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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
20/07/2017 |
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Data da última atualização: |
20/07/2017 |
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Autoria: |
ALLISON, A. J.; ROBINSON, T. J. |
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Título: |
The effect of dose level of intravaginal progestagen on sperm transport, fertilization and lambing in the cyclic Merino ewe. |
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Ano de publicação: |
1970 |
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Fonte/Imprenta: |
Journal of Reproduction and Development, v. 23, n. 3, p. 515-531, Aug. 1970. |
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Idioma: |
Inglês |
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Conteúdo: |
The numbers of spermatozoa recovered from the Fallopian tubes 24 hr after insemination, fertilization rate and lambing were measured in one group of 120 normal cyclic ewes and in three groups of 120 animals which had been synchronized with intravaginal sponges impregnated with 10, 30 or 90 mg Cronolone (Searle). Half of each group received 500 i.u. pmsg. Results were as follows: Cronolone (mg) 0 IO 30 90 Numbers of tubai spermatozoa 2466 632 1900 2329 0 versus 10, 30, 90; P< 0-1 Lambing percentage 64-0 55-2 57-6 58-3 NS PMSG had no apparent effect on any one of the three parameters. Increasing dose of progestagen significantly increased the incidence of oestrus and was associated with an increasing ovarian response to pmsg. There was no evidence that embryonic mortality was greater in progestagen-treated than in untreated ewes. Considering all parameters of fertility, ewes treated with intravaginal sponges containing 10 mg Cronolone yielded the fewest spermatozoa, the lowest number and percentage of fertilized eggs and the lowest percentage of lambing ewes. |
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Palavras-Chave: |
Dosage effects; Drug effects; Fertility; Fertilization; Flurogestone Acetate; Oestrous cycle; Pregnanes; Progestogens. |
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Thesaurus Nal: |
Artificial insemination; Fluorine; Laparotomy; Pregnancy; Reproduction; Sheep; Spermatozoa. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01968naa a2200313 a 4500
001 2072948
005 2017-07-20
008 1970 bl uuuu u00u1 u #d
100 1 $aALLISON, A. J.
245 $aThe effect of dose level of intravaginal progestagen on sperm transport, fertilization and lambing in the cyclic Merino ewe.
260 $c1970
520 $aThe numbers of spermatozoa recovered from the Fallopian tubes 24 hr after insemination, fertilization rate and lambing were measured in one group of 120 normal cyclic ewes and in three groups of 120 animals which had been synchronized with intravaginal sponges impregnated with 10, 30 or 90 mg Cronolone (Searle). Half of each group received 500 i.u. pmsg. Results were as follows: Cronolone (mg) 0 IO 30 90 Numbers of tubai spermatozoa 2466 632 1900 2329 0 versus 10, 30, 90; P< 0-1 Lambing percentage 64-0 55-2 57-6 58-3 NS PMSG had no apparent effect on any one of the three parameters. Increasing dose of progestagen significantly increased the incidence of oestrus and was associated with an increasing ovarian response to pmsg. There was no evidence that embryonic mortality was greater in progestagen-treated than in untreated ewes. Considering all parameters of fertility, ewes treated with intravaginal sponges containing 10 mg Cronolone yielded the fewest spermatozoa, the lowest number and percentage of fertilized eggs and the lowest percentage of lambing ewes.
650 $aArtificial insemination
650 $aFluorine
650 $aLaparotomy
650 $aPregnancy
650 $aReproduction
650 $aSheep
650 $aSpermatozoa
653 $aDosage effects
653 $aDrug effects
653 $aFertility
653 $aFertilization
653 $aFlurogestone Acetate
653 $aOestrous cycle
653 $aPregnanes
653 $aProgestogens
700 1 $aROBINSON, T. J.
773 $tJournal of Reproduction and Development$gv. 23, n. 3, p. 515-531, Aug. 1970.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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