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2017, vol. 33, br. 4, str. 409-423
Uticaj starosti brojlerskih roditelja hibrida Cobb 500 i perioda skladištenja jaja na inkubacione pokazatelje
aUniverzitet u Beogradu, Poljoprivredni fakultet
bUniverzitet u Novom Sadu, Poljoprivredni fakultet
cHigher agriculture school of specialist studies, Šabac
dUniverzitet u Istočnom Sarajevu, Poljoprivredni fakultet, Republika Srpska, BiH

e-adresamrdimitrijevic@yahoo.com
Projekat:
Održiva konvencionalna i revitalizovana tradicionalna proizvodnja živinskog mesa i jaja sa dodatom vrednošću (MPNTR - 31033)

Sažetak
Osnovni cilj rada bio je ispitivanje uticaja starosti brojlerskih roditelja (SR) Hibrida Cobb 500 i perioda skladištenja jaja, odnosno starosti jaja (SJ) na oplođenost jaja i leženost pilića, kao i na embrionalni mortalitet pilića u toku inkubacionog perioda. U tri faze proizvodnog ciklusa, odnosno različite starosti brojlerskih roditelja (SR25ned., SR41ned. i SR58ned. ) i kod jaja skladištenih do 7 i preko 7 dana (SJ<7 i SJ>7), metodom slučajnog uzorka, odabrano je po 1.050 jaja (ukupno 6.300 jaja), u cilju utvrđivanja pomenutih reproduktivnih pokazatelja, težine pilića starih jedan dan i relativnog udela pileta u težini jajeta. Starost brojlerskih roditelja je uticala na oplođenost jaja jer je najviše fertilnih jaja bilo sredinom proizvodnog ciklusa (SR41 = 97,05%), zatim početkom (SR25 = 96,09%), a najmanji u završnoj fazi (SR58 = 93.00%) gajenja jata. Period skladištenja jaja nije imao uticaja na to koliko je jaja oplođeno, dok je starost brojlerskih roditelja i period skladištenja jaja bitno uticao na procenat izvodljivosti pilića, a samim tim i na embrionalni mortalitet u toku inkubacionog perioda. Najmanji ukupan embrionalni mortalitet(13,05%), bez obzira na period skladištenja, utvrđen je kod jaja poreklom SR41, znatno veći 15,87% kod SR58 i najveći 16,93% kod SR25. Zatim, produžavanje perioda skladištenja jaja, odnosno starost jaja (SJ<7 i SJ>7) je uticalo na povećanje ukupnog embrionalnog mortaliteta u sve tri faze proizvodnog ciklusa. Pored toga, starost brojlerskih roditelja je statistički značajno uticala na povećanje mase jaja (P<0,001) i izleženih pilića (P<0,001), dok se procenat pileta u masi jajeta smanjivao, a period skladištenja jaja, kod sve tri faze proizvodnog ciklusa, negativno je uticao na procenat pileta, tj. sa produžavanjem perioda skladištenja jaja, relativni udeo pileta u masi jajeta se smanjivao, posebno u početnoj (SR25) i završnoj fazi (SR58) proizvodnog ciklusa (P<0,001).
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O članku

jezik rada: engleski
vrsta rada: izvorni naučni članak
DOI: 10.2298/BAH1704409M
objavljen u SCIndeksu: 09.03.2018.
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