RT Journal Article
T1 The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations
A1 Zarazaga Garcés, Luis Ángel
A1 Gatica Jorquera, María Carolina
A1 Guzmán Guerrero, José Luis
AB Non-esterified fatty acids (NEFAs) and Insulin-like growth factor-I (IGF-1) concentrations aremodified after the induction of a "male effect". The present study examined the effect of theintroduction of males into a group of females that were previously isolated from males, duringdifferent phases of the sexual cycle, to determine the changes to the NEFAs and IGF-1 concentrations.Sixty-four does were divided into six groups. The males were introduced with thefemales at different points after sponge removal. Introduction was carried out 48 h (n=10,Group 48H), 72 h (n=12, Group 72H), 4 days (n=10, Group 4 D), 13 days (n=10, Group 13 D) or18 days after sponge removal (n=10, Group 18 D), and a control group was implemented thathad no contact with males (n=12, Control Group). Plasma samples were taken every day todetermine daily progesterone (P4) and NEFAs concentrations, and every second day for IGF-1determination. No effects from the experimental groups were observed on the mean NEFAs orIGF-1 concentrations (p>.05). No differences between the time before male introduction andafter male introduction were observed on the NEFAs concentrations (p>.05) or IGF-1 concentrations(p>.05). On the whole, only differences were observed in the NEFAs concentrationsbetween the follicular and the luteal phases (9.48 ± 0.38 vs 8.15 ± 0.15mg/dL for follicular andluteal phases, respectively, p<.01). The results of the present experiment demonstrated that theintroduction of sexually active males at different moments of the oestrous cycle does not modifythe NEFAs or the IGF-1 concentrations.
YR 2021
FD 2021-04-30
LK http://hdl.handle.net/10272/19777
UL http://hdl.handle.net/10272/19777
LA eng
NO Luis Ángel Zarazaga, María Carolina Gatica & José Luis Guzmán (2021) The introduction of sexually active bucks at different moments of the oestrous cycle does not modify the NEFAs or the IGF-1 concentrations, Italian Journal of Animal Science, 20:1, 707-716, DOI:10.1080/1828051X.2021.1908182
NO This study was funded by Grant [AGL2016-75848-R] from MINECO-AEI-FEDER (Spain).
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026