15 semen analysis
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31 Terms
what term describes the percentage of sperm moving in a forward direction per high powered field
progressive motility
what objective is used to evaluate motility
40x
what objective is used to evaluate morphology
100x
what percentage of progressively motile sperm must be present to classify a bull as satisfactory
30%
what percentage of morphologically normal sperm must be present to classify a bull as satisfactory
70%
What is the satisfactory motility for a buck
70%
what is the satisfactory morphology for a buck
80%
what is the satisfactory motility for a ram
30%
what is the satisfactory morphology for a ram
50%
what is the satisfactory motility for a stallion
65%
what is the satisfactory morphology for a stallion
50%
what is the satisfactory morphology for a dog
75%
what abnormal sperm morphology is characterized by a a cytoplasmic droplet just proximal to annulus
distal droplet
T/F distal droplets are not considered an impediment to fertility
T
T/F abaxial implantation are not considered an impediment to fertility
T
what is the most common head defect
tapered, and pyriform heads
what is the cause of pyriform and tapered heads
adverse enviornmental conditions
T/F pyriform and tapered heads are not considered detrimental to fertility
F
what is the most common cause of detached heads
failure of transport mechanism to clear senescent sperm
what sperm abnormality is characterized by a local thickening somewhere along the midpiece
pseudodroplets
when are mitochondrial sheath defects formed
during final steps of spermiogenesis
what is the most common midpiece abnormality
DMR
what is the most common way DMRs move on assessment
backwards, in circles
what is the cause of DMRs
abnormal cauda epididymis environment
what is the first defect seen after a stress event
DMR
what is the cause of small numbers of bowed midpieces
artifact of staining
ingestion of what plant can cause coiled principal pieces
gossypol
gossypol can cause what abnormality
coiled principle piece
what is the most common cause of bent principal pieces
hypotonic shock
what type of stain do you use to differentiate between immature sperm cells and round cells
diff quick
what are some methods of determining the concentration of semen
hemocytometer, densimeter, nucleocounter, computer assisted sperm analysis, volume/weight