Comparison of assessment of fowl sperm viability by eosin-nigrosin and dual fluorescence (SYBR-14/PI).
Theriogenology
; 50(3): 487-93, 1998 Aug.
Article
en En
| MEDLINE
| ID: mdl-10732141
ABSTRACT
The kinetics of fowl sperm viability/mortality following short-term and long-term in vitro storage were studied using 2 different staining methods:
eosin/nigrosin (observed under light microscopy) and SYBR-14/PI (dual fluorescence). Based on data obtained at 0, 30 min and at 2, 4 and 24 h (T0, T30, T2, T4, and T24) after in vitro storage (4 degrees C, agitated) of fresh or frozen-thawed semen, the dual association SYBR-14/PI was more effective than eosin/nigrosin (P < 0.05) staining for the detection of sperm viability/mortality at early stages (30 min) in nonfrozen ejaculates stored above 0 degree C. In cryopreserved preparations, the 2 techniques were comparable for assessing viable spermatozoa immediately after thawing, but higher percentages (P < 0.05) of nonviable spermatozoa were detected by the SYBR-14/PI procedure for up to 4 h of in vitro storage post thawing (4 degrees C, agitated). Finally, comparable results were observed between the 2 techniques 24 h after beginning in vitro storage post thawing. It is concluded that the dual association SYBR-14/PI procedure is more effective (or, at least, more rapid) than eosin/nigrosin staining for the assessment of sperm viability/mortality in both fresh and cryopreserved samples of fowl semen. However, in the latter case, the thawing stage needs to be followed by a period of in vitro storage lasting at least 4 h to allow for easier discrimination between viable and nonviable populations of spermatozoa.
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Banco de datos:
MEDLINE
Asunto principal:
Aves de Corral
/
Espermatozoides
/
Eosina Amarillenta-(YS)
/
Colorantes
/
Fluorescencia
/
Compuestos de Anilina
Límite:
Animals
Idioma:
En
Año:
1998
Tipo del documento:
Article