RESUMO
Addition of 2.5 mM vitamin C or 40 mM of glucose to washed buffalo spermatozoan suspensions in Ca2(+)-free Kreb's Ringer Hanseliet saline buffer (pH 7.0) resulted in significant lower malonaldehyde concentration and higher spermatozoan motility and liver spermatozoa compared to control levels after 45 min of aerobic incubation at 37 degrees C or pre-incubation levels.
Assuntos
Animais , Ácido Ascórbico/farmacologia , Búfalos/metabolismo , Glucose/farmacologia , Peroxidação de Lipídeos/efeitos dos fármacos , Masculino , Espermatozoides/metabolismoRESUMO
Total plasma cholesterol (mg/dl) significantly (P less than 0.01) decreased from 70.8 to 54.01 as the dietary Cu levels increased from 2.5 to 5 ppm at 12 pm Zn concentrations in male weanling rats. A similar trend was observed in the blood peripheral testosterone concentration at 12 ppm Zn and 2.5 ppm Cu. Histological examination of testes revealed smaller seminiferous tubules with atrophy of germinal epithelium. Also a marked loss of spermatogenic cells was observed in Zn and Cu deficient rats.
Assuntos
Animais , Colesterol/sangue , Cobre/administração & dosagem , Masculino , Ratos , Túbulos Seminíferos/efeitos dos fármacos , Testículo/citologia , Testosterona/sangue , Zinco/administração & dosagemRESUMO
Vitamin E significantly (P less than 0.01), inhibited lipid peroxidation as indicated by malonaldehyde (MDA) production and improved significantly (P less than 0.01) motility and percent live spermatazoa of B. bubalis semen. Bulls with higher MDA formation had lower sperm motility and percent live count. Variance due to bulls for all the three parameters were significant (P less than 0.05).