RESUMO
The aim of this study was to characterize changes in serum concentrations of triiodothyronine (T(3)) and thyroxine (T(4)) in relation to growth and the onset of puberty in Carora heifers, a Venezuelan dairy breed. Heifers aged 7 to 16 months were grouped retrospectively according to puberty status into 4 groups: Pubertal (control group; n = 12) and nonpubertal (n = 8) contemporary (born during the same week) heifers, pubertal (n = 7.) and nonpubertal (n = 7) noncontemporary (born in different months) heifers. A split-plot model with repeated measures over Months 7 to 16 of age was used. Control heifers attained puberty at 290 +/- 5 kg body weight (BW) between 13 and 14 months of age. Significant (P < 0.01) interactions of birth time of year and puberty status were detected in BW and serum concentrations of T(3), but only interaction of birth time of year was found in T(4). A transient but significant (P < 0.05) decrease in T(3) secretion was seen in pubertal contemporary and noncontemporary (101 +/- 4 and 113 +/- 4 ng/d1, respectively) heifers at Month 12 of age, a change which could be critical to the onset of puberty. Significant (P < 0.05) positive correlation was found between BW and T(3). In summary, thyroid hormone secretion changed across the months of growing and around the onset of puberty in Carora heifers.
RESUMO
Foram pesquisadas secrecoes vaginais em 100 pacientes gravidas, em suas manifestacoes clinicas e laboratoriais (citologia de Papanicolau e cultura), no periodo de abril a junho 1982, no Ambulatorio de Pre-Natal do Departamento de Ginecologia e Obstetricia da Faculdade de Medicina da Universidade Federal de Minas Gerais. Vinte e uma pacientes negaram secrecao vaginal: destas, em 14 observou-se corrimento, com diagnostico laboratorial positivo (66,6% de informacoes falso-negativas). A moniliase ocupou o primeiro lugar na incidencia (36%), seguida pela tricomoniase (23%). A incidencia de moniliase foi 1,5 vez superior a de tricomoniase. A incidencia do Haemophilus vaginalis foi de 17% e a associacao de fungos e tricomonas ocorreu em 8% dos casos. A analise comparativa dos metodos laboratoriais (citologia e cultura) ressaltou a importancia dos dados complementares fornecidos pela citologia oncotica associada a cultura como metodo diagnostico. O diagnostico clinico quando comparado ao laboratorial,foi bastante falho para os diversos tipos de secrecoes vaginais, mostrando erro no diagnostico clinico em mais de 50% dos casos