Detalhes bibliográficos
| Ano de defesa: |
2014 |
| Autor(a) principal: |
NASCIMENTO, Pábola Santos
 |
| Orientador(a): |
SANTOS FILHO, Antônio Santana dos |
| Banca de defesa: |
BARTOLOMEU, Cláudio Coutinho,
GUERRA, Maria Madalena Pessoa,
CAMARGO, Luiz Sérgio de Almeida |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal Rural de Pernambuco
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Sanidade e Reprodução de Ruminantes
|
| Departamento: |
Unidade Acadêmica de Garanhuns
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6829
|
Resumo: |
The use of sexed semen for in vitro embryo production (IVP) is a potentially effective means for obtaining the progeny with predetermined sex. For years, animal owners wanted a methodology that pre determine the sex of offspring for their herds. Rates of cleavage, morula and blastocyst seem to be affected not only by the damages caused by sexing, but it is believed that the bull factor, and other aspects that have not been fully elucidated, directly influencing its successful use. The aim of this study was to evaluate the influence of type of semen (sexed /conventional) and a bull factor over blastocyst rates when submitting bovine oocytes obtained from slaughterhouse to IVP, and also compare these results with analyzes of sperm kinetics. Oocytes (n = 959) were matured, fertilized with sexed and non-sexed semen from three 5/8 Girolando bulls. A straw of each type of semen was assessed with use of "computer-assisted semen analysis" (CASA) and fluorescence microscopy. Three replicates were performed during the experiment. Data were analyzed by SPSS 16.0 statistical program employing analysis of variance (ANOVA). The Student t test was used to detect differences between groups. The Chi-square test was used to analyze the results of embryo production. For all analyzes, values were considered significant (P <0.05). The results differed between sexed (21.10%) and non-sexed semen (31.06%) to blastocysts production. We conclude that in the present work sexed semen was less efficient in producing blastocyst when comparing non-sexed semen of the same bulls and when comparing semen types (sexed and non-sexed) from the same bull. Analyses of sperm kinetics and fluorescent probes were compatible with the fertilizing potential of samples of sexed and non-sexed semen of 5/8 Girolando bulls. |
