Learner Objectives -
Equine Reproduction
Discuss the equine estrous cycle. Include the stages,
duration of the stages, signs, steroid hormones, LH pattern and
luteolysis.
Discuss the normal light year and how it
pertains to equine reproduction. What other factors influence the horse.
Describe anestrus (hormonal, behavioral, and
physiologic events) in the
mare.
Describe the signs and the causes of
spring and fall transition in the mare.
Discuss induction of cycling in the mare.
Discuss true polyestrous and silent heat in
mares.
Discuss multiple ovulations in the mare.
Discuss
diestrus ovulations and pseudopregnancy in mares.
Discuss nymphomania in the mare.
Be able to discuss anovulatory follicles in the
mare.
Be able to describe the treatments for spring and
fall transition in the mare.
Be able to discuss a
breeding soundness exam in a mare - steps taken and why they are performed
and the interpretation of the findings.
Know and understand
the reproductive physiology of the mare sufficiently to be able to explain
occurrences and to be able to manipulate the cycle to achieve desired
goals.
Be able to plan and
describe a breeding with a) natural service, b) artificial insemination
with fresh semen, c) artificial insemination with fresh cooled semen, d)
frozen semen. Include
monitoring the mare and manipulating the cycle to time breeding,
pre-breeding assessment, post-breeding management including exams and
therapy (be able to decide if it’s indicated, if so when and how to
treat), pregnancy exams (when).
Be able to plan and describe an embryo transfer
procedure, including recipient preparation.
Understand the importance of early pregnancy
exams, twins and possible alternatives for their management
Understand the factors involved in infertility
and how to manage brood mares to maximize fertility.
Be familiar with the causes of endometritis and how the different
etiologies affect treatment choice and prognosis. Be able to describe diagnosis and prescribe a course of
treatment given a case of persistent mating induced endometritis.
Know the reasons (tumors, normal and abnormal
physiologic causes) for ovarian enlargement -including diagnostic
features, possible treatments and prognosis.
Know the features of normal parturition in the
mare - how to predict when it will occur, guidelines for recognition and
correction/treatment of dystocia, premature placental separation.
Know how to safely induce parturition in a
mare, i.e. guidelines for readiness for birth and methods of induction.
Be able to recognize, describe and treat the
common pre- and postpartum problems in mares (rupture of the prepubic
tendon, uterine torsion, retained placenta, prolapsed uterus, metritis/septicemia/laminitis,
etc.)
Be able to discuss the important features of
the equine placenta and describe post partum examination of the placenta.
Know the important causes of pregnancy loss or
abortion. Be able to describe clinical signs, diagnosis, treatment and
preventative measures for EHV, EVA, placentitis, MRLS, twins, fescue
toxicity and others discussed.
Stallion
Be able to describe a breeding soundness exam
in a stallion, listing the steps in order and interpretation of findings.
Also know and understand how you can influence semen quality during
the procedures.
Know the effects of season on the stallion.
Be able describe preparation of fresh, cooled
equine semen, listing the steps in order and be able to “do the math”
Be able to discuss the current hypothesis
regarding testicular degeneration in the stallion.
Be able to describe how you could differentiate
a gelding from a cryptorchid, tests used, interpretation.
Understand and be able to discuss causes,
diagnosis and treatment for the following conditions in stallions:
hematocele
hydrocele
torsion of the spermatic cord
genital trauma
urospermia
hemospermia
inguinal hernia
Neonatology
Explain the importance of assessing a mare in
the last third of gestation as it relates to fetal well-being. Give
examples of ‘high-risk’ mares.
Regarding physical examination of a newborn
foal, give normal parameters for 1 minute after birth and 1-2 hours after
birth (include HR, RR, temp., time to suck, ‘normal’ activities
Give an example of a direct and indirect cause
of perinatal foal mortality, and a specific disease that results from
each. For each disease, discuss diagnosis, course of disease, treatment
protocol, prognosis, cost of treatment, and expected outcome and
prevention for ‘next year’s foal’.
You are asked to examine an ~8hr. old TB colt
born to a mare that has had 4 viable foals in the last 4 years. Describe
in detail, the physical exam procedure as well as other post-foaling
procedures that you would like to perform.
Regarding FPT (IgG) in foals, discuss the
following points: diagnosis (including age of foal), normal levels at 24
hrs of age; how to treat; volume to treat depending on IgG level,
foal-side testing methods; product availability, method of IgG replacement
therapy, reassessment of FPT post-treatment.
Regarding foal immunity, discuss the following:
incidence of FPT in foals, foal immunity at birth, phagocyte function at
birth, timing of foal GI tract ability to absorb colostral Abs,
predisposing diseases in foal with FPT
A foal born at < ---- days gestation is
immature. Describe the clinical characteristics of a foal that is
dysmature/immature/premature.
You need to refer a 12 hr. old foal to LSU VTH
& C because of extreme lethargy, hypothermia, failure to stand, and
intermittent seizure activity. Discuss in detail, your plan to stabilize
the foal prior to sending it on a 4-5 hr. drive to Baton Rouge.
You have just assisted a mare with delivery of
a term foal. The dystocia lasted approximately 4 hours. The foal’s mm
are pale and it has a rapid but shallow respiratory rate. The foal does
not respond to stimulation. Explain your plan of action and hopeful
outcome.
You have just assisted a mare with delivery of
a term foal. The dystocia lasted approximately 4 hours. The foal is not
breathing, but the mm are slightly pink, the HR is faint and 120 B/min.
Explain your plan of action and hopeful outcome
You examine a 1.5 day old colt that has been
posturing to urinate & continues to strain intermittently. Foal has
slight abdominal distension. Owners say it’s gone on for about 5 hours.
Foal is rolling and pawing in between straining. What is your differential
diagnosis? What is your plan for diagnosis, treatment, & prognosis for
each of the differentials you listed.
Explain the clinical scenario, treatment regime, and
prognosis for a foal with hypoxemic/ischemic encephalopathy with and
without sepsis.
Regarding foal septicemia, what are the 3
likely portals of entry, the 4 most likely bacteria involved, the
treatment regime, clinical course, and prognosis.
Regarding R. equi infections in foals, describe
the pathogenesis and treatment of the pneumonic form. Explain any possible
side effects of treatment options.
Regarding endemic R. equi infections in foals,
describe a prevention and early detection program for a 350 brood mare
farm.
Describe the pathogenesis, diagnosis,
treatment, and future prevention of equine neonatal isoerythrolysis
Regarding diarrhea in foals less than 7 days of
age, what causative organisms are likely? How do you make a diagnosis and
treat foals with enterocolitis?
Describe the clinical description of a 4 week
–old foal with gastric ulcer disease. How to make a positive diagnosis,
treatment and follow-up care.
Regarding antimicrobial therapy for neonatal
foals, what are the characteristics of the ‘first-line’ antimicrobial
treatments of choice? Name 3 different antibiotic regimens for a 4 day old
foal with fever and watery diarrhea. Describe what type of foal monitoring
needs to be performed to determine if the antibiotic choice is
appropriate.
Be able to recognize, describe and treat the common
complications during pregnancy in mares (rupture of the prepubic tendon,
hydrops, placentitis, twins, uterine torsion, uterine tear)
Know the
important causes of pregnancy loss or abortion in the mare. Be able to
describe clinical signs, diagnosis, treatment and preventative measures
for EHV, EVA, placentitis, MRLS, twins, fescue toxicity, Leptospirosis,
and others discussed.
Be able
to discuss the important features of early embryonic death in mares (time
frame of the majority of losses, maternal factors, and embryonic factors).
Be able to discuss the important features of
placental insufficiency in the mare (definition, causes, clinical course
and outcome, and diagnosis).
Explain the importance of assessing a mare in
the last third of gestation. What modalities are used to determine fetal
well-being? What are the reproductive and non-reproductive causes of
high-risk pregnancy?
You have a long-standing client that has
decided that having a pregnant mare would be a fun and unique experience.
Be able to provide a new client with recommendations for all aspects of
optimal care during gestation up to foaling. You will also need to coach
your client of things that might go wrong during gestation and foaling –
what to look for, when to call, etc.
Surgery - Dr. Burba
Be able to give the incidence and
etiology of perineal lacerations in mares.
Be able to describe the different types of perineal lacerations in mares.
Be able to describe the treatments of perineal
lacerations.
Be able to give the indications and describe how
to perform a Caslicks.
Be able to describe the indication for a
urethroplasty in a mare.
Be able to describe the etiology, clinical signs,
and differential diagnoses for granulosa cell tumor in mares.
Be able to describe the diagnostics and treatment
of granulosa cell tumor in a mare.
Be able to give the indications and potential
complications of a colpotomy in a mare.
- Be
able to describe the different types of surgical methods of removing
the testicle in a routine castration.
- Know
the difference between parietal and visceral tunic.
- Be
able to describe the surgical technique of performing a routine
castration including pertinent points of instrument placement.
- Be
able to list and describe potential post-castration complications.
- Be
familiar with the epidemiology of cryptorchism in the horse.
- Left
vs right
- Inquinal
vs abdominal
- Be
able to describe diagnostic techniques to determine is a horse has a
retained testicle.
- Be
able to describe surgical approaches to removing a retained testicle.
- Inguinal
approach
- Laparoscopy
- Know
the common neoplasia of the equine penis and treatment.
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