Ionophores & Implants Flashcards
What are ionophores?
Carboxylic antibiotics
T/F: Ionophores are medically important
False
Why do we love ionophores?
Increase efficiency of energy metabolism of ruminal bacteria
Improve nitrogen metabolism of bacteria
Retardation of digestive disorders resulting from abnormal rumen fermentation (bloat)
Basically: we put less in and they put more out! Magic!
What are the two commonly used ionophores?
Monensin (Rumensin) and Bovatec (Lasalocid)
T/F: Ionophores create slightly better environment for propionate producing bacteria.
True - increased propionate
What are some other side benefits of rumensin and lasalocid?
Decreases bloat risk by decreasing slime producing bacteria
Decreases fly pupae in feces???
Helps a lil with atypical interstitial pneumonia
Do ionophores work better on concentration or roughage diets?
Works on both!
Who is most sensitive to monensin?
Horses!
Can also be toxic to sheep and cattle if fed enough
Beta-agonists are ______ agents
Repartitioning
Per google, a repartitioning agent is “an agent which will direct substrates away from adipose tissue depots and towards muscle accretion”
When do producers feed beta-agonists?
Last 28-42d of feeding period
What kinda things do we use as growth promotants?
Hormones! - Estrogen, Testosterone, Progesterone
What group do we most commonly use growth implants for?
Feedlot cattle
Most last 90-100 days, some 200 days
T/F: New guidelines from the FDA say that implants can be used year-round, regardless of production stage.
False - implants can only be used once in each phase of calf production (unless labeled for re-implant)
- Cow-calf
- Stocker
- Feedlot
Where are growth implants administered?
Middle third of the ear
If the middle third of the ear has been damage, place implant on the top of the ear
What is the key to using growth implants?
Must be gaining well to begin with
Return is increased gain of 10-15%
Better return if you’re getting 15% gain on 2lbs/day compared to 15% on 0.25lbs/day
