Efeito da somatotropina recombinante bovina (rbST) no perfil plasmático da progesterona, estradiol, hormônio do crescimento e IGF-1 de fêmeas bovinas

Trovão, Hallef Mithchel PereiraAmaral, Brenda Karine Lima doCosta Júnior, Sérgio HenriqueRosário, Carla Janaína Rebouças Marques doMelo, Ferdinan AlmeidaSantos, Hamilton Pereira dosChaves, Ricardo de MacêdoMoraes Júnior, Felipe de Jesus

This study aimed to evaluate the effect of recombinant bovine somatotropin on the plasma levels ofprogesterone, estradiol, growth hormone and IGF-1. 8 cows Girolando were divided into three groups: control,250 mg rbST and 500 mg rbST. Blood samples were collected 60 days prior to aspiration, in 12-day intervals,with the samples taken on the same days of rbST applications. For hormone measurements, ELISA commercialkits were used. The hormone concentrations were subjected to the normal pattern Cramer-von Mises and foraverage of comparison, the test Student-Newman-Keuls (SNK) was used, with 5% probability. It was notpossible to measure the plasma concentration of GH hormone. The rbST administration had no effect on plasmaconcentrations of progesterone, estradiol and IGF-1 among the groups treated with 250 mg and 500 mg and theuntreated group, there was also no significant variance between the days of application and OPUs.(AU)

1. bovine
2. hormones
3. bovinos
4. hormônios
5. rbST