Importance of sperm genotype (indicus versus taurus) for fertility and embryonic development at elevated temperatures |
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| Authors: | Barros Ciro M Pegorer Marcelo F Vasconcelos José Luiz Moraes Eberhardt Bruno G Monteiro Fabio M |
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| Institution: | Department of Pharmacology, Institute of Bioscience, University of S?o Paulo State (UNESP), 18618-000 Botucatu, SP, Brazil. cmbarros@ibb.unesp.br |
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| Abstract: | Heat stress has negative effects on bovine reproduction, particularly for European breeds (Bos taurus taurus) that are less thermotolerant than zebu cattle (Bos taurus indicus). Here, the evidence that spermatozoa and oocyte both contribute to early embryonic resistance to heat shock is demonstrated. In addition, the use of reproductive biotechnologies to improve bovine thermotolerance, are outlined by comparing data from taurus, indicus and crossbred genotypes. |
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