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Provedor de dados:  R. Bras. Zootec.
País:  Brazil
Título:  Leptin and insulin in the seminal plasma of zebu bulls in peripuberty
Autores:  Souza,Fernando Andrade
Martins,Jorge André Matias
Vale Filho,Vicente Ribeiro do
Andrade,Venício José de
Ferreira,Marcos Brandão Dias
Emerick,Lucas Luz
Pinto,Pablo Fabricio Bruno
Leite,Ticiano Guimarães
Data:  2012-04-01
Ano:  2012
Palavras-chave:  Gyr dairy bulls
Sperm defect
Resumo:  In order to determine the profile of leptin and insulin values in seminal plasma and their correlations with sperm patterns during the peripuberty, a total of 16 crossbred Gyr dairy bulls were monitored from 60 days before to 60 days after puberty, separated into two groups, early and regular, according to the onset of puberty. Hormone values were determined by radioimmunoassay after gel filtration in fast performance liquid chromatography and semen patterns, according to the Brazilian College of Animal Reproduction. Insulin concentrations in seminal plasma did not differ between groups, nor between the ages, with the pooling of the data showing average of 35.15±16.93, 36.60±26.21, 26.82±09.81, and 43.56±31.71 32.24±16.71 U/mL for the pubertal period of -60, -30, 0, +30 and +60 days, respectively. These values were not correlated with sperm parameters, but differed in the group of animals with the highest percentage of major defects (31.08±18.58 U/mL) compared with those with lower percentage of these sperm defects (40.01±25.37 U/mL). Leptin was not correlated with sperm parameters and did not differ between groups or stage of sexual development, with concentrations of 23.10±10.43, 24.35±9.42, 22.41±9.90, 23.76±9.69 and 24.99±11.42 ng/mL for the periods of puberty aforementioned, respectively, after being grouped. These results demonstrated the binding of insulin to the structural quality of the sperm cell, and this hormone is indicated in andrologycal evaluation of future breeding soundness.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Sociedade Brasileira de Zootecnia
Relação:  10.1590/S1516-35982012000400013
Formato:  text/html
Fonte:  Revista Brasileira de Zootecnia v.41 n.4 2012
Direitos:  info:eu-repo/semantics/openAccess

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