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2020, vol. 36, br. 2, str. 205-214
Interrelacija između mase tela očeva, majki i njihovih jagnjadi u ranom stadijumu telesnog razvoja
aInstitut za stočarstvo, Beograd-Zemun
bRussian State Agrarian University-named K.A. Timiryazev, Moscow, Russia

e-adresaviolycaro@yahoo.com
Projekat:
451-03-68/2020-14

Sažetak
Istraživanja su obavljena kod ženke jagnjadi i njihovih roditelja u populaciji ovaca rase Mis. Sve životinje su odbijene u starosti od 90 dana. Ispitivane su komparativne mase telesnog razvoja jagnjadi i njihovih roditelja, da bi se ustanovila eventualna povezanost, a u cilju efikasnije selekcije u ranom uzrastu jedinki. Analiza je obuhvatila pored mase od rođenja do zalučenja, korelacije i regresiju mase između jagnjadi i njihovih roditelja. Majke i jagnjad su imali sličnu minimalnu telesnu masu sa 30 dana i pri odbijanju, ali maksimalna masa jagnjadi sa 30 dana bila je veća dok su kod odbijanja majke imale veću težinu. Može se primetiti da su prosečni telesni parametri ovnova bili veći, u poređenju sa masom jagnjadi, ali manji u komparaciji sa masom tela u razvojnom uzrastu majki. Koeficijent determinacije R2 varira od niskog do visokog, što ukazuje da na masu tela više utiču drugi faktori koje nismo razmatrali. Postoje značajne korelacije između telesne mase janjadi pri rođenju i mase tela ovnova, ali i ovaca majki pri njihovom rođenju. Rezultati su pokazali korelacije visokog značaja u pogledu telesne mase jagnjadi tokom 30 dana u poređenju sa majkama i niskog stepena u komparaciji sa očevima. Postoji pozitivna, ali ne značajna korelacije između telesne mase jagnjadi pri odbijanju i mase tela očeva prilikom njihovog odbijanja. Mase tela jagnjadi pri odbijanju i mase majki pri odbijanju su jako i pozitivno povezane. Ova istraživanja su retka i škrta u literaturi, ali imaju veliki praktični značaj za selekciju budućih priplodnih ovaca u ranom uzrastu, što je večiti cilj u oplemenjivanju domaćih životinja.
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.2298/BAH2002205C
objavljen u SCIndeksu: 26.07.2020.
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