The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations

Non-esterified fatty acids (NEFAs) and Insulin-like growth factor-I (IGF-1) concentrations are modified after the induction of a "male effect". The present study examined effect introduction males into group females that were previously isolated from males, during different phases sexual cycle, to determine changes NEFAs IGF-1 concentrations. Sixty-four does divided six groups. introduced with at points sponge removal. Introduction was carried out 48 h (n = 10, Group 48H), 72 12, 72H), 4 days D), 13 D) or 18 removal control implemented had no contact Control Group). Plasma samples taken every day daily progesterone (P4) concentrations, second for determination. No effects experimental groups observed on mean (p > .05). differences between time before male .05) On whole, only in follicular luteal (9.48 ± 0.38 vs 8.15 0.15 mg/dL phases, respectively, p < .01). results experiment demonstrated sexually active moments oestrous cycle not modify concentrations.HighlightsResults shows did vary males.Results increases phase.Results cycle.