01140naa a2200217 a 450000100080000000500110000800800410001910000200006024501180008026000090019852005190020765000170072665000100074365000170075365300100077065300170078065300180079770000160081570000180083177300730084915167822025-06-30       1996    bl uuuu     u00u1 u    #d1 aNAGVI, S. M. K.  aEstrus synchronisation with progesterone impregnated vaginal sponges during summer season.h[electronic resource]  c1996  aEstrus in sheep is synchronised using either progestins such as naturally occurring progesterone or synthetic progestagens (Robinson, 1979; Mauleon, 1979) or two injections of prostaglanndin F2 alpha (Cognie and Mauleon, 1983; Gordon, 1983) separated by aninterval of 9-11 days. In the present study, locally made vaginal sponges impregnated with progesterone have been tested for their efficacy in synchronising estrus in native and crossbred ewes maintained in semi-arid tropical conditions during summer season.  aCiclo Estral  aOvino  aProgesterona  aEstro  aProgestageno  aSincronizacao1 aGULYANY, R.1 aPAREEK, S. R.  tThe Indian Journal of Animal Reproductiongv.17, n.1, p.15-16, 1996.