UMary Allen
Isingeniso: Ukuqonda I-Canine Reproduction
Ukukhiqizwa kwe-Canine kuyinqubo eyinkimbinkimbi ehilela izinguquko eziyinkimbinkimbi ze-hormonal nezomzimba kuzo zombili izinja zesilisa nezinsikazi. Umjikelezo wokuzala wezinja uhlukaniswe izigaba ezine: i-proestrus, i-estrus, i-diestrus, ne-anestrus. Phakathi nesiteji se-estrus, esaziwa nangokuthi umjikelezo wokushisa, izinja zesifazane ziyakwamukela ukukhwelana futhi zibonise izinguquko ezihlukahlukene zomzimba nezokuziphatha. Izinja zesilisa, ngakolunye uhlangothi, zithola ukwanda kwamazinga e-testosterone, okubangela ukuqala kokuziphatha kocansi.
Kungani Izinja Zinamathelana Ngesikhathi Sokukhwelana?
Enye yezindlela zokuziphatha ezingavamile kakhulu ezivezwa izinja ngesikhathi sokukhwelana ukubambeka ndawonye. Lesi simo, esibuye saziwe ngokuthi “ukubopha ifindo” noma “uthayi,” kwenzeka lapho ipipi lenja yesilisa likhukhumala ngemva kokuphuma isidoda, okubangela ukuba likhiyeke ngaphakathi kwesitho sangasese sowesifazane. Indlela yokukhiya iqinisekisa ukuthi isidoda sowesilisa sinesikhathi esanele sokufika emaqandeni esifazane futhi andise namathuba okuzala.
Iqhaza Lama-Hormone Ekukhiqizeni I-Canine
Amahomoni adlala indima ebalulekile ekukhiqizeni izinja, njengoba elawula izinguquko ezihlukahlukene zomzimba nezokuziphatha ezenzeka phakathi nomjikelezo wokuzala. Ezinjeni zezinsikazi, i-hormone estrogen inesibopho sokuqalisa isigaba se-proestrus, kuyilapho i-progesterone iqala ukuqala kwe-estrus. Ezinjeni zesilisa, i-testosterone inesibopho sokuthuthukiswa kwezici zobulili zesibili, njengokukhuphuka kwemisipha kanye nokukhula kwamasende.
Isayensi ngemuva kweNdlela Yokukhiya
Indlela yokukhiya ezinjeni iwumphumela wemisipha ye-bulbospongiosus, efinyela eduze kwesisekelo somthondo wenja yesilisa ngesikhathi sokuqhanyelwa. Ukufinyela kwalo msipha kwandisa ingcindezi kumthondo futhi kubangele ukuthi ikhukhumale, ivalele ngaphakathi esithweni sangasese sowesifazane. Ubude belokhi bungahluka ukusuka emaminithini ambalwa kuye ngaphezu kwehora, kuye ngohlobo nobukhulu bezinja ezihilelekile.
Isikhathi Socansi Ema-Canines
Ubude besikhathi sokuya ocansini kuma-canines bungathatha noma yikuphi ukusuka kumasekhondi ambalwa kuya ngaphezu kwehora, kuye ngezici ezihlukahlukene njengobukhulu nohlobo lwezinja, ubudala nempilo yensikazi, kanye nokuzala kweduna. Ngalesi sikhathi, ipipi lenja yesilisa lingase lihlale limile ngokuphelele noma ngokwengxenye, futhi lezi zinja ezimbili zingase ziqhubeke nokuziphatha ngokocansi kuze kube yilapho kukhishwa ingidi.
Ukubaluleka Kokuhlangana Ubude Besikhathi Ekukhiqizeni Kabusha
Ubude besikhathi socansi kuma-canines budlala indima ebalulekile empumelelweni yokuzala. Uma ingidi iba yinde, aba makhulu amathuba okuzala, njengoba kuvumela isidoda sowesilisa ukuba sifinyelele emaqandeni esifazane futhi andise namathuba okukhulelwa. Ukwengeza, ukukhiya isikhathi eside kungasiza futhi ekuvuseni ukukhululwa kwe-oxytocin, ihomoni edlala indima ebalulekile ebudlelwaneni phakathi kwezinja zesilisa nezinsikazi.
Umthelela Wosayizi Nokuzalanisa Ekukhiqizeni I-Canine
Ubukhulu nohlobo kungaba nomthelela omkhulu ekuzalweni kwe-canine, njengoba izinja ezinkulu zingadinga isikhathi esengeziwe ukuze zikhiye futhi zizale ngempumelelo. Ukwengeza, izinhlobo ezithile zingase zibe sengozini yokuthola izinkinga zokuzala, njengokungazali noma ukuphazamiseka kwezakhi zofuzo, okungase kuthinte ikhono lazo lokuganana nokuzala.
Imvamisa Yokunamathelana Izigameko Ezinjeni
Ukuvama kokunamathelana kwezehlakalo ezinjeni kuvamile, ikakhulukazi phakathi nobude benkathi yokuzalanisa. Kodwa-ke, kubalulekile ukuqaphela ukuthi ukunamathelana akuhlali kuyinkomba yokukhwelana okuphumelelayo, njengoba izici ezifana nesikhathi, inzalo, nempilo zingaba neqhaza empumelelweni yokuzala.
Izinto Ezithinta Ukuzala Kwe-Canine
Izici eziningana zingathinta ukukhiqizwa kwe-canine, okuhlanganisa iminyaka, impilo, izakhi zofuzo, kanye nezici zemvelo ezifana nokucindezeleka noma ukudla okunomsoco. Ukuqonda lezi zici kungasiza ekuthuthukiseni amathuba okuzalanisa ngempumelelo nokuqinisekisa impilo kanye nokuphila kahle kwezinja ezihilelekile.
Isiphetho: Isayensi Ethakazelisayo ngemuva kwezinja ezinamathelana ndawonye
Isayensi yokuthi izinja zinamathelane ngesikhathi sokukhwelana kuyinqubo ethakazelisayo neyinkimbinkimbi ehilela izinguquko eziyinkimbinkimbi zamahomoni nezokuphila kuzo zombili izinja zesilisa nezinsikazi. Ukuqonda izici ezihlukahlukene ezithinta ukukhiqizwa kwe-canine kungasiza ekuthuthukiseni impumelelo yokuzalanisa nokuqinisekisa impilo kanye nokuphila kahle kwezinja ezihilelekile. Nakuba ukunamathelana kungase kubonakale kuxakile noma kuhlekisa, kuyingxenye ebalulekile yenqubo yokuzala futhi kuwubufakazi besayensi yezinto eziphilayo ezimangalisayo zalezi zilwane ezithandekayo.