Semen Examination
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Pellet Method of Semen Cryopreservation: Effect of Cryoprotectants, Semen Diluents and Chicken Lines
Abstract The present study evaluated the effect of cryoprotectants, semen diluents and chicken lines during pellet method of semen cryopreservation. Three different experiments were conducted; Experiment 1 - semen was cryopreserved using dimethylformamide (DMF) at 6% and 9% concentrations in two semen diluents (Lake and Ravie diluent and TES/NaCl diluent), E
Braz. arch. biol. technol.. Publicado em: 01/08/2019
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2. Parâmetros reprodutivos de touros Nelore (Bos taurus indicus) criados a pasto, em de diferentes faixas etárias
RESUMO Este estudo teve o objetivo de demonstrar o efeito da idade sobre as características de circunferência escrotal, cor de pelagem e qualidade seminal, desde a puberdade até após a maturidade sexual. Foram utilizados dados de 6607 exames andrológicos de touros da raça Nelore criados a pasto. Os animais eram de diferentes faixas etárias, variando d
Arq. Bras. Med. Vet. Zootec.. Publicado em: 06/06/2019
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3. CLASSIFICAÇÃO ANDROLÓGICA POR PONTOS E CARACTERÍSTICAS ANDROLÓGICAS NA AVALIAÇÃO REPRODUTIVA DE TOUROS DA RAÇA GIR CANDIDATOS AO TESTE DE PROGÊNIE
Resumo A eficiência reprodutiva deve ser avaliada em propriedades leiteiras para identificação de indivíduos com problemas reprodutivos ligados tanto à fêmea quanto ao macho, visando minimizar perdas na produção. A reprodução está entre os fatores que afetam a produtividade dos rebanhos e chama atenção, em alguns momentos, pelos baixos índices
Ciênc. anim. bras.. Publicado em: 29/04/2019
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4. RE: Clinical relevance of routine semen analysis and controversies surrounding the 2010 World Health Organization criteria for semen examination
Int. braz j urol.. Publicado em: 2015-02
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5. Clinical relevance of routine semen analysis and controversies surrounding the 2010 World Health Organization criteria for semen examination
Semen analysis is the corner stone of infertility evaluation as it provides information on the functional status of the seminiferous tubules, epididymis and accessory sex glands. The methods on how the human semen should be evaluated are provided by the World Health Organization, which periodically releases manuals that include specific protocols and referen
Int. braz j urol.. Publicado em: 2014-08
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6. Testicular echotexture and seminal quality of young Montana Tropical Compound bulls classified as sound and unsound for breeding
The objective of this study was to investigate the relationship between testicular echotexture and seminal quality, in addition to evaluate the testicular parenchyma echogenicity pattern in young Montana bulls classified as sound and unsound for breeding. Fifty-two young Montana Tropical Compound bulls from 22 to 33 months of age were used. The animals were
R. Bras. Zootec.. Publicado em: 2012-08
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7. Causes of rejection of beef bulls in breeding soundness evaluation
The objective of this study was to analyze the rates of rejection in the different steps of the breeding soundness evaluation of beef bulls in the state of Rio Grande do Sul, Brazil. The breeding soundness of 22,113 young and mature bulls of 14 beef breeds, participating in the Program of Reproductive Evaluation (PARTO) was evaluated in the experiment. Data
Revista Brasileira de Zootecnia. Publicado em: 2012-07
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8. Effects of GnRH administration on ovulation and fertility in ewes subjected to estrous synchronization
The objective of this study was to verify the effects of GnRH on ovulation and pregnancy of ewes subjected to a short-term synchronization of estrus. Santa Inês and crossbred Santa Inês/Dorper ewes received 60 mg MAP sponges during 6 days plus 300 IU eCG and 30 µg d-cloprostenol 24 h prior to sponge withdrawal (SW). Ewes were assigned to receive 0.9% NaCl
Revista Brasileira de Zootecnia. Publicado em: 2012-06
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9. Reproductive deficiency in bulls from synthetic breeds according to the type of crossbreed and the morphology of the Y chromosome
We used 550 Braford and 214 Brangus-lbagé bulls to study the association between Y chromosome morphology and the evaluation of breeding-soundness, karyotyping and breeding records were used to assess Y chromosome morphology. In general, no direct association was detected between the individual type of Y chromosome and reproductive fitness as previously esti
Publicado em: 2010
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10. Influência da disponibilidade de sombra a pasto sobre as características seminais e tolerância ao calor de touros da raça Brahman (Bos taurus indicus) / Influence of shadow availability on semen characteristics and heat tolerance on Brahman bulls (Bos taurus indicus)
No Brasil, assim como em outros países tropicais, a criação de bovinos é feita de maneira extensiva e, portanto é suscetível às intempéries climáticas. Esse tipo de criação pode levar ao estresse térmico, mesmo em animais zebuínos. Sob condições de estresse térmico é possível a ocorrência de degeneração testicular, e por isso, há a proc
Publicado em: 2010
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11. Anatomical aspects of the penis, prepuce and penis retractor muscle of cattle Gir and Nellore / Aspectos anatômicos do pênis, prepúcio e músculo retrator do pênis de bovinos das raças Gir e Nelore
Professionals of reproduction are increasingly looking for a deeper study of the penis and prepuce for the selection of reproductors to avoid factors that may favor the development of diseases causing impotence coeundi. In the surgical area this knowledgment facilitate nerve blocks and surgical approaches. So, it was aimed to conduct a review of penis and pr
Publicado em: 2010
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12. Complemental tests in semen and evaluation of the anionic proteins and peptides differentially synthesized in seminal plasma of Nelore bulls classified as sound and unsound for breeding / Testes complementares em sêmen e avaliação da síntese diferencial de proteínas e peptídeos aniônicos em plasma seminal de touros da raça Nelore classificados em aptos e inaptos à reprodução
The main analyses performed routinely to assess the sperm quality are the spermatic motility and morphology for the measurement bulls fertility. Several complementary techniques are used to improve bulls fertility evaluation. Each technique is related to different aspects of sperm quality and their results are not yet fully understood. Four experiments were
Publicado em: 2009