|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
19/11/2003 |
|
Data da última atualização: |
28/08/2023 |
|
Autoria: |
HUSEIN, M. Q.; BAILEY, M. T.; ABABNEH, M. M.; ROMANO, J. E.; CRABO, B. G.; WHEATON, J. E. |
|
Título: |
Effect of eCG the pregnancy rate of ewes transcervically inseminated with frozen-thawed semen outside the breeding season. |
|
Ano de publicação: |
1998 |
|
Fonte/Imprenta: |
Theriogenology, v. 49, n. 5, p. 997-1005, Apr. 1998. |
|
DOI: |
10.1016/s0093-691x(98)00048-x. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: An experiment was conducted to determine whether factors affecting pregnancy rate out-of-season are associated more with transcervical artificial insemination (T-AI) procedures or with the reproductive state of the ewe. Twenty Finncross ewes were treated with progesterone sponges, and at sponge removal (0 h) 10 ewes were treated with eCG. Blood samples were collected for LH and progesterone analyses, and follicular development was monitored using ultrasonography. Ewes were inseminated from 48 to 52 h with 200 million motile frozen-thawed spermatozoa. The incidence of estrus, LH surges and ovulation was greater (P < 0.01) and intervals to these responses were shorter (P < 0.01) in the eCG-treated ewes. The number of follicles > 5 mm was higher (P < 0.05) in eCG-treated than control ewes. Progesterone concentrations increased and remained elevated through Day 19 in 7 eCG-treated and in 1 control ewe, and these ewes were pregnant based upon ultrasonographic examination. The results demonstrate that the T-AI technique using frozen-thawed semen produces a relatively high (70%) pregnancy rate out-of-season. The pregnancy rate was found to reflect primarily the reproductive condition of the ewe. |
|
Palavras-Chave: |
Drug effects; eCG; Ovulation Induction; Semen Preservation. |
|
Thesaurus Nal: |
Chorionic gonadotropins; Luteinizing hormone; Ovarian follicles; Pharmacology; Pregnancy; Progesterone; Reproduction; Seasons; Sheep; Sperm motility; Spermatozoa; Ultrasonography. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 02329naa a2200385 a 4500
001 1530044
005 2023-08-28
008 1998 bl uuuu u00u1 u #d
024 7 $a10.1016/s0093-691x(98)00048-x.$2DOI
100 1 $aHUSEIN, M. Q.
245 $aEffect of eCG the pregnancy rate of ewes transcervically inseminated with frozen-thawed semen outside the breeding season.$h[electronic resource]
260 $c1998
520 $aAbstract: An experiment was conducted to determine whether factors affecting pregnancy rate out-of-season are associated more with transcervical artificial insemination (T-AI) procedures or with the reproductive state of the ewe. Twenty Finncross ewes were treated with progesterone sponges, and at sponge removal (0 h) 10 ewes were treated with eCG. Blood samples were collected for LH and progesterone analyses, and follicular development was monitored using ultrasonography. Ewes were inseminated from 48 to 52 h with 200 million motile frozen-thawed spermatozoa. The incidence of estrus, LH surges and ovulation was greater (P < 0.01) and intervals to these responses were shorter (P < 0.01) in the eCG-treated ewes. The number of follicles > 5 mm was higher (P < 0.05) in eCG-treated than control ewes. Progesterone concentrations increased and remained elevated through Day 19 in 7 eCG-treated and in 1 control ewe, and these ewes were pregnant based upon ultrasonographic examination. The results demonstrate that the T-AI technique using frozen-thawed semen produces a relatively high (70%) pregnancy rate out-of-season. The pregnancy rate was found to reflect primarily the reproductive condition of the ewe.
650 $aChorionic gonadotropins
650 $aLuteinizing hormone
650 $aOvarian follicles
650 $aPharmacology
650 $aPregnancy
650 $aProgesterone
650 $aReproduction
650 $aSeasons
650 $aSheep
650 $aSperm motility
650 $aSpermatozoa
650 $aUltrasonography
653 $aDrug effects
653 $aeCG
653 $aOvulation Induction
653 $aSemen Preservation
700 1 $aBAILEY, M. T.
700 1 $aABABNEH, M. M.
700 1 $aROMANO, J. E.
700 1 $aCRABO, B. G.
700 1 $aWHEATON, J. E.
773 $tTheriogenology$gv. 49, n. 5, p. 997-1005, Apr. 1998.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
