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| Registros recuperados: 19 | |
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| Ignácio,A.R.; Müller,Y.M.R.; Carvalho,M.S.L.; Nazari,E.M.. |
| The distribution, morphology and morphometry of microglial cells in the chick cerebral hemispheres from embryonic day 4 (E4) to the first neonatal day (P1) were studied by histochemical labeling with a tomato (Lycopersicon esculentum) lectin. The histochemical analysis revealed lectin-reactive cells in the nervous parenchyma on day E4. Between E4 (5.7 ± 1.35 mm length) and E17 (8.25 ± 1.2 mm length), the lectin-reactive cells were identified as ameboid microglia and observed starting from the subventricular layer, distributed throughout the mantle layer and in the proximity of the blood vessels. After day E13, the lectin-reactive cells exhibited elongated forms with small branched processes, and were considered primitive ramified microglia. Later, between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microglia; Cerebral hemispheres; Embryos; Neonatal chicks; Gallus domesticus; Tomato lectin. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001100008 |
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| Oro,CS; De Souza,FEZ; Rodrigues,WC; Oro,JS; Guirro,ECBP. |
| ABSTRACT About 33.3% of chicken life is conditioned by the result of embryonic development. Therefore, understanding and improving the early phase of the broiler’s life is critical to guarantee their well-being. Thus, the objective of this research was to evaluate the relationship between the breeder’s age, breed and the incubator types on quality and animal welfare in the hatchery. The experimental design was completely randomized in a 2 x 2 x 3 factorial arrangement (incubator, breed and age), with 12 treatments and 6 replicates each. The eggs derived of Cobb 500 and Ross’s breeders at the beginning of the laying period, middle age and at the end of the laying period. It is concluded that the size of the eggs is related to the breeder’s age and breed,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Embryos; Hatch; Poultry. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300304 |
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| Morita,VS; Boleli,IC; Cargnelutti Filho,A. |
| This study analyzed broiler breeder age (29 or 60 wk-old) effects on physical characteristics of eggs (initial mass, mass loss, volume, diameter, surface area and density) and of eggshells(weight, volume, thickness, conductance, and porosity ), as well as the influence of embryo sex on hematological parameters and body, liver and heart weights during incubation (at days 13, 15, 18 and 21). Physical parameter values were lower in 29-wk-old broiler breeder eggs than those of 60-wk-old breeders, except for relative eggshell weight, which was higher. In both male and female embryos, erythrocytic parameters and the body, liver, and heart weights increased during the incubation. The embryos and their organs were heavier when derived from 60-wk-old breeder eggs... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blood parameters; Breeder age; Embryos; Eggshell porosity and conductance; Sex. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100002 |
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| Aparicio, B.. |
| Para producir larvas de peces con buenos rendimientos, se deben conocer los requerimientos nutricionales de la especie, particularmente en los primeros estadios larvarios. Además, se sabe que la nutrición de los reproductores influye directamente en la calidad de las larvas debido, principalmente, a la cantidad y calidad de lípidos que son transferidos desde la gónada hacia los huevos. El objetivo de este trabajo fue analizar la composición de lípidos en huevos, embriones y larvas de pez blanco de Pátzcuaro (Chirostoma estor estor) con el fin de establecer las bases de los requerimientos nutricionales de lípidos durante el desarrollo larvario del pez blanco. También se determinaron los ácidos grasos en tejidos de reproductores (cerebro, gónada, hígado,... |
| Tipo: Theses and Dissertations |
Palavras-chave: 1079; Lipids; Reproduction; Fish culture; Fish eggs; Embryos; Fish culture; Lipids; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4362; Http://aims.fao.org/aos/agrovoc/c_6507. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/3465 |
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| Tallec, Kevin; Huvet, Arnaud; Di Poi, Carole; Gonzalez-fernandez, Carmen; Lambert, Christophe; Petton, Bruno; Le Goic, Nelly; Berchel, Mathieu; Soudant, Philippe; Paul-pont, Ika. |
| In the marine environment, most bivalve species base their reproduction on external fertilization. Hence, gametes and young stages face many threats, including exposure to plastic wastes which represent more than 80% of the debris in the oceans. Recently, evidence has been produced on the presence of nanoplastics in oceans, thus motivating new studies of their impacts on marine life. Because no information is available about their environmental concentrations, we performed dose-response exposure experiments with polystyrene particles to assess the extent of micro/nanoplastic toxicity. Effects of polystyrene with different sizes and functionalization (plain 2-μm, 500-nm and 50-nm; COOH-50 nm and NH2-50 nm) were assessed on three key reproductive steps... |
| Tipo: Text |
Palavras-chave: Oyster; Embryos; Gametes; Microplastics; Nanoplastics. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00453/56419/58090.pdf |
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| de Ciechomski, J.D.; Cassia, M.C.. |
| Observations on the embrionic and larval development of Cynoscion striatus are presented. The description are made on the basis of material obtained by artificial fertilization. Eggs are pelagic, spherical, 700-840µ in diameter and with single oil globule of 210µ-240µ. The yolk is homogeneous and the chorion has smooth surface. The embryonic development is short and at temperatures of 19°-20°C hatching takes place, 34-36 hours after the fertilization. The larvae at hatching are small, about 2 mm in length and not advanced in their development. The mouth is not functional and the anus is not open. The oil globule is situated in the posterior part of the yolk sac; the position of the anus is close to the posterior end of the yolk sac and the digestice tract... |
| Tipo: Journal Contribution |
Palavras-chave: Embryos; Fish larvae; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2924. |
| Ano: 1982 |
URL: http://hdl.handle.net/1834/2045 |
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| Rosales Martínez, Froylan. |
| Se desconoce la respuesta superovulatoria de la hembra Criollo Lechero Tropical (CLT) a la administración de la Hormona Folículo Estimulante (FSH) y se requiere superovular hembras genéticamente superiores. El objetivo del presente estudio fue establecer el mejor protocolo de ovulación múltiple en hembras CLT utilizando FSH. Se realizaron dos ensayos en dos unidades ganaderas de la Región Central del estado de Veracruz de clima cálido subhúmedo. En el primer ensayo se utilizaron 12 vaquillas (35.0±1.7 meses y 404.9±11.6 kg) y en el segundo 6 vaquillas y 5 vacas (50.6±6.2 meses y 429.6±12.1 kg). Las hembras pastorearon pasto estrella (Cynodon plectostachyus), grama nativa (Paspalum ssp) y pasto pará (Brachiaria mutica) con un suplemento comercial con 18% de... |
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Palavras-chave: Embriones; Bovino criollo; FSH; Veracruz; Embryos; Criollo cattle; Maestría; Ganadería. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/1908 |
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| Albuquerque, Karina Perohouskei; Universidade Estadual de Maringá; Prado, Ivanor Nunes do; Universidade Estadual de Maringá; Prado, Rodolpho Martin do; 9850-7326; Cavallieri, Fábio Luiz Bin; Centro Universitário de Maringá; Rigolon, Luiz Paulo; Universidade Estadual de Maringá; Barbosa, Orlando Rus; Universidade Estadual de Maringá. |
| Superovulatory response, production and embryo quality and the effects of seasonal changes on embryo production of Nellore cows fed on either linseed (n-3) or canola seeds (n-6) were evaluated. Sixteen Nellore cows (550 ± 48.0 kg) were fed on three diets: control diet (CON), diet with linseed (LIN) and diet with canola seed (CAN) during four seasons. There was no difference in superovulatory response and in total corpora lutea produced when diets are taken into consideration. The number of cows that responded to superovulatory treatment was higher in the winter (93.8%) than in the summer (62.5%). No difference with regard to the three diets existed on the average number of total structures (6.20, 4.96 and 6.50), unfertilized structures (2.53, 1.17 and... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: Season of the year; Diets; Embryos; Fatty acids; Fertility; Omega 3; Omega 6. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13372 |
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| Talbot,Prue; Lin,Sabrina. |
| Numerous studies have repeatedly shown that women who smoke experience problems establishing and maintaining pregnancies, and recent work has further demonstrated that the in utero effects of smoke may not be manifested until months or even years after birth. The purpose of this review is to examine the recent literature dealing with the effects of cigarette smoke on the earliest stages of human prenatal development. Studies in this area have included the use of animal models, patients undergoing in vitro fertilization, and embryonic stem cell models. Events leading to fertilization, such as cumulus expansion, hyperactivation of sperm motility, and oocyte pick-up by the oviduct are all impaired by smoke exposure in animal models. Steps crucial to... |
| Tipo: Journal article |
Palavras-chave: Cigarette smoke; Embryos; Fertilization; IVF; Stem cells; Toxicology. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200011 |
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| Clegg, J.S.; Drinkwater, L.E.; Sorgeloos, P.. |
| The brine shrimp <i><i>Artemia</i> franciscana</i> is widely used in aquaculture and basic research in areas ranging from molecular biology to evolution and ecology. A key of its life history involves the production of encysted embryos whose development is halted (enters diapause) at the gastrula stage. These shelled embryos are released into the aqueous environment where diapause continues until terminated by suitable conditions that produce an "activated embryo", which then can resume development when conditions permit. Very little is known about the metabolism of diapause embryos, in contrast to activated embryos, which have been studied extensively. We have examined selected features of metabolism in diapause embryos produced in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diapause; Embryos; Metabolism; Artemia franciscana. |
| Ano: 1996 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2924 |
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| Mezzalira,Alceu; Viera,Arnaldo Diniz; Barbieri,Dilmar Paulo; Machado,Mariana Fernandes; Thaler Neto,André; Bernadi,Mari Lourdes; Silva,Carlos Antônio Mondino; Rubin,Mara Iolanda Batistella. |
| In this study, the influence of cytochalasin B on the survival and development after vitrification of oocytes and in vitro produced (IVP) bovine blastocysts was evaluated. In the Experiment I, 956 oocytes were matured for 22h and were immediately vitrified (Vitri treatment) or exposed for 15-20 minutes, to 7.5µg/ml (CB7.5Vitri treatment) or 45µg/ml (CB45Vitri treatment) cytochalasin B solutions, before vitrification. After 30 seconds of exposure to SV1 [400µl TCM-Hepes with 10% fetal serum (SF), 50µl ethylene glycol (EG) and 50µl DMSO], and 20 seconds to SV2 (300µl trehalose 1,0M + 20% SF, 100µl EG and 100µl DMSO) solutions, the oocytes were vitrified in Open Pulled Straws (OPS). The rewarming was performed at 37-38ºC in two steps of 5 minutes each, into... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine; Cytochalasin B; Embryos. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962002000500008 |
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| Registros recuperados: 19 | |
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