tretter Pad & Eva Tretter Pad & Eva Tretter Pad & Eva Tred Pad & Eva Tretter Pad & Eva Tracred Pad

Gulu la oyimba

2018.03.20

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