Swine NAVLE Practice Exam Questions And
Answers 100% Pass
Fetal deaths that occur later than 35 days of gestation are most likely to be observed at
farrowing as: - answer✔Mummies
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Chapter 66—Coccidia and Other Protozoa
A young swine producer and his wife have just taken over management of a 800 head
farrow to finish farm. They pride themselves on efficient management and high standards
of animals health and welfare. You see evidence of this in every aspect of their farm, but
one area of contention you have with them is rodent control. Their solution to this seems to
be founded on a hearty feline population that roams the farm. The producers frequently
save back one pig at marketing time for their own consumption. Given this scenario, which
disease poses their biggest zoonotic health risk? - answer✔Toxoplasma gondii
Of the following primary pathogens that affect pigs, which one is least likely to be
adequately prevented or controlled with a vaccination program? - answer✔PRRSV
Your swine practice has a 10% contingent of clients with non-conventional management
systems, such as outdoor/pasture housing. One of these clients has been 50 sows and 4
boars, all of which practice natural breeding. This producer has been having increased
numbers of sows returning to estrus after breeding. There are few other clinical signs
noted, with the current herd in good health and body condition other than a decreased
reproductive performance. The only thing you have noted is an increases occurrence in the
boars of granulomas and absecesses, and one boar had edematous testicles for a few
weeks. However, you have attributed those signs in the boars to the fact that they are
housed together and occasionally tussle with each other. You have submitted herd serology
and tissues from two litters that aborted in the past 6 months, finding negative test results
for PRRSv, Porcine parvovirus, and leptospirosis. Assum - answer✔Brucella suis
Which of these postures suggests that the effective temperature is more likely too cold for
the pigs than too warm? - answer✔Sternal with legs tucked underneath
You are called to a 2400 head breed to wean farm that has been experiencing an increased
number of piglets that are falling behind immediately after birth. Two farrowing rooms in
particular at one end of the building are affected. The piglets in these rooms are born with
no dystocia and in numbers average for the industry, but fail to thrive the first 3-4 days of
life. When you examine the piglets, you can see they have a gaunt appearance, are
underweight for their age, remain close to the sow even when not feeding, and some minor
diarrhea is noted. Before examining the females, you run through a list of differentials.
Which of the following factors is least likely to be influencing the females' poor milk
production? - answer✔High levels of fiber in the lactation feed
Which of the following values are NOT CORRECT and would not represent expectations for
normal biological performance for the associated parameter? - answer✔Finisher daily
weight gain =4.9#
You are called to investigate a group of sick pigs that have just recently been placed in the
nursery. They had a delayed arrival due to traffic problems from the inclement January
weather. Almost 20% of these piglets are anorexic, thin, and sneezing. Most of the piglets
are piled together in groups. Approximately 5% of the group has been pulled to the sick
pen because severe dyspnea and neurologic signs that range from unsteady walking to
lying on the pen floor and paddling. So far about half of the severe cases respond to
intensive care and treatment with ceftiofur crystalline free acid. Your diagnostic workup
includes a necropsy of mortalities and a culture of all tissues in the submitted pigs.
Isolation of the causative agent from which organ would be significant and most aid your
definitive diagnosis? - answer✔Brain
Which of these postures suggests that the effective temperature is more likely too warm for
the pigs than too cold? - answer✔Lateral recumbency with legs stretched out from the
body
A farmer is receiving pigs from a new supplier at the end of the nursery phase and entering
them into her finisher farm to raise for market. She has asked you to review the
performance data for the group from the 54 day nursery phase to see if you have any
concerns about health or growth. Which of the following is most likely to suggest that there
was a growth performance or health issue? - answer✔Daily average weight gain = 0.5
lbs/day
The normal respiratory rate for a recently weaned pig weighing 12 pounds is: -
answer✔25-40 bpm
An established sow herd is experiencing severe shoulder lesions in sows that impact sow
movement, feed consumption and reproductive performance. Approximately 10% of sows
are affected and the lesions are usually bilateral. Your client asks for a treatment strategy
to fix the problem and lower the prevalence. What is the best strategy? - answer✔Cull the
most severely affected sows, treat the remainder of affected animals with topical
antiseptics and increase feeding rate for the 10% of sows with the lowest body condition
scores
You are called to sow farm where piglets are developing creamy, pasty diarrhea within 48
hours of birth and it will last up to 5 days. The piglets display a rough hair coat and perineal
fecal staining. The piglets typically recover but appear to lag behind other litter mates that
were not affected. You complete several necropsies on affected piglets and find that the
small intestine is flaccid, thin walled, and gas filled, with watery contents and no blood, and
the large intestine is distended, with whitish, pasty contents, but without lesions.
Inflammation of the mucosa is mild and the stomach does not have any lesions. After
submitting diagnostics it is found that the sole major toxin produced is C. perfringens alpha
toxic (CPA). What is the most likely cause of these clinical signs and diagnostic results? -
answer✔Clostridium perfringens Type A Enteritis
You are called to visit a wean-to-finish barn that has been experiencing a recent increase in
mortality. Pigs arrived at the 2400 head barn 2 weeks ago, and the mortalities began
approximately 1 week after pigs arrived. The caretaker explains that the affected pigs first
appeared gaunt or "slab-sided" with an increased respiratory rate. A portion of these pigs
worsen and develop labored abdominal breathing or "thumping" and some of these die.
You post a few of these pigs and observe gross lesions that are consistent with Glasser's
Disease caused by Haemophilus parasuis. Which of these lesions are LEAST LIKELY to be
characteristic of Glasser's Disease? - answer✔Interlobular pulmonary edema
Which of the following drugs currently require a Veterinary Feed Directive (VFD) for legal
use in feed? - answer✔Pulmotil 90 (tilmicosin phosphate)
You are asked to evaluate artificial insemination (A.I.) practices at a farm. Which of the
following observations that you make about their A.I. process is LEAST consistent with
current A.I. technology? - answer✔There are 8,000,000,000 to 12,000,000,000 live sperm
cells per dose
You are presented with a case that involves the sudden death of 60 pigs in a barn of 1000.
The owner reports the pigs appeared to be fine yesterday. The pigs are currently in the
finisher phase of production and weigh about 155 lbs. You notice that the dead pigs have
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