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  • Title: Effect of indomethacin and vasotocin on oviposition in the hen (Gallus domesticus).
    Author: Rzasa J, Paczoska-Eliasiewicz H.
    Journal: Acta Physiol Pol; 1989; 40(1):111-5. PubMed ID: 2603742.
    Abstract:
    The interrelationship between prostaglandins (PG) and vasotocin (AVT) in the oviposition of the domestic hen was investigated. Single or combined injections of indomethacin (IND), an inhibitor of PG synthesis, and AVT gave delay or induction of oviposition. Injection (i.m.) of IND (5 mg/kg) 5 h before oviposition resulted in 15.1 h (+/- 0.93) delay of oviposition. Injection (i.v.) of AVT (0.1 microgram/kg) 2.5 h before oviposition caused premature oviposition within a few minutes (3.1 +/- 0.2). Combined injection of IND and AVT at 5 h and 2.5 h, respectively, before oviposition caused the delay of oviposition (15.8 h +/- 0.8). The results indicate that IND blocked the induction of oviposition by AVT.
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