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	Provedor de dados Braz. J. Vet. Res. Anim. Sci. (2) Autor GARDÓN,Juan Carlos (2) RAMOS,Guillermo (2) SIMONETTI,Laura (2) Palavra-chave Estrus synchronization (2) Ewes (2) Medroxyprogesterone acetate (2) Fertility (1) PMSG (1) Sponges (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 1999 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Residual levels on medroxyprogesterone acetate (MAP) impregnated sponges after estrus synchronization treatment in cyclic ewes Braz. J. Vet. Res. Anim. Sci. SIMONETTI,Laura; GARDÓN,Juan Carlos; RAMOS,Guillermo. A pool of polyurethane sponges impregnated with medroxyprogesterone acetate (MAP) was prepared. Real level of progestagen on sponges was checked prior to sponge treatment insertion. During spring a total of 126 cyclic Merino ewes were intravaginally treated with MAP-impregnated pessaries for the synchronization of estrus. After 14 days treatment, sponges were removed. Estrus detection was performed with vasectomized rams. Ewes were inspected for the presence of marks twice a day. Ewes in estrus were artificially inseminated with fresh diluted semen containing a dose of 300x10(6) total sperm. Artificial insemination was performed 12 hours after estrus presentation. Residual levels of MAP (RMAP) on removed sponges were measured by spectrophotometry at 241 nM... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ewes; Estrus synchronization; Medroxyprogesterone acetate; Fertility. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961999000500003 Estrus presentation and distribution in ewes treated with intravaginal sponges impregnated with medroxyprogesterone acetate (MAP) in combination with pregnant mare serum gonadotropin (PMSG) Braz. J. Vet. Res. Anim. Sci. SIMONETTI,Laura; RAMOS,Guillermo; GARDÓN,Juan Carlos. The objectives of this study were: 1) to determine estrus presentation and distribution following a conventional method of estrus synchronization (progestagen-PMSG treatment) in an ewe herd and 2) to analyze estrus presentation and distribution in adult ewes and ewe lambs. During spring a total of 300 cyclic Merino ewes, including 231 adult ewes and 69 ewe lambs were treated with intravaginal sponges impregnated with 60 mg medroxyprogesterone acetate (MAP). After 14 days sponges were removed and 375 IU pregnant mare serum gonadotropin (PMSG) were administered i.m. Estrus detection was performed with vasectomized rams. Ewes were inspected for the presence of marks at 4-hours intervals. Sponge losses, estrus synchronization and distribution were analyzed for... Tipo: Info:eu-repo/semantics/article Palavras-chave: Ewes; Estrus synchronization; Medroxyprogesterone acetate; PMSG; Sponges. Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961999000500002 Registros recuperados: 2 Primeira ... 1 ... Última

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