|
KMID : 0900920010250020155
|
|
Korean journal of Animal Reproduction
2001 Volume.25 No. 2 p.155 ~ p.162
|
|
|
The Effects of Prostaglandin F_{2alpha}(PGF_{2alpha}) Treatment on Hormone Concentrations and Follicular Development in Early Postpartum Korean Native Goats
|
|
Ham Tae-Su
|
|
|
Abstract
|
|
|
|
These experiments were conducted to evaluate the effects of the administration of exogenous PG F_{2{alpha}} on hormone concentrations and follicular development in early postpartum(pp) Korean native goats. 1. Plasma PG F_{2{alpha}} concentrations in PG F_{2{alpha}} treated goals showed a gradual increase from a low on day 2 (GR-1 : 10 day-treatment group: 6.35pm0.5 and GR-2; 4 day-treatment group: 0.22pm0.2 pg/mell, respectively) to reach a peak of 21.18pm1.6 or 4.21 pm0.4 pg/mell on day 4 after treatment of PG F_{2{alpha}}. 2. Plasma PG F_{2{alpha}} concentrations in GR-1 goats averaged 9.08 pm1.2 pg/mell compared with 5.44pm 1.8 pg/mell in GR-2 goats the day before treatment of PG F_{2{alpha}}. Mean PG F_{2{alpha}} concentrations thereafter remained low during the treatment period but PG F_{2{alpha}} concentrations did not differ between the two group. 3. Plasma concentrations of estradiol-17 beta (E,) in PG F_{2{alpha}} - treated group were decreased gradually until 2 days after PG F_{2{alpha}} treatment but mean E_2 concentrations began to increase on 3 days and were Inaximal on the 4 days after treatment. 4. Plasma lulenizing hormone (LH) concentrations in PG F_{2{alpha}} - treated goats were slightly higher than in controls but mean LH concentrations did not differ between the two treatment groups. 5. Plasma prolactin (PRL) concentrations were suppressed in both GR-1(10 day-treatment group) and GR-2(4 day-treatment group) goats compared to saline controls but mean PRL concentrations remained lower in PG F_{2{alpha}} treated animals during post-treatment period. 6. The mean number of small and medium follicles present when PG F_{2{alpha}} was administrated was similar in all does but the increase in number of large follicles(geq4mm) tended to be higher in PG F_{2{alpha}} treated group than controls. These results suggest that concentrations of PG F_{2{alpha}} and estradiol-17beta were positively correlared with follicular diameter. We conclude that PG F_{2{alpha}} treatment stimulates follicular development similarly in both GR-1 and GR-2 group.
|
|
|
KEYWORD
|
|
|
Postpartum, PGF_{2alpha}, Ovaries, Follicles, Goats
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|
|