A nagy létszámú tejelő tehenészetekben alkalmazott korai vemhességvizsgálati módszerek és szerepük a termelés jövedelmezőségében
Irodalmi áttekintés
DOI:
https://doi.org/10.17205/SZIE.AWETH.2018.1.022Kulcsszavak:
vemhességvizsgálat, tejelő szarvasmarha, jövedelmezőségAbsztrakt
A szerzők ismertetik a tejelő tehenészetekben alkalmazott korai vemhességvizsgálati módszerek pontosságával összefüggő tényezőket, továbbá áttekintik a korai vemhességvizsgálatok termelési és gazdasági következményeiről szóló kutatások eredményeit. Szaporodásbiológiai ultrahangvizsgálatok, ill. vemhességi fehérjevizsgálatok révén egy héttel hamarabb pontos diagnózishoz lehet jutni a rektális tapintással végzett vizsgálathoz képest. Ezáltal csökkenthető a két termékenyítés közötti és az elléstől újravemhesülésig eltelt idő. Ugyanakkor a korai vemhességvizsgálatok hátránya, hogy nagyobb arányban figyeljük meg a természetes jelenségként előforduló vehemvesztést. Mivel a iatrogén vehemvesztés nagyobb gazdasági kárt okoz, mint a késedelmes újravemhesülés, fontos, hogy magas szenzitivitással és negatív prediktív értékkel rendelkező diagnosztikai módszert használjanak a tehenészetekben. A korai vemhességvizsgálatok által elérhető gazdasági előny nagyobb a gyengébb szaporodási eredményekkel rendelkező állományokban. Nagyobb üres naponkénti veszteség, ill. nagyobb állományméret esetén a korai vemhességvizsgálati módszerekbe történő befektetés gyorsabban megtérül.
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