Embryonic Development
Mostrando 13-24 de 2372 artigos, teses e dissertações.
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13. Reproductive physiology of the heat-stressed dairy cow: implications for fertility and assisted reproduction
Abstract Heat stress causes a large decline in pregnancy success per insemination during warm times of the year. Improvements in fertility are possible by exploiting knowledge about how heat stress affects the reproductive process. The oocyte can be damaged by heat stress at the earliest stages of folliculogenesis and remains sensitive to heat stress in the
Anim. Reprod.. Publicado em: 28/11/2019
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14. Oocytes, embryos and pluripotent stem cells from a biomedical perspective
Abstract The veterinary and animal science professions are rapidly developing and their inherent and historical connection to agriculture is challenged by more biomedical and medical directions of research. While some consider this development as a risk of losing identity, it may also be seen as an opportunity for developing further and more sophisticated co
Anim. Reprod.. Publicado em: 28/11/2019
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15. Rumen-protected methionine in cattle: influences on reproduction, immune response, and productive performance
RESUMO: Atualmente, as informações e o conhecimento gerado sobre os principais ingredientes utilizados em dietas para bovinos possibilitaram maior assertividade em suas formulações. Dentre esses ingredientes, os aminoácidos se destacam como uma ferramenta promissora, capaz de levar à redução nos níveis totais de proteína bruta e ajustar as concentr
Arq. Inst. Biol.. Publicado em: 25/11/2019
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16. The perturbed expression of m6A in parthenogenetic mouse embryos
Abstract Parthenogenetically activated oocytes cannot develop to term in mammals owing to abnormal epigenetic modifications. Methylation of the N6 position of adenosine (m6A) is a post-transcriptional epigenetic modification of RNA. To investigate the role of m6A methylation in parthenogenetic (PA) embryonic development, we analyzed METTL3, METTL14, FTO, ALK
Genet. Mol. Biol.. Publicado em: 14/11/2019
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17. Effect of Egg Weight on External and Internal Qualities, Physiological and Hatching Success of Japanese Quail Eggs (Coturnix coturnix japonica)
ABSTRACT This experiment was conducted to evaluate the effect of egg weight and egg physical characteristics on embryonic development, hatchability, and hatchling weight of Japanese quails (Coturnix coturnix japonica). In total, 689 eggs were classified in two categories: small (<13.5 g) or large (≥13.5 g), and different external eggshell and internal qual
Braz. J. Poult. Sci.. Publicado em: 11/11/2019
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18. Evaluation of the Relationship Between the Breeder’s Age, Breed and the Incubator Types on Quality and Animal Welfare in the Hatchery
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 an
Braz. J. Poult. Sci.. Publicado em: 11/11/2019
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19. Effect of Rolipram on in vitro maturation, gene expression and embryonic development in bovines
RESUMO O objetivo deste trabalho foi avaliar o efeito do rolipram durante a maturação de oócitos bovinos, expressão gênica e embriões produzidos in vitro. Os ovários bovinos foram coletados no matadouro. Os COCs foram selecionados e divididos em cinco grupos: controle 0 tempo; controle: MIV por 24 horas; tratamentos rolipram com bloqueio MIV por 24 ho
Arq. Bras. Med. Vet. Zootec.. Publicado em: 28/10/2019
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20. Macroscopic embryonic development of Guinea fowl compared to other domestic bird species
ABSTRACT Since few studies have addressed the embryonic development of Guinea fowl (Numida meleagris), the objective of the present study was to evaluate its embryonic development in the Cerrado region of Brazil and compare the results to published descriptions of the embryonic development of other domestic bird species. The commercialized weight for Guinea
R. Bras. Zootec.. Publicado em: 17/10/2019
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21. Medidas da aprendizagem organizacional: revisão de literatura e agenda de pesquisa
Resumo Este artigo apresenta o estado da arte sobre mensuração da aprendizagem organizacional. Foram utilizadas como referência as escalas publicadas em artigos científicos das bases de dados ISI Web of Science, sub-base Social Sciences Citation Index (SSCI) e Scientific Eletronic Library Online (SciELO). O artigo mapeia as escalas de aprendizagem organi
Organ. Soc.. Publicado em: 07/10/2019
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22. Análise espacial das anomalias congênitas do sistema nervoso
Resumo Introdução A anomalia congênita do sistema nervoso ocorre durante o desenvolvimento embrionário. O território pode ser um fator determinante e esse conhecimento é importante para o planejamento de ações ou intervenções em saúde pública. Objetivo Detectar aglomerados espaciais da ocorrência das anomalias congênitas do sistema nervoso e
Cad. saúde colet.. Publicado em: 30/09/2019
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23. Subsidies for propagation of native species in Brazil with medicinal potential: Calophyllum brasiliense Cambess
Resumo: Calophyllum brasiliense Cambess. (guanandi) é uma espécie nativa com potencial medicinal e também com expectativa para exploração comercial (madeira) e recuperação de áreas degradadas. As sementes apresentam dormência física e mecânica, exigindo técnicas para superação, e necessitam de conhecimento da morfologia de sementes e plântulas
J. Seed Sci.. Publicado em: 09/09/2019
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24. [PROVISIONAL] Birth defects in Brazil: Outcomes of a population-based study
Abstract Birth defects (BDs) are functional and structural alterations in embryonic or fetal development. With an incidence of approximately 3-5%, BDs are a leading cause of infant mortality and lifelong disability. A population-based prospective case-control study was conducted for one year with 5204 infants, between 1st March 2011 and 29th February 2012, i
Genet. Mol. Biol.. Publicado em: 12/08/2019