Analysis of semen Flashcards
Collected semen is brought to the laboratory, where the container is placed in a _____, _____ or _____ at _____ for temperature stability
Collected semen is brought to the laboratory, where the container is placed in a water bath, incubator, or dri-block heater at 35-37 deg. Celsius for temperature stability
______ is examined first, then normal morphology
Motility
Semen is stored and handled in an __________ until analysis is completed and processing begins
isothermal environment
Estimated through microscopic examination at 40-100x
Motility
_____drop of sample is placed on a slide, cover-slipped and evaluated for % motility
5 uL
Generally, a sperm motility of at least _______ is considered acceptable, though it depends on whether __________________
30%
minimally acceptable motility standards are considered
Done after motility examination, clearly visualized via eosin-nigrosin, India ink, or Wright’s stain dyes
Morphology
Morphology:
Abnormalities can be classified as primary ________ or ____________
primary (e.g head shape) or secondary (minor, e.g bent
tails)
Satisfactory score for bulls is_______ normal morphology, without distinguishing between types of abnormalities
70% normal morphology
________ may also be assess to evaluate capacity of acrosome to
easily disintegrate and affect fertility
Acrosomal activity/activation
Head defects
thin head
large
small
double
alongated
amorphous
Midpiece defects
bent
irregular
cytoplasmic (droplet?/droplethin?)
thick
asymetric
Tail defects
no tail
short
broken
coiled
terminal droplet
double