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Intravaginal impedance and sexual behavior of ovariectomized goats given estrogen alone or in combination with progesterone
Year:
2007
Source of publication :
Journal of Animal Science
Authors :
Lehrer, A. R.
;
.
Volume :
85
Co-Authors:
Imwalle, D.B., Department of Animal Sciences, Rutgers, State University of New Jersey, New Brunswick 08901, United States
Lehrer, A.R., Institute of Animal Science, Volcani Center, Agricultural Research Organization, Bet-Dagan 50250, Israel
Katz, L.S., Department of Animal Sciences, Rutgers, State University of New Jersey, New Brunswick 08901, United States
Facilitators :
From page:
1908
To page:
1913
(
Total pages:
6
)
Abstract:
Intravaginal impedance (IVI) fluctuates during the goat estrous cycle. To understand which ovarian steroids are responsible for IVI changes and whether IVI variations are associated with precopulatory and copulatory behaviors, 8 ovariectomized females were assigned to 4 treatments in a 4 × 4 Latin square replicated over four 8-d periods. The treatments were as follows: progesterone plus estradiol-17β (P4 + E2), oil plus estradiol-17β (E2), progesterone plus oil (P4), or oil (OIL). Daily IVI measurements at the vaginocervical junction were taken at 1 and 70 KHz. Progesterone was given on d 2 and 3. Estradiol was given in the evening of d 5. On d 1 to 8, goats were group-exposed to a sexually experienced male and observed for the expression of sexual behaviors. On d 6 and 7, IVI was less when goats received P4 + E2 or E2 compared with goats given P4 or OIL (P < 0.05). Impedance measured at 1 kHz tended to remain lower on d 8 in P4 + E2-treated females compared with those given P4 or OIL (P < 0.055). Like previous results, P4 + E2 or E2 treatment induced behavioral estrus; 5 of 8 P4 + E2-treated and 5 of 8 E2-treated females were sexually receptive on d 6. On d 7, although IVI remained low and 2 of 8 P4 + E2-treated goats and 4 of 8 E2-treated goats remained sexually receptive, no additional females were in estrus. No IVI decreases and no estrous behavior were observed in goats given P4 or OIL. This experiment demonstrated that E2 initiates the periestrous drop in IVI, and P4 may delay baseline return. ©2007 American Society of Animal Science. All rights reserved.
Note:
Related Files :
Animal
Animals
drug effect
Female
gestagen
Goat
goats
Male
ovariectomy
Sexual Behavior, Animal
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More details
DOI :
10.2527/jas.2007-0096
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29623
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:48
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Scientific Publication
Intravaginal impedance and sexual behavior of ovariectomized goats given estrogen alone or in combination with progesterone
85
Imwalle, D.B., Department of Animal Sciences, Rutgers, State University of New Jersey, New Brunswick 08901, United States
Lehrer, A.R., Institute of Animal Science, Volcani Center, Agricultural Research Organization, Bet-Dagan 50250, Israel
Katz, L.S., Department of Animal Sciences, Rutgers, State University of New Jersey, New Brunswick 08901, United States
Intravaginal impedance and sexual behavior of ovariectomized goats given estrogen alone or in combination with progesterone
Intravaginal impedance (IVI) fluctuates during the goat estrous cycle. To understand which ovarian steroids are responsible for IVI changes and whether IVI variations are associated with precopulatory and copulatory behaviors, 8 ovariectomized females were assigned to 4 treatments in a 4 × 4 Latin square replicated over four 8-d periods. The treatments were as follows: progesterone plus estradiol-17β (P4 + E2), oil plus estradiol-17β (E2), progesterone plus oil (P4), or oil (OIL). Daily IVI measurements at the vaginocervical junction were taken at 1 and 70 KHz. Progesterone was given on d 2 and 3. Estradiol was given in the evening of d 5. On d 1 to 8, goats were group-exposed to a sexually experienced male and observed for the expression of sexual behaviors. On d 6 and 7, IVI was less when goats received P4 + E2 or E2 compared with goats given P4 or OIL (P < 0.05). Impedance measured at 1 kHz tended to remain lower on d 8 in P4 + E2-treated females compared with those given P4 or OIL (P < 0.055). Like previous results, P4 + E2 or E2 treatment induced behavioral estrus; 5 of 8 P4 + E2-treated and 5 of 8 E2-treated females were sexually receptive on d 6. On d 7, although IVI remained low and 2 of 8 P4 + E2-treated goats and 4 of 8 E2-treated goats remained sexually receptive, no additional females were in estrus. No IVI decreases and no estrous behavior were observed in goats given P4 or OIL. This experiment demonstrated that E2 initiates the periestrous drop in IVI, and P4 may delay baseline return. ©2007 American Society of Animal Science. All rights reserved.
Scientific Publication
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