Effect of a single-reduced dose of equine follicular fluid on the timing of oestrus and reproductive performances in goats

To evaluate the use of equine follicular fluid (EFF) in a single-reduced dose on the synchronisation of oestrus in Boer×Nubian goats, the following experimental treatments were applied: Goats in group T1 (FGA, n=10) were synchronised in oestrus by intravaginal sponges impregnated with 45 mg FGA (Chronogest-MSD) for 12 days; group T2 (T2, FGA + eCG, n=16) goats were synchronised as in T1, plus 400 IU eCG, 48 h before sponge withdrawal; T3 goats (FGA + PGF2α, n=11) received the sponge as T1 plus an i.m. dose of PGF2α (1 ml, Prosolvin-MSD) 48 h before sponge withdrawal; T4 (FGA + EFF, n=19) animals received the sponge as T1 plus 2 ml EFF at sponge withdrawal and finally, group T5 (FGA + PGF2α + EFF, n=10) was like T3 plus 2 ml EFF at sponge withdrawal. Presentation: onset and duration of oestrus were recorded, and fertility, prolificacy and fecundity were calculated. All females showed oestrus. The onset of oestrus was different (P < 0.01), T4 and T5 goats showing a delay (50.5±4.9 and 48.2±2.0 h for T4 and ...