Cattle Diseases Flashcards
Is papple shape abnormal for jersey cows?
No
What does a reverse D contour usually mean?
Bloat
What does a pear contour usually mean?
Ascites or intestinal obstruction
What does a papple contour usually mean?
Abomasa impaction
What does beef BCS go to?
1-9
What does dairy BCS go to?
1-5
If a dairy cow has a V from pin to hook what body condition score does that mean?
<3
If a dairy cow has a U from pin to hook what body condition score does that mean?
> 3.25
What nerve does spastic peresis affect?
Tibial nerve (common in calves)
If the dew claw is close to the ground on a functional leg, what does that mean?
Shows chronicity
What is the lameness score through?
1-5
What is 1?
Normal
What is 2?
Mild lameness
Standing - level back
Walking - arches back
What is 3?
Moderate lameness
Arches back standing and walking
What is 4?
Lame
Above + favors one or more feet
What is 5?
Severe lameness
3 legged lame
Which legs see the most lameness?
rear
Where is most the lameness?
90% in foot
What may teats pointing out indicate?
Rupture of suspensory ligament
What does a black plate test test for?
Clinical mastitis
What does CMT test for?
Subclinical mastitis
What should be the last part of the physical exam?
Usually the udder exam
What are 3 reasons to wear gloves when examining the udder?
Dont transfer staph
Easily clean gloves
Setting an example
How much reagent do you use for a CMT?
Equal milk and reagent
What are the 5 different scores for CMT?
Negative, trace, 1, 2, 3
When should CMT score be done?
At the beginning of milking
Is an exploratory laparotomy diagnostic or therapeutic?
Diagnostic (but can be both and prognostic)
What are the 7 (sorry) indications for exploratory laparotomy?
Abdominal pain
No feces for >24hrs
Abnormal abdominal contour
Low chloride
Blood in feces
Ping
High lactate
Can an RDA be fixed from the left flank? right flank?
Not from left
Yes from right
Can a RAV be fixed from the left flank? right flank?
Not from left
Yes from right
Can hardware disease be diagnosed from right?
Yes (not from left)
Basically, unless its an LDA, approach from the right flank for an exploratory
What bacteria is wooden tongue?
Actinobacillosis
What bacteria is lumpy jaw?
Actinomycosis
What can salivation (ptyalism) cause?
Acidosis
What can stomatitis be caused by?
Viral, physical, or chemical injury
Grasses with foxtails, cactus, etc
What is clinical sign of actinobacillosis ligneresii (wooden tongue)?
Tongue thickened, hard, protruding from mouth
How to treat actinobacillus ligneresii?
Penecillin G and sodium iodide
What is full name of actinomycosis (lumpy jaw)?
Actinomycosis bovis
What are clinical signs of actinomycosis bovis?
Hard, non-painful swelling of the bone
What causes actinomycosis bovis?
Damage to oral mucosa allowing access to deep tissue
How to treat actinomycosis bovis?
Penicillin and sodium iodide
What is another name for necrotic laryngitis?
Calf-diptheria
What is calf-diphtheria?
infection of laryngeal and tracheal mucosae and cartilage
What is the bacteria that causes calf diphtheria?
Fusobacterium necophorum
What is the age for calf diphtheria?
3-20m
T/F: Wooden tongue is associated with lesions of the tongue caused by consumption of scabrous feeds?
True
Wooden tongue is characterized by which of the following?
Initial cellulitis by development of pyogranulomas
The term ptyalism means which of the following
Excessive salivation
Which of the following is a reasonable explanation for why cows with wooden tongue have difficulty swallowing?
Cows with wooden tongue are very painful due to swelling, inflammation and contraction of the muscles attached to the hyoid apparatus
Which of the following statements are true?
Wooden tongue responds to aggressive therapy whereas lumpy jaw does not
Atypical actinobacilloisis refers to cattle with infections in the?
Anywhere in the body except for th tongue
Lumpy jaw is characterized by which of the following?
A hard, non-painful swelling of the mandible
Caudal pharyngeal trauma is often the result of
Improper oral medication equipment
Consumption of foreign bodies
Poor quality hay with foxtails
Before evaluating a cow with a disease/disorder of the oral cavity which of the following should be ensured?
Ensure the cows head/neck are properly immobilized to prevent injury to you or the cow
Which of the following surgical approaches are most appropriate to with retropharygeal abscesses
Cow in lateral recumbence, place needle into abscess and dissect down the needle until you can open abscess and marsupialize it to skin
Calf diphtheria (necrotic laryngitis) is commonly associated with which of the following?
Recently weaned calf that calls for his mother constantly
Young calf recently infected with respiratory virus (IBR)
Calf that developed histophilus somnii septicemia and was bacteremic
The most appropriate approach to working up a necrotic laryngitis case is to?
Place tracheotomy tube, allow calf to relax, regain oxygenation and then restrain for endoscopic exam
Which of the common clinical signs listed below are associate with necrotic laryngitis (calf diphtheria)
Fever
You are asked by a producer to provide input into a young beef heifer with hand, swollen tongue that started 42 hr ago. They would like to know what treatment is most effective with the shortest withdraw time. Which of the following would be most effective in this case?
Sodium iodide IV. Withdraw 14 days
What are the most common things to cause chock in cows?
Hedge apples
What is the most serious/life threatening complication with choke?
Free gas bloat
What is a major risk with rumen trocar?
Peritonitis
What are 3 things that lead to primary rumenoreticular dysfunction (indigestion)?
Poor quality feed
Spoiled feed
Acidosis
How many contractions are in a cow’s contraction cycle?
2
What is a primary contraction?
1/minute.
Runs caudally from reticulum through dorsal then ventral rumen sacs
What is a secondary contraction?
Runs caudal to cranial to push gas cap into cardia
What are 4 inhibitory inputs for primary contractions?
High tension in reticulum
Tension in abomasum
Epithelial VFA receptors in rumen
Pain
What is an important excitatory input?
Buccal receptors in mouth that respond to chewing
What does vagal indigestion mean?
A group of motor disturbances that hinder passage of ingests from the rumenoreticulum or abomasum or both
Which branch of the vagus nerve is the rumen innervated by?
Dorsal branch
Which branch of the vagus nerve innervates the omasum and abomasum?
Ventral branch
What is omasal transport failure?
Vagal indigestion from an empty omasum and abomasum
Rumen has poor water absorption leading to hypovolemia even though cows will continue to drink
Leads to “L” or “papple” shape
What is pyloric functional stenosis?
Accumulation of ingesta in omasum and abomasum