Camelid Therio: Male Flashcards

1
Q

Anatomy of the male reproductive system

A

No seminal vesicles
Testes small in the perineal region
Sigmoid flexure cranial to the scrotum

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2
Q

When do male camelids reach puberty

A

Free from prepuce @ 2 yrs
Spermatogenesis 18 mon
Breeding age 2-3 yrs

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3
Q

When do they reach sexual maturity

A

4-5 yrs

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4
Q

Possible congenital/ hereditary conditions

A

Heart murmurs
Crooked tails (won’t be registered), polydactyla, syndactyla, blue eyes

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5
Q

Signs of contagious diseases

A

Mange*
Cornybacterium pseudotuberculosis abscessses
Resp. viral diseases (coronavirus, BVDV)

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6
Q

Prepuce

A

Directed caudally in abscence of erection
Abnormalities: skin lesions (mange), swelling and prolapse

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7
Q

Penis examination

A

Complaints (anesthesia/ sedation): severe swelling, paraphimosis (skin can’t move back up), phimosis (can’t be pulled down), abnormal preputial discharge, presistant frenulum

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8
Q

Scrotal/ testicular examination

A

Scrotum (trauma, lesions/ dermatitis, edema)
Testes (presence @ birth, symmetry)
Testes palpation (freely movable form scrotum, smooth surface)

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9
Q

Testicular measurements

A

Length x width (cm) for llamas and alpacas

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10
Q

Testicular ultrasound

A

Lesions not always palpable
Normal: homogenous parenchyma, hyperechoic rate testis (mediastinum tests)

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11
Q

Semen collection

A

Post coital aspiration (easy, need receptive female)***
Electroejaculation (gen anesthesia and skills)
Artificial vagina (need training of animal)

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12
Q

Semen evaluation (motility)

A

Oscillatory movement before liquefaction
Progressive motility after liquefaction

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13
Q

How is semen liquified?

A

With enzymatic treatment of papain and collagenase

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14
Q

What makes semen evaluation difficult?

A

Viscosity

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15
Q

Common emergencies

A

Preputial swelling or scrotal/ testicular enlargement

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16
Q

Common camelid complaints with infertility

A

Congenital abnormalities
Azoospermia/ oligozoospermia
Tetrazoospermia

17
Q

Ages for castration

A

12-15 months for alpacas
15-18 months for llamas

18
Q

Methods for castration

A

General anesthesia for alpacas: ketamine, xylazine and butorphanol
Standing for llamas: butorphanol

19
Q

Complications of castration

A

Rare (hemorrhage, infection)
Older males can still have male behavior with erection

20
Q

Cyrptorchdism

A

Tests in scrotum at birth
If testes not descended @ 6 months (remain retained)
Most commonly left side
Testicle found in abdomen or at vaginal ring

21
Q

How do you diagnose cryptorchidism?

A

Ultrasound
HCG stimulation test
AMH

22
Q

Cryptorchidism technique

A

Parainguinal
Laprscopic

23
Q

Differentials of preputial swelling

A

Preputial prolapse (masturbation against ground)
Preputial adhesions/ abscesses (trauma, poor)
Trauma/ hematoma
Urolithiasis
Urethral rupture

24
Q

Common causes of infertility in camelids

A

Testicular degeneration
Bilateral congenital testicular hypoplasia
Rte testis cysts
Bilateral epididymal/ vascular deferens aplasia

25
Q

Testicular degeneration

A

Heat stress (>30C)
Fever
>9 years
Trauma/ inflammatory disorders
Chronic debilitating diseases

26
Q

What nutritional deficiencies cause testicular degeneration

A

Severe weight loss
Selenium
Zinc

27
Q

Testicular cysts

A

Between the head of the epididymus and the testicle
Intratesticular
Dx: ultrasound

28
Q

Differentials of scrotal/ testicular enlargement

A

Heat stress: hydrocele
Trauma (hematoma)
Inflammatory process: orchitis
Neoplasia

29
Q

How do you treat scrotal/ testicular enlargement

A

Hydrocele: medical management
Unilateral castration