Reproductive Disease in the Bull (and BSE) Flashcards

1
Q

What is the minimum progressive motility of sperm in the bull?

A

30%

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2
Q

What is the minimum percentage of normal sperm morphology in the bull?

A

70%

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3
Q

What is a “cork screw” claw?

A

when lateral claws grow at a faster pace than the medial claws

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4
Q

What are the methods of semen collection in the bull?

A
  • electro-ejaculation
  • manual massage
  • AV collection
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5
Q

Define a primary morphological abnormality of sperm

A

a defect that originates in the testis during spermatogenesis

  • a production problem
  • usually involves head and middle piece
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6
Q

Define a secondary morphological abnormality of sperm

A

a defect that originates in the epididymis

- a transit defect

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7
Q

Define a major morphological defect of sperm

A

defect that has been proven to be associated with infertility

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8
Q

Define a minor morphological defect of sperm

A

defect that is not associated with infertility

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9
Q

Define a compensable morphological defect of sperm

A

a defect that can be compensated for by additional normal sperm

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10
Q

What is the etiology of penile papilloma?

A
  • Bovine papilloma virus

- hommsexual riding among young bulls

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11
Q

How is penile papilloma transmitted?

A

enters via wounds

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12
Q

What are the clinical signs of penile papilloma?

A
  • scant hemorrhage after coitus
  • hesitance to extend penis or to breed
  • usually a single, pedunculated growth
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13
Q

How is penile papilloma treated?

A

surgical excision

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14
Q

What are the complications associated with penile papilloma?

A
  • urethral injury

- recurrence

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15
Q

What is the etiology of penile hair rings?

A
  • body hair accumulation on penis

- homosexual riding among young bulls

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16
Q

What are the complications associated with penile hair rings?

A
  • necrosis of urethra resulting in fistula

- amputation of glans penis

17
Q

What is the etiology of persistent frenulum?

A
  • incomplete separation of penis and prepuce
  • penis cannot extend, resulting in ventral deviation
  • heritable
18
Q

What is the treatment for persistent frenulum?

A

surgical excision

19
Q

What breed of bull is more susceptible to preputial injuries?

A

Bos indicus

- sheath hangs lower

20
Q

What is the conservative therapy for preputial lacerations?

A
  • clean damaged tissues
  • emollient ointment “petercillin”
  • bandaging and slings
21
Q

What is the pre-surgical therapy for preputial lacerations?

A
  • reduce edema
  • petercillin
  • prophylactic antibiotics
22
Q

What are the surgical treatments for preputial lacerations?

A
  • resection and anastomosis
  • amputation of affected prepuce
  • preputial reconstruction
23
Q

Which breed of cattle is more predisposed to penile hematoma?

A

Hereford

24
Q

How does a penile hematoma usually occur?

A
  • bull misses vagina on breeding thrust, penis hits rear of cow or cow slips and goes down
  • penis bends rapidly
  • reduces volume and increases pressure of CCP
  • ruptures at dorsal aspect of distal bend of sigmoid flexure
25
Q

What are the clinical signs of penile hematoma?

A

swelling of sheath immediately cranial to base of scrotum

26
Q

What is the conservative/medical treatment for penile hematoma?

A
  • sexual rest for 60 days at least
  • systemic antibiotics
  • hydrotherapy
27
Q

What is the surgical treatment for penile hematoma?

A
  • perform 3-7 days after injury
  • repair defect in tunica albuginea
  • post-op antibiotics
  • minimum 60 days sexual rest
28
Q

What is preputial avulsion?

A

prepuce is torn off from connection to free portion of penis

29
Q

Why does an S-shaped penile deviation occur?

A

apical ligament is too short

30
Q

Why does a rainbow/ventral penile deviation occur?

A

apical ligament is too long

31
Q

Why does a corkscrew or spiral penile deviation occur?

A

apical ligament cannot be maintained in normal position

32
Q

Which organisms are the usual cause of vesiculitis?

A

B. abortus
A. pyogenes
H. somnus

33
Q

What are the clinical features of vesiculitis?

A
  • vesicular glands painful on palpation

- loss of lobulation

34
Q

How is vesiculitis treated?

A

tetracyclines

35
Q

Which organisms are the usual cause of epididymitis?

A

T. pyogenes

B. abortus

36
Q

What is the clinical manifestation of epididymitis?

A
  • swollen and painful early in disease

- becomes small, hard, and misshapen

37
Q

How is epididymitis treated?

A

tetracyclines