Lecture 3: Reticuloruminal disorders 2 (NEED TO FINISH) Flashcards
Subacute ruminal acidosis results when the ph drops to < ____ and there’s a ______ in bacterial growth rates and a decrease in _____ activities of _____ microorg. There is an increase in ______ production.
Subacute ruminal acidosis results when the ph drops to < 5.8** and there’s a **decrease** in bacterial growth rates and a decrease in **enzymatic** activities of **fibrinolytic** microorg. There is an increase in **lactate production.
Acute ruminal acidosis is SEVERE and can result in DEATH. The pH drops to < ____, there’’s a decrease in ______, and an increase in _______ bacterias. There is a _____ in D(-) LACTATE
Acute ruminal acidosis is SEVERE and can result in DEATH. The pH drops to < 5.5**, there’’s a decrease in **S.BOVIS** , and an increase in_D-Lactobacillus (lactate producing)_ bacterias. There is a **increase in D-(d isomer) LACTATE
In a normal rumen, there is an _____ in rapidly fermentable carbs (starch+sugars), an _____ in VFAs and ______ growth rates, and a decrease in ____
In a normal rumen, there is an increase** in rapidly fermentable carbs (starch+sugars), an **increase** in VFAs and **bacterial** growth rates, and a decrease in **pH
Subacute rumen acidosis is also commonly called _____ for short?
SARA
What is rumen ph seen when SARA is present and what else changes with it?
< 5.6 (Or 5.5 for an extended period) and the associated changed with the VFA’s in the rumen
True or False not enough effective fiber can cause SARA
True
Proprionic acid surge caused by increase in lactic acid fermenters causes this? WHen do we see it in feedlot and dairy cows?
- Fat Cow Syndrome (SARA)
- feedlot in rounding off phase
- dairy cows; prolonged lactation
What conditions involving the liver and vena cave can cause SARA?
- Liver abscess
- Posterior Vena Cava Thrombosis
With SARA from Liver abscess, they are often described at poor doers and you will see a hypo-______, and recurrent _____, often (symptomatic or aymptopatic??) and regarded as (normal or abnormal at slaughter?)
What can liver abscess cause in reference to the timeline of death and subsequent pathology?
With SARA from Liver abscess, they are often described at poor doers and you will see a hypo-albuminemia**, and recurrent **epistaxis**, often (symptomatic or **aymptopatic**??) and regarded as (**normal or abnormal at slaughter?)
- Acute death
- pururlent embolic shower
How does ruminitis cause liver abscessed and what two bacteria are often involved? How do we treat and what is the prognosis?
- Rumenitis facilitate penetration of bacteria. T pyogenes and F necrophorum into portal system
- Prognosis=poor
- Treat: feed antibiotics as prophylacxis
With SARA’s involvement with laminitis; _____ acid kills gram ____ bacteria with ______ release. _____ causes ischemia of _____ which results in abnormal _____ formation, hemorrhage, and ____ ____ lesions
With SARA’s involvement with laminitis; lactic** acid kills gram **negative** bacteria with **endotoxin** release. **DIC** causes ischemia of **corium** which results in abnormal **horn** formation, hemorrhage, and **sole horn lesions
With SARA, acute death syndrome is caused by what? Also state another syndrome that condition causes
Clostridium perfringens enterocolitis also causes hemorrhagic bowel syndrome
True or False:
- Mycotic rumenitis/abomasitis/proctitis
- Mucor; Rhizopus; Absidia; Mortierella
are all involved with SARA
true
True or False:
Abomasal ulceration and displacement can be linked with SARA
true!
Thiaminase producing bacteria cause this neural condition associated with SARA. State the condition and the bacteria
Cerebro-cortical necrosis
- C. sporogenes and B. thiaminolyticus
