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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
03/10/2008 |
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Data da última atualização: |
22/06/2023 |
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Autoria: |
DAVIS, S. R.; SMITH, J. F.; GLUCKMAN, P. D. |
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Afiliação: |
Ruakura Agricultural Centre, Private Bag, Hamilton, New Zealand. Department of Paediatrics, School of Medicine, University of Auckland, Auckland, New Zealand. |
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Título: |
Effects of growth hormone injections on ovulation rate in ewes. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Reproduction, Fertility and Development, v. 2, n. 2, p. 173-178, 1990. |
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DOI: |
10.1071/rd9900173. |
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Idioma: |
Inglês |
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Conteúdo: |
Coopworth ewes were either treated with 5 mg recombinant-derived bovine growth hormone per day for each day of the oestrous cycle or were untreated. Ovulation rates at the pre-treatment, post-treatment and a subsequent oestrus were determined by endoscopy. These were 1.34, 1.51, 1.38 for the treated ewes and 1.32, 1.43, 1.39 for the control ewes. The ovulation rate post-treatment was significantly higher than for the other two cycles in the treated ewes but it was not significantly different from the post-treatment value of the control ewes. Plasma concentrations of insulin-like growth factor-I (IGF-I) were elevated during treatment (90-130 nmol L-1) compared with concentrations of 25-50 nmol L-1 in the control ewes. No relationship was found between plasma IGF-I concentration and ovulation rate. Injection of ewes grazing ryegrass/white clover pasture with bovine growth hormone did not result in increased ovulation rate. |
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Palavras-Chave: |
Drug effects; Hormônio de crescimento; Taxa de ovulação. |
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Thesagro: |
Ovino; Reprodução Animal. |
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Thesaurus Nal: |
Estrus; Metabolism; Ovulation; Pharmacology; Reproduction; Sheep. |
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Categoria do assunto: |
-- |
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Marc: |
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001 1516220
005 2023-06-22
008 1990 bl uuuu u00u1 u #d
024 7 $a10.1071/rd9900173.$2DOI
100 1 $aDAVIS, S. R.
245 $aEffects of growth hormone injections on ovulation rate in ewes.$h[electronic resource]
260 $c1990
520 $aCoopworth ewes were either treated with 5 mg recombinant-derived bovine growth hormone per day for each day of the oestrous cycle or were untreated. Ovulation rates at the pre-treatment, post-treatment and a subsequent oestrus were determined by endoscopy. These were 1.34, 1.51, 1.38 for the treated ewes and 1.32, 1.43, 1.39 for the control ewes. The ovulation rate post-treatment was significantly higher than for the other two cycles in the treated ewes but it was not significantly different from the post-treatment value of the control ewes. Plasma concentrations of insulin-like growth factor-I (IGF-I) were elevated during treatment (90-130 nmol L-1) compared with concentrations of 25-50 nmol L-1 in the control ewes. No relationship was found between plasma IGF-I concentration and ovulation rate. Injection of ewes grazing ryegrass/white clover pasture with bovine growth hormone did not result in increased ovulation rate.
650 $aEstrus
650 $aMetabolism
650 $aOvulation
650 $aPharmacology
650 $aReproduction
650 $aSheep
650 $aOvino
650 $aReprodução Animal
653 $aDrug effects
653 $aHormônio de crescimento
653 $aTaxa de ovulação
700 1 $aSMITH, J. F.
700 1 $aGLUCKMAN, P. D.
773 $tReproduction, Fertility and Development$gv. 2, n. 2, p. 173-178, 1990.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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