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Biotechnology in Animal Husbandry
2015, vol. 31, br. 3, str. 397-405
jezik rada: engleski
vrsta rada: izvorni naučni članak
objavljeno: 03/03/2016
doi: 10.2298/BAH1503397S
Osobine ejakulata i reproduktivna efikasnost nerasta velikog jorkšira tokom iskorišćavanja
aUniverzitet u Beogradu, Poljoprivredni fakultet
bInstitut za stočarstvo, Beograd-Zemun
cInstitut za higijenu i tehnologiju mesa, Beograd

e-adresa: savic@agrif.bg.ac.rs

Projekat

Primena različitih odgajivačko-selekcijskih i biotehnoloških metoda u cilju oplemenjivanja svinja (MPNTR - 31081)

Sažetak

Osnovni cilj istraživanja bio je da se oceni varijabilnost osobina ejakulata: volumen ejakulata(VOL, ml), koncentracija sperme (CON, spermatozoida/ml), ukupan broj spermatozoida (NT) i broj proizvedenih doza (NPD) po ejakulatu pod uticajem nerasta, sezone i intervala izmedju dva skoka. Reproduktivna efikasnost nerasta analizirana je na osnovu procenta prašenja (FR). Istraživanjem je bio obuhvaćen 341 ejakulat sedam nerasta velikog jorkšira. Ocena uticaja je izvršena primenom GLM procedure u statističkom paketu SAS 9.1.3. Prosečne vrednosti VOL, CON, NT, NPD i FR bile su: 244,28 ml, 203,77x106 spermatozoida/ml, 43,48x109 spermatozoida, 17,39 doza i 67,58%. Osobine ejakulata varirale su pod uticajem sezone (P<0,01; P<0,001). Interval između dva skoka nije uticao jedino na varijabilnost CON. Razlika izmedju najboljeg i najlošijeg nerasta bila je 91,99x106 spermatozoida/ml ejakulata (P<0,001). Tokom letnjih meseci VOL ejakulata bio je najmanji (191,36 ml). Najveći NPD (19,04 doza) proizveden je tokom jesenjih meseci, a tokom istog perioda bila je i najveća koncentracija sperme (242,16x106 spermatozoida/ml). Bez obzira što razlike u procentu prašenja između nerasta nisu bile statistički značajne (P=0,0882), potrebno je vršiti rangiranje i pravovremeno identifikovati neraste sa procentom prašenja ispod proseka.

Ključne reči

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