Progestagen
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Vitrified embryo transfer in Merino sheep under extensive conditions
Abstract The aim was to evaluate pregnancy success after transfer of embryos vitrified in micropipette tips in Merino sheep under extensive conditions. A second objective was to evaluate the influence of embryo stage in such pregnancy rate. One hundred and twenty-seven embryos were rewarmed and transferred into recipient ewes. On rewarming, the embryos were
Anim. Reprod.. Publicado em: 25/11/2019
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2. Aspectos epidemiológicos da neoplasia mamária canina / Epidemiological aspects of canine mammary tumor
Tumor de mama é a neoplasia mais freqüente em cadelas, entretanto, há controvérsias sobre os fatores que influenciam o desenvolvimento do tumor. O objetivo deste trabalho foi estudar o perfil das cadelas com tumor de mama atendidas no Hospital de Clínicas Veterinárias da Universidade Federal do Rio Grande do Sul (HCV-UFRGS). Foram coletados os dados de
Publicado em: 2010
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3. Profiles of glycosaminoglycans in the uterus of adult ooforectomized rats treated with estrogen and/or progestagen / Perfil dos glicosaminoglicanos no útero de ratas ooforectomizadas e tratadas com estrogênios e/ou progestagênios
Objetivo: Avaliar os efeitos dos estrogênios conjugados eqüinos (ECE), isolados ou associados ao acetato de medroxiprogesterona (AMP) sobre os glicosaminoglicanos do colo e do corno do útero de ratas. Métodos: 40 ratas adultas, após 30 dias de ooforectomia foram distribuídas em quatro grupos: GI - controle (veículo); GII - ECE (50 g/Kg, por dia); GIII
Publicado em: 2010
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4. Non-invasive endocrine monitoring using fecal steroid analysis: opportunities and challenges
During the past two decades, techniques for the non-invasive analysis of fecal steroid metabolites (estrogen, androgen, progestagen and glucocorticoid metabolites) have been developed. These techniques have been used for research with mammals, birds, reptiles, and to a lesser extent in fish; species studied included domestic and laboratory animals, as well a
Revista Brasileira de Zootecnia. Publicado em: 2007-07
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5. Perfil analítico de estrógenos e progestinas em diferentes matrizes biológicas na espécie ovina (Ovis aires) / Analytic profile of estrogens and progestins in different biological matrixes in the ovine (Ovis aires)
The aim of the present work was evaluate the hormonal profiles of progestins and estrogens in blood, feces, urine and saliva during the induced estral cycle in ovine. Samples were collected daily a 60-day period from eight adult (n=8) cycling ewes. The animals were previously submitted to a protocol of estrus induction and synchronization for twelve days. In
Publicado em: 2007
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6. HORMONAL STRATEGIES FOR ESTRUS INDUCTION/SYNCHRONIZATION IN 12-14 MONTHS OLD BEEF HEIFERS / ESTRATÉGIAS HORMONAIS DE INDUÇÃO/SINCRONIZAÇÃO DE ESTRO EM NOVILHAS DE CORTE ENTRE 12 E 14 MESES DE IDADE
The aim of this study was to develop and evaluate two protocols for estrus synchronization and/or induction in 12-14 months old beef heifers, which would allow the use of timed artificial insemination (TAI) after a short period of estrus detection (48h). The first experiment consisted of evaluating whether eCG was a necessary component in the BioRep system t
Publicado em: 2007
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7. Efeito da sincronizaÃÃo e induÃÃo do estro e do desmame precoce sobre a performance reprodutiva de ovelhas deslanadas e no desempenho dos cordeiros. / Effect of timing and induction of estrus and early weaning on the reproductive performance of ewes deslanadas and performance of lambs.
O objetivo do trabalho foi avaliar o efeito da sincronizaÃÃo/induÃÃo do estro e do desmame precoce sobre a performance reprodutiva de ovelhas deslanadas e no desempenho dos cordeiros. Para atingir o objetivo foram desenvolvidos dois experimentos. O experimento 1 testou dois mÃtodos de sincronizaÃÃo do estro, o mÃtodo convencional com uso de progestÃ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2006
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8. Efeito do estradiol associado ao progestágeno sobre a taxa de sincronização do estro, de ovulação e prenhez em vacas zebuínas lactantes no pós-parto / Effect of estradiol plus progestagen on estrus and ovulation synchronization, and pregnancy rates in zebu lactating cows at postpartum
The objective of this research was to evaluate the effect of estradiol benzoate plus CIDR on estrus and ovulation synchronization and pregnancy rates in zebu lactating cows at postpartum. Two hundred and twenty six zebu cows, were randomly assigned to three different treatments: MN (n=77) - cows were submitted to a breeding season of 21 days, cows of the T1
Publicado em: 2006
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9. Avaliação da reutilização de implantes contendo progestágenos para controle farmacológico do ciclo estral e ovulação em vacas de corte. / Evaluation of progestagen implants reutilization on pharmacological control of estrus cycle and ovulation in beef cows.
Two-hundred and twenty-one (78 suckling 40 to 90 days) Nelore (Bos taurus indicus) X Charolais (Bos taurus taurus) cows were used to evaluate the reutilization of progestagen implants to control pharmacologically the estrus cycle and ovulation. Cows were randomly assigned to one of three protocols for estrous synchronization and artificial insemination in
Publicado em: 2002
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10. Oral contraceptives and tryptophan metabolism: Effects of oestrogen in low dose combined with a progestagen and of a low-dose progestagen (megestrol acetate) given alone
The effect upon tryptophan metabolism of the use of combined oestrogen-progestagen oral contraceptives containing a low (0·05 mg) dose of oestrogen, or of the continuous administration of megestrol acetate, has been studied by determining the excretion of tryptophan metabolites in urine collected after a 2 g oral dose of the amino acid.
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11. Synthetic progestagen-oestrogen preparations and endometrial morphology
19-nor steroids in high and medium dosage in continuous or cyclic combined regimens with oestrogen produce an endometrium characterized by hyperinvoluted glands, a prominent predecidual reaction, suppressed arterioles, and dilated venules. When daily dosage is decreased to 2·0 mg. or less, the endometrium is composed of hyperinvoluted glands in an inert str
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12. Complete amino acid sequence of human placental protein 14: a progesterone-regulated uterine protein homologous to beta-lactoglobulins.
Placental protein 14 (PP14), also known as progestagen-dependent endometrial protein and pregnancy-associated endometrial alpha 2-globulin, is synthesized by the human secretory endometrium and decidua. We have isolated from a human decidual cDNA library clones corresponding to PP14 and deduced its entire amino acid sequence. PP14 contains 180 amino acids, 1