RESUMO
BACKGROUND: The quality of frozen semen can be improved by supplementing Tris extender with antioxidant to prevent oxidation and maintain sperm motility. OBJECTIVE: To study the effects of adding combinations of suitable concentrations of butylated hydroxy toluene (BHT) and Vitamin E in Tris extender on the quality of frozen goat semen. MATERIALS AND METHODS: A total of 40 ejaculates collected from five Beetal bucks were used to study the effect on the quality of frozen semen of supplementing Tris extender with 200 µM BHT, 2 mM Vitamin E and 200 µM BHT + 2 mM Vitamin E. RESULTS: The sperm motility, live sperm, live intact acrosome and HOST-reacted sperm differed significantly (P<0.01) between stages and between antioxidants. There was no significant difference (P<0.05) in interaction between stages (equilibration, freezing) and antioxidants, except for HOST-reacted sperm. Critical difference test revealed that Tris extender containing 2 mM vitamin E showed significantly (P<0.05) higher sperm motility, live sperm, live intact acrosome and HOST-reacted sperm, and significantly (P<0.05) lower release of alanine transaminase (ALT) and aspartate transaminase (AST). CONCLUSION: Supplementation of Tris extender with 2 mM vitamin E maintained superior quality of frozen Beetal buck semen.
Assuntos
Hidroxitolueno Butilado , Criopreservação/veterinária , Crioprotetores , Preservação do Sêmen , Vitamina E , Acrossomo , Animais , Hidroxitolueno Butilado/farmacologia , Crioprotetores/farmacologia , Masculino , Sêmen , Preservação do Sêmen/veterinária , Motilidade dos Espermatozoides , Espermatozoides , Vitamina E/farmacologiaRESUMO
Dengue is emerging as major public health concern in northeast India and spreading with increased morbidity. Most cases were recorded in Guwahati metropolitan city of the state of Assam during post-monsoon months (September- December). These comprised all age groups of both sexes with significantly higher incidence of cases in adult males aged 26- 60 years.
RESUMO
Dengue is emerging as major public health concern in northeast India and spreading with increased morbidity. Most cases were recorded in Guwahati metropolitan city of the state of Assam during post-monsoon months (September- December). These comprised all age groups of both sexes with significantly higher incidence of cases in adult males aged 26– 60 years.