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| Registros recuperados: 16 | |
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| MORAIS, M. C. C.; ARRAIS, A. M.; SILVA, N. C.; OLIVEIRA, M. E. F.; SOUZA-FABJAN, J. M. G.; FONSECA, J. F. da. |
| Animal preparation prior to artificial insemination (AI) in goats usually involves a combination of intravaginal devices containing progesterone/progestagens plus PGF2?? analogues and gonadotropins, being eCG the most used. The use of intravaginal devices soaked in synthetic progesterone analogues requires milk discard for 60 days. Progesterone soaked intravaginal devices, as synthetic ones, are associated with more animal handling and discomfort. In addition, it leads to environmental impacts because it generates more residues. On the other hand, eCG has presented continuous restriction due to animal welfare issues associated with its production (Vilanova et al., Animals, 9:1053, 2019) and it has been substituted by hCG for this purpose. This study tested... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Dairy goats; Animal reproduction; Estrus synchronization; Artificial insemination; Gonadotropins. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132676 |
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| Latronico,A.C.; Costa,E.M.F.; Domenice,S.; Correa,R.V.; Kohek,M.B.F.; Arnhold,I.J.P.; Mendonca,B.B.. |
| Several genes that influence the development and function of the hypothalamic-pituitary-gonadal-axis (HPG) have been identified. These genes encode an array of transcription factors, matrix proteins, hormones, receptors, and enzymes that are expressed at multiple levels of the HPG. We report the experience of a single Endocrinology Unit in the identification and characterization of naturally occurring mutations in families affected by HPG disorders, including forms of precocious puberty, hypogonadism and abnormal sexual development due to impaired gonadotropin function. Eight distinct genes implicated in HPG function were studied: KAL, SF1, DAX1, GnRH, GnRHR, FSHß, FSHR, and LHR. Most mutations identified in our cohort are described for the first time in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hypogonadism; Puberty; Gonadotropins; Genetic mutation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000100019 |
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| FONSECA, J. F. da; CRUZ, R. C.; MANCIO, A. B.; ESTEVES, L. V.; BRANDÃO, F. Z.; FACO, O.. |
| Este estudo avaliou os efeitos do uso de diferentes gonadotrofinas sobre a manifestação do estro, dinâmica ovulatória e características do muco cervical de cabras Toggenburg em anestro. As ovulações ocorreram na presença do muco 4. O FSH e a hCG, associados à progesterona, podem ser considerados para a indução de estro de cabras. O tipo de muco cervical está associado ao tamanho do folículo e à ovulação, podendo ser critério adicional na escolha do melhor momento para a inseminação artificial. |
| Tipo: Parte de livro |
Palavras-chave: Muco cervical; Induced ovulation; Oestrous cycle.; Caprino; Cabra; Reprodução animal; Indução; Ciclo estral; Gonadotrofina; Goats; Reproduction; Gonadotropins; Toggenburg.. |
| Ano: 2012 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1070471 |
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| Domínguez Islas, Manuel. |
| Se evaluó la incorporación del “efecto macho” a un protocolo de superovulación. Se utilizaron 20 ovejas de lana de la raza Suffolk, Hampshire y Dorset, de condición corporal (cc) 3.1 ± 0.4, con edad promedio de 3.9 ± 0.8 años, durante época de transición de anestro a temporada reproductiva en los meses de junio-julio del 2011. Se asignaron 10 ovejas de manera aleatoria en dos lotes. Los tratamientos fueron los siguientes: Tratamiento 1 (T1): se introdujo un CIDR (considerado día 0) a cada ovejas durante 9 días, 48 horas previas al retiro, se administro 500 μg de Cloprostenol, además de 300 UI de Gonadotropina coriónica equina (eCG) y 250 UI de gonadotropinas hipofisarias de cerdo cada 12 horas (48, 36, 24, 12, 0 previas al retiro y 12 h después del... |
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Palavras-chave: Efecto macho; Ovejas; Anestro; Gonadotropinas; Folículo; Ganadería; Maestría; Male effect; Ewes; Anestrus; Gonadotropins; Follicle. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1779 |
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| Kage,Devendra N; Malashetty,Vijaykumar B; Seetharam,Y. N; Suresh,P; Patil,Saraswati B. |
| Ethanol extract of whole plant of Trichosanthes cucumerina L. var. cucumerina was evaluated for antiovulatory activity in adult rats. The ethanol extract at the doses 200 and 400mg/kg body weight (orally) affected the normal estrous cycle showing a significant increase in estrus and metestrus phases and decrease in diestras and proestrus phases. The extract also significantly reduced the number of healthy follicles (Class I-Class VI) and corpora lutea and increased the number of regressing follicles (Stage IA, Stage IB, Stage IIA, and Stage IIB). The protein and glycogen content in the ovaries were significantly reduced in treated rats. The cholesterol level was significantly increased, whereas, the enzyme activities like 3b-HSD and 17b-HSD were... |
| Tipo: Journal article |
Palavras-chave: Trichosanthes cucumerina L. var. cucumerina; Antifertility; Folliculogenesis; Estrous cycle; Gonadotropins; 3 b-HSD; 17 b-HSD activity; Ovarian steroidogenesis. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100030 |
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| FONSECA, J. F. da; VERGANI, G. B.; CÔRTES, L. R.; RODRIGUES, J. N. D.; SIQUEIRA, L. G. B.; SOUZA-FABJAN, J. M.; OLIVEIRA, M. E. F.. |
| Abstract: The identification of ovarian follicular waves and associated hormonal milieux has revealed that dominant follicles of the ovulatory wave (OWDF) grow in a hormonal environment where there is an increasing predominance of estradiol, unlike first-wave dominant follicles (FWDF) and intermediate-wave dominant follicles (IWDF), which grow under increasing progesterone (P4) concentrations. The luteinizing hormone (LH) is considered the decisive gonadotropic hormone to direct whether a dominant follicle will (? LH) or will not (? LH) ovulate. Based on this, strategies have been developed to either increase endogenous LH (GnRH administration) or provide exogenous LH of porcine origin (pLH) or LH-like gonadotropins, such as human chorionic gonadotropin... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Onda folicular ovariana; CLa; HCG; Caprino; Ovino; Reprodução Animal; Eficiência Reprodutiva; Progesterona; Gonadotrofina; Corpo Lúteo; Ciclo Estral; Animal reproduction; Gonadotropins; Progesterone; Estrous cycle; Reproductive efficiency. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1140746 |
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| FONSECA, J. F. da; BRUSCHI, J. H.; ZAMBRINI, F. N.; DEMCZUK, E.; VIANA, J. H. M.; PALHÃO, M. P.. |
| The objective of this study was to evaluate lhe efficiency of two gonadotrophins in induction of estrus in dairy goats. A total of 47 dairy goats were randomly divided according to breed into two treatments (T1 and T2). In both treatments, goats received intravaginal sponges containing 60 mg medroxy-progesterone acetate for six days and sub- vulvar administration of 22.5 mg of d-cloprostenol at the time of sponge insertion. In TI (n=23) and T2 (n=24), animaIs received intramuscuIar administration of 200 lU and 250 lU of eCG and hCG, respectively. After sponge removal, goats were monitored twice daily (06:00 a.m. and 18:00 p.m.) with bucks. Animals were bred at lhe start of estrus and at each 12 hours interval until lhe end of estrus. Pregnancy was checked... |
| Tipo: Artigo de periódico |
Palavras-chave: Caprino leiteiro; Performance reprodutiva; Estro; Sincronização; ECG; HCG; Brasil; Minas Gerais.; Endocrinologia; Gonadotrofina; Reprodução Animal.; Cabra Leiteira; Gonadotropins; Estrus synchronization; Dairy goats; Brazil.. |
| Ano: 2005 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/531522 |
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| Armada-Dias,L.; Carvalho,J.J.; Breitenbach,M.M.D.; Franci,C.R.; Moura,E.G.. |
| The objective of the present study was to examine whether hypothyroidism affects the reproductive system of adult female rats by evaluating ovarian morphology, uterus weight and the changes in serum and pituitary concentrations of prolactin and gonadotropins. Three-month-old female rats were divided into three groups: control (N = 10), hypothyroid (N = 10), treated with 0.05% 6-propyl-2-thiouracil (PTU) in drinking water for 60 days, and T4-treated group (N = 10), receiving daily sc injections of L-thyroxine (0.8 µg/100 g body weight) during the last 10 days of the experiment. At the end of 50 days of hypothyroidism no hypothyroid animal showed a regular cycle, while 71% of controls as well as the T4-treated rats showed regular cycles. Corpora lutea,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hypothyroidism; Prolactin; Gonadotropins; Folliculogenesis; Estrous cycle. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900015 |
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| MAIA, A. L. R. e S.; FIGUEIRA, L. M.; ALVES, N. G.; BATISTA, R. I. T. P.; ARRAIS, A. M.; VERGANI, G. B.; PRATES, J. F.; FONSECA, J. F. da; SOUZA-FABJAN, J. M. G.. |
| Abstract: Multiple ovulation and embryo transfer (MOET) is a reproductive biotechnique that allows accelerated genetic improvement of the species. In ruminants, the variability of the superovulatory response is a limiting factor for MOET programs. In addition, specifically in sheep, it is difficult to conduct embryo recovery by transcervical via, due to the anatomy of the cervical canal. The dose of 100 mg pFSH appeared to be not sufficient to reach a high superovulation response while 200 mg resulted in good superovulatory response. [Coleta transcervical de embriões em ovelhas da raça Lacaune superovuladas com diferentes doses de FSH]. |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Reproductive biotechnology; Animal biotechnology; Biotecnologia da reprodução; Ovino; Ovelha; Reprodução Animal; Gonadotrofina; Sheep; Gonadotropins. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112222 |
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| Dias,Júlio César Oliveira; Veloso,Cristina Mattos; Santos,Madriano Christilis da Rocha; Oliveira,Carlos Thiago Silveira Alvim Mendes de; Silveira,Camila Oliveira; Iglesias,Erick; Maitan,Paula Piccolo; Sanglard,Letícia Maria Pereira. |
| ABSTRACT This study analyzed seasonal variations in the testes, the concentration of sex hormones, the parameters of fresh and thawed semen, and the sexual behavior of male Alpine goats from a temperate region in a tropical climate and possible interference with fertility. The maximum and minimum temperature and luminosity were recorded daily, while seminal, hormonal, and behavioral assessments were carried out every fortnight. The maximum and minimum temperature (°C) and luminosity (h) were recorded daily always at 17.00 h. The scrotal circumference (cm), testicular volume (mL), volume (mL), appearance (creamy, milky, aqueous) and coloration (white, white-yellowish, and yellowish) seminal, turbulence or mass movement (0 to 5), progressive spermatic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gonadotropins; Semen quality; Sexual behavior; Testosterone. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000300192 |
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| Alonso,Felipe; Cánepa,Maximiliano; Moreira,Renata Guimarães; Pandolfi,Matías. |
| In this work we describe for the first time the social and reproductive behavior of the Neotropical fish Cichlasoma dimerus (Heckel, 1840) [Perciformes: Cichlidae], endemic to the Paraná River basin, using a comprehensive-integral approach, including morphological and physiological features. This substrate breeding fish has biparental care of the fry and presents a dominance hierarchy that determines access to breeding territories among males, and to males with territories among females. Gregarious behavior associated with a pale body color, was observed before reproductive behaviors started. Afterwards, a dominance hierarchy was established through aggressive interactions. Territorial individuals had bright body color patterns and non territorial an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cichlidae; Cortisol; Gonadosomatic index; Gonadotropins; Somatolactin. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000300009 |
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| Registros recuperados: 16 | |
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