Seminal Degeneration
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Reproductive toxicity of neem seeds (Azadirachta indica) in male quail (Coturnix coturnix japonica)
RESUMO: Considerando que o neem (Azadirachta indica A. Juss.) causa efeitos deletérios na fertilidade, objetivou-se avaliar o efeito da alimentação com sementes de neem sobre a qualidade seminal, parâmetros biométricos e morfometria testicular com codornas (Coturnix coturnix japonica Linnaeus, 1758) com 90 dias de idade, como modelo experimental. Após
Cienc. Rural. Publicado em: 14/11/2019
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2. Parametros escroto-testiculares e de semen em caprinos adultos submetidos a insulacao escrotal.
Ejaculados de seis bodes Moxotó e seis ½ sangue Moxotó-Pardo Alpina, adultos, mantidos em confinamento, foram avaliados antes e após a insulação do saco escrotal com bolsa de plástico, de parede dupla, durante 6,5 dias. A degeneração seminal ocorreu em todos os animais na 4a semana após o início da insulação, ressaltando-se a redução na concen
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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3. Avaliação da degeneração testicular causada por insulação escrotal em carneiros: morfometria testicular, características seminais e ultrassonográficas. / Evaluating the testicular degeneration caused by scrotal insulation in rams: morphometry of testis, seminal characteristics and ultrasound.
A avaliação reprodutiva de ovinos deve ser realizada em rebanhos antes da estação reprodutiva, seleção de cordeiros para substituição, antes da compra de um ovino, ou quando se investigando um problema reprodutivo num rebanho. O exame ultras-sonográfico dos testículos permite a avaliação da anatomia, do parênquima do órgão e de estruturas vizi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/12/2010
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4. Effects of the overshadow availability at pasture on the reproductive characteristics in Nelore Bulls / Efeitos da disponibilidade de sombra na pastagem sobre as características reprodutivas de touros da raça Nelore
It is known that heat stress is the main cause that affects bulls reproductive performance, consequently leaded to testicular degeneration. This pathologic alteration can also occur in Bos Indicus cattle. The objective of this experiment was verify the shadow availability effect at pasture on reproductive characteristics in Nelore, a Bos Indicus bull. For th
Publicado em: 2009
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5. Influência da distrofia muscular do Golden Retriever (GRMD) na viabilidade espermática e nas características morfológicas do aparelho reprodutivo masculino / Influence of Golden Retriever muscular dystrophy (GRMD) on sperm viability and on morphologic characteristics of the male reproductive tract
Muscular dystrophies constitute a group of diseases characterized by progressive and irreversible muscle degeneration. Duchenne´s Muscular Dystrophy (DMD) is a lethal myopathy caused by dystrophin deficiency, a muscular cell cytoskeleton protein. The dystrophin gene have recessive characteristic and is located in the p21 portion of the X chromosome. Advance
Publicado em: 2009
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6. Efeitos da somatotropina recombinante bovina sobre as características espermáticas, concentrações de testosterona e IGF1 no plasma seminal de touros (Bos taurus taurus) submetidos à degeneração testicular / Recombinant bovine somatotropin effects on testosterone and IGF1 levels of bulls (Bos taurus taurus) under testicular degeneration
Testicular heat degeneration is the most common cause of poor fertility of Bos taurus bulls in the tropics. The Growth Hormone has been studied in man infertility treatment with some progress. A randomly blocks experimental design used 16 mature bulls allotted in 4 treatments in a 2x2 factorial arrangement (0 e 96 hours of scrotal insulation, 0 e 1,2 mg bST/
Publicado em: 2004
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7. Effects of thermal stress and recombinant bovine somatotropine employment on seminal features, integrity of membranes, mitochondrial function and chromatin structure of spermatozoa from Simmental bulls (Bos taurus taurus) / Efeitos do estresse térmico testicular e do uso da somatotropina recombinante bovina nas características seminais, integridade de membranas, função mitocondrial e estrutura da cromatina de espermatozóides de touros Simental (Bos taurus taurus)
Modern approach concerning binomial thermal stress-testicular degeneration was done in order to study chromatin, acrosomal and mitochondrial integrity. Furthermore, there are few relates about effects of exogenous bovine somatotropine (bST) on seminal quality of bulls which were submitted to thermal stress and consequent testicular degeneration. The objectiv
Publicado em: 2004
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8. Influencia da elevação da temperatura testicular sobre o complexo DNA-proteina e outras caracteristicas de espermatozoides de coelho (Oryctolagus cuniculus)
The effect of increase in testis temperature on spermatozoal DNA-protein complexes and other characteristics was studied in rabbits subjected to three days of experimental cryptorchidism and accompanied along several periods, after ceased the stress. A decrease in strength, motility and concentration as well as an increase in head and tail pathologies and DN
Publicado em: 1998
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9. Ultrastructural Analysis of Spermiogenesis in Segregation Distorter Males of DROSOPHILA MELANOGASTER: The Homozygotes
We have studied spermiogenesis at the ultrastructural level in males of genotype SD(NH)-2/SD-72, which are nearly sterile owing to the dysfunction of virtually all of their sperm. Ultrastructural aspects of spermiogenesis in these homozygous SD males are qualitatively similar to those found among dysfunctional sperm produced by heterozygous SD males. In part
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10. Cortical Air Spaces (Aerenchyma) in Roots of Corn Subjected to Oxygen Stress: STRUCTURE AND INFLUENCE ON UPTAKE AND TRANSLOCATION OF 86RUBIDIUM IONS
When the seminal root system of 14-day-old corn (Zea mays cv. Dekalb 202) was subjected to O2 stress, nodal roots with well developed cortical air spaces (aerenchyma) grew into the deoxygenated solution. Microscopic examination showed that there was extensive breakdown of cells in the midcortex of these roots, while the stele, endodermis, and inner layer of