Veterinarski arhiv, Vol. 77 No. 6, 2007.
Izvorni znanstveni članak
Peripheral serum progesterone profile in multiparous Nigerian Red Sokoto goats between day one and 30 postpartum
Mohammed Kawu
; Department of Physiology and Pharmacology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
Lawrence Eduvie
; National Animal Production Research Institute (NAPRI), Ahmadu Bello University, Shika, Zaria, Nigeria
Clarence Lakpini
; National Animal Production Research Institute (NAPRI), Ahmadu Bello University, Shika, Zaria, Nigeria
Joseph Ayo
; Department of Physiology and Pharmacology, Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria
Sažetak
Peripheral serum progesterone (P4) profile as an index of postpartum (pp) resumption of ovarian activity was determined in fifteen (15) multiparous Red Sokoto goats between day 1 and 30 pp. Serum P4 was determined on day 1, 5, 9, 13, 17, 21, 25 and 30 pp, that is, on every 4th day after the preceeding sampling and on the 5th day after day 25 sampling. A total of 115 serum samples were analysed by radioimmunoassay. The mean P4 concentration during the period of study was 0.19 ± 0.02 ng/mL. Two progestronic peaks were observed at day 5 and 17 pp. The highest P4 concentration occurred on day 17 pp (0.26 ± 0.07 ng/mL) and the lowest level on day 25 pp (<0.1 ng/mL). Progesterone levels rose from day 1 pp (0.18 ± 0.04 ng/mL) to a moderate peak at day 5 pp (0.25 ± 0.07 ng/mL). A sudden fall in P4 level occurred after day 5 pp and continued through days 9 and 13 pp (0.23 ± 0.06 and 0.21 ± 0.05 ng/mL, respectively). Thereafter, P4 concentrations rose to the highest level by day 17 pp (0.26 ± 0.07 ng/mL). From a second peak on day 17 pp, P4 levels fell progressively through day 21 pp (0.17 ± 0.06 ng/mL) to basal concentrations on day 25 pp (<0.1 ng/mL). On day 30 pp, when the experiment was terminated, P4 concentration rose again to 0.12 ± 0.03 ng/mL. The mean P4 concentrations between sampling days were not significantly different (P>0.05). It is concluded that ovarian activity in the early pp period is characterized by fluctuating short-term luteal phases and may resume as early as day 5 pp in multiparous Red Sokoto goat.
Ključne riječi
progesterone profile; postpartum; multiparous; Red Sokoto goat
Hrčak ID:
24359
URI
Datum izdavanja:
20.12.2007.
Posjeta: 1.678 *