A fényperiódus és a melatonin szerepe emlősök szezonális bioritmusában
Irodalmi áttekintés
Kulcsszavak:
fotoperiódus, melatonin, szaporodás, szőrfejlődés, gyapjúAbsztrakt
Természetes fotoperiódusban termelő számos háziállat (szőr-, gyapjú- és prémtermelő fajok, ill. fajták) szaporodása és szőrfejlődése periodikusan váltakozik. Megfelelő módon alkalmazott fényprogrammal, ill. melatoninkezeléssel ezeknek a fajoknak a termelése kevésbé függ a külső körülményektől. Nemcsak a fajlagos állati termék mennyisége (pl. gyapjú) növelhető, hanem lecsökkenthető a nevelési idő (prémesállatok), miközben a minőségi tulajdonságok nem romlanak. Ezen eljárások alkalmazásának fontos területe lehet a jövőben (nemesítési szempontból is) a mesterséges termékenyítés (pl. prémesállatoknál). A melatoninkezelések során kapott eredmények jól hasznosíthatók a biostimulációs eljárások kidolgozásához.
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