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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
19/07/2017 |
Data da última atualização: |
19/07/2017 |
Autoria: |
ROBINSON, T. J. |
Título: |
The seasonal nature of reproductive phenomena in the sheep. II. Variation in fertility following synchronization of oestrus. |
Ano de publicação: |
1971 |
Fonte/Imprenta: |
Journal of Reproduction and Development, v. 24, n. 1, p. 19-27, Jan. 1971. |
Idioma: |
Inglês |
Conteúdo: |
Five tests were conducted at intervals of 3 months to determine the seasonal variation in fertility following treatment with two types ofintravaginal sponges impregnated with 30 mg of a synthetic progestagen (SC-9880; Cronolone, Searle). Sponges were prepared with 5 ml ethanol to release 20 mg SC-9880 over a 16-day period or with 1 ml ethanol to release 10 mg. Ewes were inseminated twice, 48 and 64 hr after withdrawal of the sponges. There was a marked seasonal variation in all parameters associated with fertility and best results were obtained overall with the sponges releasing the higher dose. Treatment in the spring was followed by a low incidence of ovulation, a high incidence of 'silent heats' and few pregnancies following insemination (13\m=.\6%); most of the ewes that were not pregnant became anoestrous. Treatment in the autumn was followed by a high incidence of ovulation and oestrus, and a high pregnancy rate following a double insemination (82\m=.\5%),and few animals became anoestrous. |
Palavras-Chave: |
Drug effects; Flurogestone Acetate; Oestrous cycle; Time Factors. |
Thesaurus Nal: |
Analysis of Variance; Ovulation; Pharmacology; Pregnancy; Seasons; Sheep. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01724naa a2200241 a 4500 001 2072920 005 2017-07-19 008 1971 bl uuuu u00u1 u #d 100 1 $aROBINSON, T. J. 245 $aThe seasonal nature of reproductive phenomena in the sheep. II. Variation in fertility following synchronization of oestrus. 260 $c1971 520 $aFive tests were conducted at intervals of 3 months to determine the seasonal variation in fertility following treatment with two types ofintravaginal sponges impregnated with 30 mg of a synthetic progestagen (SC-9880; Cronolone, Searle). Sponges were prepared with 5 ml ethanol to release 20 mg SC-9880 over a 16-day period or with 1 ml ethanol to release 10 mg. Ewes were inseminated twice, 48 and 64 hr after withdrawal of the sponges. There was a marked seasonal variation in all parameters associated with fertility and best results were obtained overall with the sponges releasing the higher dose. Treatment in the spring was followed by a low incidence of ovulation, a high incidence of 'silent heats' and few pregnancies following insemination (13\m=.\6%); most of the ewes that were not pregnant became anoestrous. Treatment in the autumn was followed by a high incidence of ovulation and oestrus, and a high pregnancy rate following a double insemination (82\m=.\5%),and few animals became anoestrous. 650 $aAnalysis of Variance 650 $aOvulation 650 $aPharmacology 650 $aPregnancy 650 $aSeasons 650 $aSheep 653 $aDrug effects 653 $aFlurogestone Acetate 653 $aOestrous cycle 653 $aTime Factors 773 $tJournal of Reproduction and Development$gv. 24, n. 1, p. 19-27, Jan. 1971.
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Embrapa Caprinos e Ovinos (CNPC) |
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Registros recuperados : 11 | |
7. | | ROBINSON, T. K.; PINTO, C. E.; BRAMBILLA, D.; PEREZ, N. B.; NABINGER, C. Morphogenic analysis of three geographical populations of Eragrostis plana ness in South of Brazil. In: INTERNATIONAL RANGELAND CONGRESS, 9., 2011, Rosario. Diverse rangelands for a sustainable society. Buenos Aires: Fundación Argeninta, 2011. p. 205. 1 CD-ROM. Autores Susana Feldman; Oliva, Gabriel; Mónica Sacido.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Pecuária Sul. |
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10. | | MACEDO, T. A. de; MICHELON, M. F.; CARMINATTI, J. F.; GRILO, L.; RUFATO, A. de R.; RUFATO, L.; ROBINSON, T. L. Chill requirement and budburst uniformity on cultivar maxigala grafted on different rootstocks. In: ORCHAD SYSTEMS SYMPOSIUM, 11., 2016. Integrating Canopy, Rootstookhand Environment Physiology in Orchard Systems: Anais... .Bologna, 28/08 a 2/09 de 2016. p. 108.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Uva e Vinho. |
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11. | | MAGRO, M.; RUFATO, L.; SANDER, G. F.; SANDOS, A. M. dos; RUFATO, A. de R.; KRETZSCHMAR, A. A.; ROBINSON, T. L. Maturation behavior of Maxi Gala grafetd on two rootstocks by no Destructive Method. In: ORCHAD SYSTEMS SYMPOSIUM, 11., 2016. Integrating Canopy, Rootstookhand Environment Physiology in Orchard Systems: Anais... .Bologna, 28/08 a 2/09 de 2016. p. 107.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Uva e Vinho. |
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Registros recuperados : 11 | |
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