Munthu anayamba kuyang'anira zinyama zakutchire kuti azipeza chakudya chodalirika zaka 10-12,000 zapitazo. Ngakhale pamenepo anayamba kusankha anthu omwe ali ndi makhalidwe ofunika. Poyamba, makhalidwewa adagawidwa mosadziwa, koma patapita nthawi anayamba kusankha mwa njira yapadera. Lingalirani mitundu, njira, zizindikiro ndi zizindikiro zomwe zimagwiritsidwa ntchito posankha ndi kusankha mu ziweto zaulimi.
Kodi kusankha ndi kusankha nyama zakutchire ndi chiyani?
Poyambitsa mitundu yatsopano ndi kusintha kwa zomwe zilipo m'zinthu zabwino, zowonjezereka, zozizwitsa ndi zina zabwino za nyama zakutchire, kusankha ndi kusankha anthu pa fuko kumagwiritsidwa ntchito.
Pa ntchito yobereketsa, choyamba musankhe kusankha amuna ndi akazi ndi ntchito yabwino yobereka. Ndiye pakati pa nyama zosankhidwa ndi kusankha kwa awiri awiri awiri kuti akhale ndi ana ndi makhalidwe abwino. 
Mafomu a kusankha
Wina Charles Darwin adanena kuti kupanga mapangidwe atsopano a zinyama ndi kupititsa patsogolo zomwe zilipo chifukwa chosankha zachilengedwe.
Mukudziwa? Charles Darwin, yemwe ndi katswiri wodziwika bwino wa zachilengedwe, analibe maphunziro, ndipo anali wokonzeka kukhala wansembe kapena dokotala. Anali kudziphunzitsa yekha, ndipo bambo ake Robert Darwin, dokotala wolemera komanso wamalonda, nthawi zambiri ankanyoza mwana wake chifukwa chokondwera ndi zinyama ndipo sankaona kuti ntchitoyi ndi ntchito yaikulu.Mwa kusankha kwachirengedwe, timadziwa kupulumuka ndi kuteteza zamoyo zimenezi, zomwe, chifukwa cha kusintha kwawo, zimakhala zogwirizana kwambiri ndi zikhalidwe za kunja. Motero, kupyolera mwa kupulumuka ndi kubalana kwa anthu osinthika kwambiri, zamoyo zamoyo zakutchire ndi zomera zimachitika.
Kusankha kwapadera kumapangidwa ndi munthu mwa kusankha mtundu ndi kupulumutsira kubereka anthu omwe ali ndi makhalidwe abwino.
Kodi hatchi yasintha motani chifukwa cha kusankhidwa kwa chilengedwe
Zachilengedwe
Iyi ndiyo njira yaikulu ya chisinthiko, chifukwa cha zamoyo zomwe zimapulumuka, zomwe zimagwirizana kwambiri ndi malo omwe alipo. Ndicho chifukwa chokha chomwe iwo amasinthira kusintha kwa chirengedwe, chifukwa chifukwa cha kusintha kwake kumasintha zomwe zimapangitsa izi. Icho chinali chofunikira kwambiri pamene bamboyu anali kukwatulidwa ndi zinyama zakutchire, koma kuti zinyama zamakono zisawonongeke.
Phunzirani momwe mungasankhire akalulu, atsekwe, nkhuku zobereka.
Zopangira
Ili ndi kusankha kwa anthu a zinyama ndi makhalidwe omwe ali ofunikira ulimi, popeza ana kuchokera kwa iwo ndi zofunikira zofunika. Amatchedwanso kusankha dziko, ndipo chifukwa chake, tsopano pali mitundu yambiri yosiyanasiyana ya ziweto.
Pali mitundu yosiyanasiyana yosankha zochita. 
Mitundu yambiri ya galu
Zosangalatsa
Kusankhidwa kumeneku kumapangidwa malinga ndi zenizeni za ziweto zomwe zimakondweretsa munthu - izi ndi makhalidwe abwino, kunja, mphamvu, malamulo, ubereki, ndi ena. Zomwe zimayambira komanso khalidwe labwino la mbeu sizingaganizidwe.
Imodzi mwa mitundu ya kusankha misala ndi gulu, pamene anthu omwe asankhidwawa adagawidwa m'magulu molingana ndi cholinga cha kuswana kwina.
Aliyense
Amaganizira za mtundu wa nyama zosankhidwa. Pamene akuonedwa kuti ndi chiyambi, khalidwe la ana, achibale ake, zolembera za pedigree zimasungidwa.
Kusankha kwa munthu aliyense kumapindulitsa kwambiri kuposa kusankhidwa kwa misala ndipo nthawi zambiri amagwiritsidwa ntchito popanga ntchito.
Phunzirani momwe mungasamalire mahatchi, njiwa, ng'ombe.
Osalunjika
Malingana ndi lamulo la mgwirizano, lomwe limati kusintha kwa zizindikiro zina kumapangitsa kusintha kwa ena. Kusankhidwa mwachindunji kumachitika pazizindikiro zomwe sizili zofunikira kuchokera ku ziweto zaulimi. Koma zizindikiro izi zimasonyeza kukhalapo kwa zina, makhalidwe ofunika kwambiri mu nyama yosankhidwa. Mwachitsanzo, opanga ng'ombe amakafufuzidwa kuti akhalepo ndi majeremusi olakwika. 
Kulimbitsa
Zimayikidwa pa kusungidwa ndi kumangika ziweto zamtundu, zomwe zimapindulitsa kuweta zinyama. Pamene akanidwa anthu omwe achoka ku zikhalidwe zakhazikitsidwa. Ndikofunika kuti mafakitale azidyetserako zinyama, momwe gulu la ziweto liyenera kukhala lofanana kuti lisasokoneze ndondomeko yamakono. Mwachitsanzo, ng'ombe zimatsutsidwa ndi udzu ndi misozi yomwe imalola kuti makina osakanikirana asamangidwe.
Phunzirani mmene mungasamalire nkhuku za kholo.
Zizindikiro ndi zizindikiro za kusankha
Kusankhidwa kumachitika pazifukwa zosiyanasiyana ndi zizindikiro. Zizindikiro ndizofunika kwambiri kuchokera ku khalidwe la ulimi, chifukwa cha nyama zomwe zimayambira (mkaka, nyama, ubweya, ubweya ndi ena).
Zizindikirozo zikugwirizana ndi zizindikiro za kuchuluka komwe zizindikiro zofunikira zimakhalira (kukhala ndi kulemera, kukolola kwa nyama, kuchuluka kwa mafuta ndi mkaka, ubweya wa ubweya, etc.).
Zolinga za chisankho zingakhudze zizindikiro zosiyanasiyana ndi zizindikiro. Kusankhidwa ndi zizindikiro zambiri sikophweka ndipo sikokwanira nthawi zonse. Ngati mumasankha zingapo, mukhoza kusiya makhalidwe ena ofunikira, kutayika kumene kumawononga zotsatira za zinyama. 
Ndi bwino kupanga chisankho pamaziko a zinthu zomwe zimakhudza makhalidwe, chikhazikitso komanso thanzi la anthu omwe asankha.
Ndikofunikira! Sikofunikira pakusankha nyama zambiri kuti ziyesetse zizindikiro zopindulitsa. Chotsatira cha kusankha ku Holland kwa ng'ombe ndi kuchuluka kwa mkaka ndiko kufooketsa malamulo a ng'ombe ndi mafuta ochepa mkaka.
Kusanthula ndi kusankha nyama mwalamulo, kunja ndi thupi
Kwa nthawi yaitali obereketsa anazindikira kukhalapo kwa mgwirizano pakati pa zinyama zam'thupi ndi makhalidwe awo, othandiza kugwiritsa ntchito ulimi. Malingana ndi izi, zofunikira zina za ntchito, malamulo, kunja ndi kulemera kwa thupi zinapangidwa.
Kuwonjezera kwa nyama kumakhudza kugawidwa kwa mitundu mu njira yogwiritsira ntchito: nyama, mkaka wa nyama ndi mkaka, mbuzi; nyama, nyama ndi khungu, ndi pansi pa akalulu, ndi zina zotero.
Pakusankhidwa kwa ng'ombe za mkaka, zimaperekedwa kwa zizindikiro, kukula kwake ndi mawonekedwe a udzu ndi mapiko, magawo okhudza ziwalo za kupuma ndi ntchito ya m'mimba (chifuwa chakuya, chitukuko cha peritoneum, etc.).
Kwa nyama zamtundu wa ng'ombe, anthu opangidwa ndi thupi amasankhidwa omwe amapindulitsa kwambiri popereka zakudya zamtundu wapamwamba (minofu yotukuka, mowirikiza ndi zozungulira, ndi zina zotero).
Nyama zolephereka zomwe zimachepetsa zokolola (kuchepa kwa pakhosi, kuchepa, miyendo yofooka, etc.) zimakanidwa. Kusankhidwa malinga ndi lamulo, kunja ndi kulemera kwa thupi kumalimbikitsa kulimbikitsa ndi kulimbikitsa pakati pa zinyama zazinyama zowonjezereka, kuwonjezera kukula kwake.
Dzidziwitse nokha ndi mitundu yambiri ya ng'ombe, mkaka, nyama ndi mkaka; okwera ndi akavalo aakulu; ubweya ndi akalulu nyama; mbuzi; merino, mkaka, mafuta-tailed, nkhosa; nkhumba.
Ndi zokolola
Mtundu umenewu ndi wofunika kwambiri pa ulimi wa ziweto. Kukonzekera kumatsimikiziridwa ndi makhalidwe oyenerera ndi oyenerera a zinthu zomwe zinapangidwa kuchokera kwa munthu mmodzi pa nthawi yapadera. Kwa mtundu uliwonse wa ziweto ndi zokolola zili ndi miyezo yake ndi maonekedwe ake.
Ng'ombe za mkaka zimasankhidwa malinga ndi zokolola za mkaka kwa masiku 305 a lactation, poganizira zaka ndi mtundu, mafuta a mkaka ndi mapuloteni, mazira a lactation. Kufufuza kumapangidwa mwa kudyetsa, kusunga ndi kugwiritsa ntchito zinyama molingana ndi miyezo yakhalidwe ndi miyambo. Ndibwino kuti muyese kuwonetsetsa kotere kwa nthawi zingapo za lactation.
Ng'ombe yamphongo imasankhidwa nthawi ya moyo komanso ikaphedwa. Mu zitsanzo zamkati, kunja, kulemera kwalemera ndi kulemera kwa thupi kumayerekezera kuti akufika msinkhu winawake. Kenaka, kuyambitsirana kotereku pambuyo pa kuphedwa kumaphatikizidwa ndi zizindikiro zoyambirira za zokolola za nyama, monga kupha nyama, chiŵerengero cha mafuta, nyama ndi mafupa, calorie, kulawa, ndi ena.
Nkhumba zimasankhidwa kuti zikhale zokolola, kuyesa kuchuluka kwa fecundity, chiwerengero cha cubs mu malita imodzi, mwangwiro, khalidwe la nyama zakufa.
Onetsetsani nkhuku zabwino kwambiri za nkhuku zosiyanasiyana pa zokolola.Nkhosa zabwino kwambiri ndi ubweya wa nkhosa ndi hafu zimasankhidwa kuti zikhale ndi zizindikiro zapamwamba ndi zowonjezera za ubweya wa nkhosa womwe umatulutsidwa kwa chaka. Ubwino wa smushki umagwiritsidwa ntchito chifukwa cha maswiti, mitundu yophimba ubweya amaweruzidwa ndi ubweya wa nkhosa, mchira wa mafuta ndi ubweya wa nyama ndi kuchuluka kwa nyama.
Zina mwa mbalame za mtundu wa dzira, mazira ndi dzira zimaganiziridwa, mbalame za nyama, kuchulukitsa kwa kulemera kwa moyo, chakudya chokwanira pa 1 kg kulemera, kulawa, ndi zina zotero.
Kusankhidwa kwa nkhuku ndi zinyama kwa fuko: kanema
Malingana ndi moyo wautali
Nyama zimalandira moyo wautali kuchokera kwa makolo awo. Mitundu yosiyanasiyana ndi mizere ya nthawi yake ingasiyane. Kwa zinyama, ndizofunika kusankha anthu omwe ali opindulitsa kwambiri omwe amatha kukhala ndi makhalidwe abwino kwa nthawi yaitali.
Mukudziwa? Ng'ombe za Aberdeen-Angus zimatchuka chifukwa cha moyo wake wautali - ng'ombe zimakhala zaka 18-20, ndipo ng'ombe zimafika zaka 25-30. Nthawi yayitali ya moyo imayesedwa ndi Tagil, Red Tambov ndi Kostroma ng'ombe.Njira yodalirika yokhala ndi zinyama m'minda yayikulu inali ndi zotsatira zoyipa pa nthawi ya moyo wa ng'ombe, ndipo kugwiritsa ntchito ndi kuswana kwa mitundu yautali ndizofunika kwambiri kwa iwo.
Malinga ndi zinthu zamakono
Zinakhala zofunikira pa chitukuko cha mafakitale a zinyama. Otsatsa anayamba kuganizira kuti kusintha kwazomwekugwiritsidwa ntchito pazinthu zamakono, zomwe sizikuwonetseratu nthawi zonse zinyama.
Zinyama zazikulu nthawi zambiri zimaphatikizapo zoletsa kuyenda ndi kusunga madera ang'onoang'ono. Mkhalidwe woterewu umaloledwa bwino ndi anthu omwe ali ndi dongosolo lamanjenje lokhazikika, kawirikawiri akuyankha zomwe zili m'magulu akuluakulu.
Kuweta ng'ombe ndi hardware kunayambitsa zofunikira zambiri pa magawo a udder ndi ma teats a mitundu ya mkaka, mkaka wokolola mkaka. Mukasunga nyama kumalonda, anayamba kusankha zinyama zokhala ndi miyendo yamphamvu ndi ziboda, popeza kuti zovuta zowononga zidazi zimapweteka.
Onani mitundu ya atsekwe, mbalame zamphaka, zinziri, turkeys, abakha, pheasants pofuna kuswana kunyumba.
Kuchokera (genotype)
Kusankhidwa ndi genotype kumathandiza kusankha nyama molingana ndi ziyeneretso zake zoyenera kukhala nazo ngakhale asanabadwe. Choncho, obereketsa ndizo ziweto, zomwe zimasonyeza makolo ndi luso lawo lopindulitsa, zowoneka ndi zizindikiro zina. Mitengo yambiri ndi ya anthu omwe pedigrees ndi kukula kolimba kwa makhalidwe opindulitsa amawonetsedwa ndipo makolo amapezeka ndi manambala olemba.
Panthawi yosankhidwa, zokolola zapadera (abale, alongo ndi ena) zimaganiziranso. 
Ndi khalidwe la ana
Kusankhidwa kumeneku kumakulolani kuti mudziwe kufunika kwa nyama pa fuko. Kawirikawiri amayesetsa kupeza oweta abwino kwambiri omwe amapereka akazi omwe ali ndi ana omwe ali ndi makhalidwe abwino.
Kwa nyama zambiri (mwachitsanzo nkhumba), akazi ndi ofunikira. Chifukwa cha izi, mu famu ya nkhumba, anthu ambiri amatengedwa kuti akhale okalamba oyamba kusiyana ndi kufunikira kwa kubereketsa ziweto.
Kuwunika kumapezeka mu kukula kwa malita, milkiness, kupindula ndi zina, ndikubzala mbeu zabwino kwambiri.
Phunzirani momwe mungagwiritsire ntchito sireku.
Ng'ombe imasankhidwa, kuyesa ana ake aakazi pamakhalidwe abwino ndi ochulukitsa a mkaka, kunja ndi kulemera, ndi kukhalapo kwa zizindikiro zamakono.
Zizindikiro izi zikufaniziridwa motere:
- ndi ana ochokera kwa ena opanga;
- ndi amayi;
- ndi anzanga ena;
- ndi deta zambiri;
- ndi miyezo ndi malamulo a mtunduwu.
Ngati chiwerengerochi chikadutsa, ndiye kuti ng'ombeyo imasankhidwa ngati wofalitsa, ngati ikuchepa, ndiye kuti mwamuna wotereyo amagwiritsidwa ntchito pang'onopang'ono kapena kukanidwa.
Zina mwazinthu zimaganiziranso kuti zolinga za ana ndi zolondola:
- zaka za awiri awiri;
- chikoka cha amayi;
- kudyetsa ndi kumanga nyumba;
- Kuwonetsetsa bwino ndi kusanthula ana onse omwe amachokera;
- kulondola kwa kulingalira kwa makhalidwe obereketsa;
- chiwerengero cha ana onse ndi maina awo.
Dziwani kuti ndi malamulo otani omwe amasunga mbalame pandekha.
Mafomu a kusankha
Kuweta nyama, pali mitundu yosiyana ya awiriwa.
Aliyense
Ndi chisankho cha munthu aliyense, mkazi aliyense amasankhidwa kuti azisamalira mwamuna kuti abereke ana ndi zizindikiro zabwino kwambiri. Chisankho chotero ndi nthawi yowonjezera komanso yotsika mtengo. Amagwiritsidwa ntchito makamaka pofuna kutsogolera ana aang'ono kuti abereke.
Sizowonjezera kuti muzilombo zowonongeka zikhale zosayenera, monga momwe zilirimu, mbewu zambiri kuchokera kwa opanga zabwino zikuwonongeka. 
Nyama imabereka nkhunda - Mfumu. Nkhunda zimakhala zosagwirizana, choncho kusankha kwa munthu kumakhala koyenera.
Gulu
Pogwiritsa ntchito kusankha gulu ku gulu la akazi, amasankhidwa amuna awiri.
Kusankhidwa kwa gulu liri ndi mitundu itatu:
- kusiyanitsa. Posankha mitundu yosiyanasiyana ya gululi, wopanga wabwino amasankhidwa kuti azisamalira gulu la akazi, ndipo pamene palibe umuna wokwanira, chimagwiritsanso ntchito chimodzi chomwe sichimapanga bwino. Kusankhidwa kumeneku kumagwiritsidwa ntchito pa malo obereketsa a fuko, komanso kugawidwa kwa nyama;
- kufanana. Ndi mtundu uwu, amuna awiri amasankhidwa, omwe ali ndi zizindikiro zofanana, ndipo amagwiritsidwa ntchito pa gulu lomwelo la akazi omwe ali ofanana. Mtundu uwu umagwiritsidwa ntchito poyezetsa, komanso kuti ukhale wokolola komanso makhalidwe ena. Ndiye wolima wamwamuna, yemwe anapereka ndalama zapamwamba kwambiri, amakhala mtsogoleri, ndipo ena onse amalandira udindo wa osungirako, kapena, ndi zotsatira zovuta, amakanidwa chabe. Maganizo amenewa amathandiza kusankha wopanga bwino kwambiri;
- chosadetsedwa. Pogwiritsira ntchito mtundu uwu wamwamuna, omwe ali ndi zizindikiro zosiyana, amagwiritsa ntchito feteleza gulu la akazi mu dongosolo la kusinthana. Njirayi sichitha kugwiritsidwa ntchito pa malo opangira ntchito yobereketsa, ndipo imatha pang'onopang'ono kuchitidwa posankha zinyama.
Njira zosankha
Pali njira ziwiri zosonkhanitsira - zogwirizana komanso zosagwirizana.
Wogwirizana (homogeneous)
Njirayi ikuphatikizapo kusankha kwa bambo wamwamuna. Pa nthawi yomweyo, onse awiri ali ndi makhalidwe ofunikira omwe akufuna kuwalimbikitsa ndi kuwathandiza m'badwo wam'tsogolo.
Mwachitsanzo, kavalo wothamanga kwambiri amasankhidwa pa kavalo wothamanga kwambiri, ndipo ng'ombe yamphongo yokhala ndi mkaka wapamwamba imasankhidwa ndi ng'ombe, yomwe imakhala ndi mkaka wamtundu wa mavitamini, ndiko kuti, kusankha kumapangidwa pa malo omwewo.
Mukudziwa? Choncho, wasayansi wotchuka-ziweto Kuleshov PN mu ntchito zake, adanena kuti kufanana pakati pa anthu osankhidwa kungakhale kosiyana, koma kulimbikitsanso, mwayi waukulu wolowa cholowa.
Pambuyo pa kulandira anawo amasankhidwa kuti abereketse kuswana ndi makhalidwe omwe adatchulidwa kwambiri kuchokera kwa makolo awo. Njirayi imaloleza kukonza ndi kulimbikitsa makhalidwe abwino a fakitale m'tsogolo mwa ana.
Kusankhidwa kwa nyama ndi kubereka kwawo malingana ndi makhalidwe ndi makhalidwe oyenerera kumawonjezera makhalidwe oyenerera m'mwana aliyense watsopano, komanso kumathandiza kuti mtunduwu ukhale wolemekezeka. 
Kusankhidwa kwapadera kumathandiza kupanga mapangidwe a makhalidwe ena m'gulu. Motero, kufanana kwa ubweya woperekedwa kuchokera ku nkhosa kumatengedwa kuti ndi chinthu chofunikira kwambiri pakupanga nsalu.
Минусом такого подбора является нарастание гомозиготности, снижение изменчивости, показателей продуктивности, снижению жизнестойкости.
Kuti athetse vuto lililonse pa mtunduwu, njirayi silingathe. Komanso, sichikuthandizira kukhazikitsa makhalidwe abwino.
Njira yosiyana kwambiri ya njira yokhala ndi ma homogeneous ndi kuswana ndi kusankha nyama zomwe zakhudzana ndi maubwenzi (inbreeding).
Zosasinthasintha (zosagwirizana)
Zimaphatikizapo kusankha nyama zakulera zomwe zimasiyana ndi makhalidwe ndi makhalidwe. Cholinga cha njirayi ndikulitsa chiwerengero cha zizindikiro, kusintha zinthu zabwino, kukana, ntchito zobereka, kuchepetsa makhalidwe oipa.
Kwa iye, ganizirani za ubwino wa zokolola, maonekedwe a maonekedwe, mtundu wa ana ndi abambo. Pachifukwa ichi, anthu omwe amasankhidwa kuti akwatirane nawo angakhale osiyana ndi zaka, ndipo kukula kwa kusiyana kwake kungakhale kosiyana. Pokhala ndi kusiyana kosiyana mu makhalidwe ena, anthu akhoza kukhala ofanana ndi ena.
Kugwiritsa ntchito njira yosakanikirana yophatikizirapo kumaphatikizapo kupeza ana, omwe adzalandira makhalidwe abwino a makolo onse, komanso athandizira kukulitsa zizindikiro zoyenera zobala ndi makhalidwe kwa zinyama. Mbadwo wotsatira udzakhala ndi umoyo wabwino.
Kuchuluka kwake kwa ana amtsogolo ndi njira iyi kumadalira pa zizindikiro zapamwamba za makolo, omwe ali ndi kusiyana pakati pa gulu lonse la ziweto. Kukhazikika mtima kumakula makamaka ndipo mgwirizano pakati pa zizindikiro zabwino za amayi ndi ana awo aakazi zimachepetsedwa pazochitikazo pamene zizindikiro za makolo zimasiyanasiyana mosiyana pakati pa ziweto.
Ndikofunikira! Pofuna kuchotsa mbadwo wina wamtsogolo kukhalabe ndi kholo limodzi, sikutheka kusankha wina kholo yemwe, ngakhale angathe kuthetsa kapena kuchepetsa vutoli, koma nthawi yomweyo ali ndi makhalidwe ena oipa.
Njira yowonongeka imagwiritsidwanso ntchito kuthetsa zofooka zomwe kholo limodzi liri nalo kotero kuti silikusokoneza mbadwo wam'tsogolo. Njira yosankhidwayi imatchedwa kukonza, komanso kukonza kapena kusintha.
Koma ndi bwino kuganizira kuti drawback inayake siingathe kuchotsedwa posankha kholo lina lomwe liri ndi vuto losiyana. Choncho, kusowa kwa akavalo ngati mawonekedwe a miyendo sizingawongosoledwe mwa kusankha stallion, amene ali ndi chikwama. 
Choncho, kuti ng'ombe ikhale ndi mkaka wabwino, koma mafuta ochepa a mkaka, musasankhe ng'ombe yopanga mavitamini omwe amachititsa mafuta ku mkaka, koma kuchepetsa mkaka. Chisankho choterocho chidzapangitsa kuwonongeka kwa khalidwe lofunika limene ng'ombe ili nayo.
Koma kwa ng'ombe yomwe ili ndi mkaka wochepa mkaka wa ma mkaka, kuti ukhale ndi ubwino wokhala ndi zokolola, ndibwino kusankha ng'ombe yopanga mankhwala ndi ma genetic katundu omwe ali ndi mafuta ochuluka mu mkaka. Anthu omwe ali ndi thupi losalimba amasankhidwa omwe ali ndi thupi labwino kwambiri.
Ndi njira zowonongeka zowonjezereka zimapezeka nthawi zambiri. Mitundu yambiri ya kusankha - kudutsa ndi kusakaniza.
Tiyenera kudziŵa kuti homogeneity ndi kusagwirizana kwa chisankho ndi lingaliro laling'ono, chotero, malinga ndi chinthu chimodzi, kusankhidwa kudzakhala mwa njira yokhalamo, ndi ina - ndi yosiyana kwambiri. Mwachitsanzo, ngati gulu la ng'ombe limapatsa mkaka 4.5 peresenti pachaka ndi mafuta okwana 3.7%, ndipo ng'ombe yowonjezera imaphatikizidwa ndi ma genetic omwe amapeza matani 9 ndi mafuta a 3.8%, ndiye kuti osagwirizana, ndi mkaka mafuta - homogeneous. 
Kusankhidwa bwino ndi kusankha nyama n'kofunika kuti tikwaniritse mitengo yamakono mu ulimi. Zochitika zamakono zogulitsa nyama zimapereka zofunikira zatsopano pa zinyama, ndipo zosankha zamakono zimaziganizira, kusankha zinyama zofunikira. Zotsatira zabwino zamasankhidwe a nyama ndi mapangidwe awiriwa zimapereka njira yowonjezera.
