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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
15/02/1996 |
Data da última atualização: |
22/06/2023 |
Autoria: |
ROBERTS, A. J.; REEVES, J. J. |
Título: |
Reproductive and endocrine changes in ewes actively immunized against luteinizing hormone. |
Ano de publicação: |
1989 |
Fonte/Imprenta: |
Journal of Reproductive Immunology, v. 16, n. 2, p. 187-197, Nov. 1989. |
DOI: |
10.1016/0165-0378(89)90027-2. |
Idioma: |
Inglês |
Conteúdo: |
Abstract: The objective of this study was to examine reproductive and endocrine changes in ewes actively immunized against a conjugation of luteinizing hormone (LH) and ovalbumin (LH immunized n = 10) or ovalbumin alone (control; n = 10). Ewes were immunized at weeks 0, 3 and 5 of the 93-week study and exposed to a fertile ram during weeks 7-25 (first breeding season) and weeks 60-67 (second breeding season). Immunization against LH abolished estrus and prevented pregnancy in all but one LH immunized ewe during the two breeding seasons. Uterine weights of LH immunized ewes were lighter than those observed in control ewes while ovarian weights did not differ between the treatment groups. No differences were observed between basal circulating concentrations of LH measured by an in vitro bioassay for the two treatment groups. However, serum concentrations of immunological follicle stimulating hormone, and the number of medium sized ovarian follicles (4-6 mm) were increased in LH immunized ewes. It was concluded from this study that immunization against LH prevents ovulation presumably by blocking the preovulatory surge of LH and not altering basal concentration of LH. |
Palavras-Chave: |
Organ Size; Ovary; Reproduction control; Taxa de paricao. |
Thesagro: |
Endocrinologia; Ovino; Reprodução. |
Thesaurus Nal: |
Animal anatomy; Estrus; Females; Follicle-stimulating hormone; Histology; Immunology; Luteinizing hormone; Ovarian follicles; Parturition; Pituitary gland; Pregnancy; Reproduction; Sheep. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02256naa a2200385 a 4500 001 1522129 005 2023-06-22 008 1989 bl uuuu u00u1 u #d 024 7 $a10.1016/0165-0378(89)90027-2.$2DOI 100 1 $aROBERTS, A. J. 245 $aReproductive and endocrine changes in ewes actively immunized against luteinizing hormone.$h[electronic resource] 260 $c1989 520 $aAbstract: The objective of this study was to examine reproductive and endocrine changes in ewes actively immunized against a conjugation of luteinizing hormone (LH) and ovalbumin (LH immunized n = 10) or ovalbumin alone (control; n = 10). Ewes were immunized at weeks 0, 3 and 5 of the 93-week study and exposed to a fertile ram during weeks 7-25 (first breeding season) and weeks 60-67 (second breeding season). Immunization against LH abolished estrus and prevented pregnancy in all but one LH immunized ewe during the two breeding seasons. Uterine weights of LH immunized ewes were lighter than those observed in control ewes while ovarian weights did not differ between the treatment groups. No differences were observed between basal circulating concentrations of LH measured by an in vitro bioassay for the two treatment groups. However, serum concentrations of immunological follicle stimulating hormone, and the number of medium sized ovarian follicles (4-6 mm) were increased in LH immunized ewes. It was concluded from this study that immunization against LH prevents ovulation presumably by blocking the preovulatory surge of LH and not altering basal concentration of LH. 650 $aAnimal anatomy 650 $aEstrus 650 $aFemales 650 $aFollicle-stimulating hormone 650 $aHistology 650 $aImmunology 650 $aLuteinizing hormone 650 $aOvarian follicles 650 $aParturition 650 $aPituitary gland 650 $aPregnancy 650 $aReproduction 650 $aSheep 650 $aEndocrinologia 650 $aOvino 650 $aReprodução 653 $aOrgan Size 653 $aOvary 653 $aReproduction control 653 $aTaxa de paricao 700 1 $aREEVES, J. J. 773 $tJournal of Reproductive Immunology$gv. 16, n. 2, p. 187-197, Nov. 1989.
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Embrapa Caprinos e Ovinos (CNPC) |
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Registros recuperados : 2 | |
1. | | ROBERTS, A.; BOECKMAN, C. J.; MÜHL, M.; ROMEIS, J.; TEEM, J. L.; VALICENTE, F. H.; BROWN, J. K.; EDWARDS, M. G.; LEVINE, S. L.; MELNICK, R. L.; ROFRIGUES, T. B.; VÉLEZ, A. M.; ZHOU, X.; HELLMICH, R. L. Sublethal endpoints in non-target organism testing for insect-active GE crops. Frontiers in Bioengineering and Biotechnology, v. 8, article 556, 2020.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
Biblioteca(s): Embrapa Milho e Sorgo. |
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2. | | PATERSON, A. H.; WENDEL, J. F.; GUNDLACH, H.; GUO, H.; JENKINS, J.; JIN, D.; LLEWELLYN, D.; SHOWMAKER, K. C.; SHU, S.; UDALL, J.; YOO, M. J; BYERS, R.; CHEN, W.; DORON-FAIGENBOIM, A.; DUKE, M. V.; GONG, L.; GRIMWOOD, J.; GROVER, C.; GRUPP, K.; HU, G.; LEE, T.-H.; LI, J.; LIN, L.; LIU, T.; MARLER, B. S.; PAGE, J. T.; ROBERTS, A. W.; ROMANEL, E.; SANDERS, W. S.; SZADKOWSKI, E.; TAN, X.; TANG, H.; XU, C.; WANG, J.; WANG, Z.; ZHANG, D.; ZHANG, L.; ASHRAFI, H.; BEDON, F.; BOWERS, J. E.; BRUBAKER, C. L.; CHEE, P. W.; DAS, S.; GINGLE, A. R.; HAIGLER, C. H.; HARKER, D.; HOFFMANN, L. V.; HOVAV, R.; JONES, D. C.; LEMKI, C.; MANSOOR, S.; RAHMAN, M. U.; RAINVILLE, L. N.; RAMBANI, A.; REDDY, U. K.; RONG, J.-K.; SARANGA, Y.; SCHEFFLER, B. E.; STELLY, D. M.; TRIPLETT, B. A.; WAGHMARE, V. N.; WALFORD, S. A.; WRIGHT, R. J.; ZAKI, E. A.; ZHANG, T.; DENNIS, E. S.; MAYER, K. F. X.; PETERSON, D. G.; ROKHSAR, D. S.; WANG, X.; SCHMUTZ, J. Repeated polyploidization of Gossypium genomes and the evolution of spinnable cotton fibres. NATURE, v. 492, p. 423-427, 2012.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Algodão. |
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Registros recuperados : 2 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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