|
|
|
|
| |
|
|
Martins,J.A.M.; Souza,F.A.; Ferreira,M.B.D.; Gonçalves,P.E.M.; Emerick,L.L.; Dias,J.C.; Leite,T.G.; Graça,D.S.; Andrade,V.J.; Vale Filho,V.R.. |
O estudo visou identificar tourinhos Gir precoces e não precoces quanto à puberdade e avaliar diferenças durante seu desenvolvimento reprodutivo. Peso vivo e perímetro escrotal foram mensurados mensalmente junto com a coleta e a avaliação física e morfológica do sêmen de 16 animais, dos 13 aos 23 meses de idade. Animais precoces foram mais leves na pré-puberdade e apresentaram menores idades à puberdade e à maturidade sexual - 17,0 e 18,7 meses -, respectivamente, - em relação aos não precoces - 19,2 e 20,5 meses, respectivamente. A motilidade aumentou na pré-puberdade dois meses mais cedo nos animais precoces - 1,75% a 18,4% dos 14 aos 17 meses - em relação aos não precoces - 2,5% a 12,4% dos 15 aos 18 meses de idade. Registrou-se aumento mais cedo da... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avaliação de sêmen; Bovinos; Precocidade; Puberdade; Zebu. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000600001 |
| |
|
|
Pinto,S.C.C.; Almeida,D.S.; Alves,M.B.R.; Florez-Rodriguez,S.A.; Abreu Júnior,G.S.; Alves,N. Britto e; Celeghini,E.C.C.; Laskoki,L.M.; Souza,F.A.. |
ABSTRACT The aim of this study was to evaluate the addition of vitamin C, reduced glutathione and the association thereof to the bovine semen cryopreservation extender. The ejaculate from nine bulls were divided into four fractions, each corresponding to a treatment, namely: control group-semen diluted with Tris-yolk extender; vitamin C group-semen diluted in Tris-yolk extender supplemented with vitamin C (2.5mmol/mL); glutathione group-semen diluted in Tris-yolk extender supplemented with reduced glutathione (2.5mmol/mL) and associated group-semen diluted in Tris-yolk extender supplemented with vitamin C (1.25mmol/mL) and reduced glutathione (1.25mmol/mL). Afterwards, the semen was packed into French straws and submitted to cryopreservation using... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Reactive oxygen species; Sperm membranes; Spermatozoa. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000100009 |
| |
|
|
Martins,V.E.D.; Pinto,S.C.C.; Chaves,R.M.; Barros Filho,A.K.D.; Laskoski,L.M.; Souza,F.A.. |
ABSTRACT This study aimed to evaluate the addition of Vitamin C, reduced Glutathione and trolox on sperm characteristics of pork refrigerated semen. Six pigs were collected through the technique of gloved hand (10 ejaculates/animals). The semen was diluted in MR-A®. After the previous evaluations, the treatments were added: Control group: diluent only; Vitamin C Group: 200μM/mL Vitamin C; Trolox Group: 200μM/mL Trolox; Glutathione group: 2.5mM/ml Reduced glutathione. The semen was stored in thermal boxes and placed inside the refrigerator at 15oC and evaluated at D0, 12, 48, 72 hours. After 30 hours of incubation, each treatment was divided into two equal fractions and the same concentration of antioxidants was added in one of the parts. The results show... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glutathione; Sperm; Trolox; Vitamin C. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000100145 |
| |
|
| |
|
|
|