For freshwater-reared salmonids (trout and salmon) and catfish.
About Romet® 30
Romet® 30 is an antimicrobial powder containing sulfadimethoxine with an ormetoprim potentiator. Romet® 30 works by interfering with the folic acid (a Vitamin B) synthesis pathway. Romet® 30 is typically used to treat Furunculosis and ESC.
Romet® 30 causes no toxic problems in fish or humans, and tissue examinations revealed no changes in muscle, kidney or other critical organ samples as animals gain folic acid from a healthy diet.
Production
Romet® 30 must be mixed in with the fish feed at the feed mill. Unfortunately feed mills are not always likely to mix Romet® 30 due to a convenience issue.
Withdrawal
Catfish
Romet® 30‘s withdrawal period can be as short as 3 days for catfish. (This means that with a 5-day treatment period and 3-day withdrawal period, a catfish treated with Romet® 30 can be slaughtered 8 days after the drug is initiated.)
Freshwater-reared salmonids (trout and salmon)
Freshwater-reared salmonids (trout and salmon) have a required 42-day withdrawal period from Romet® 30 before being slaughtered. Withdraw time is dependent on water temperature.
*Compared to other drugs, Romet® 30 has a shorter depletion time in the body and is rapidly broken down in feces and aquatic sediments.
Use Directions
Preparation of medicated feeds
Establish the weight of fish to be treated and calculate the amount of feed needed per day according to fish size and water temperature. Calculate the amount of Romet® 30 required for medicating the feed at the rate of 16.7 g of Romet®30 per 100 kg (7.6 g of Romet® 30/100 lbs) of fish body weight per day.
Medication of feed before pelletizing or extruding
Thoroughly mix the calculated amount of Romet® 30 into the mash feed prior to pelletizing or extruding. Refer to the dosage table below for registered levels of use.
Feed Intake of Fish as Percent (%) of Body Weight
| Feed Intake of Fish as Percent(%) of Body Weight | Pounds of Romet® 30 per Ton of Feed |
|---|---|
| 1.0% | 33.30 |
| 2.0% | 16.70 |
| 3.0% | 11.10 |
| 4.0% | 8.33 |
| 5.0% | 6.66 |
| 6.0% | 5.55 |
Medication feed after pelletizing
Prepare a liquid slurry by suspending Romet® 30 in edible vegetable oil or a 5% gelatin solution. Coat the pelleted fish feed with the slurry, which should be constantly agitated to ensure uniform suspension of the Romet® 30 during addition. As a general rule, 10 gallons of slurry is required to coat 2000 lb (1T) of pellets. The coated pellets should be allowed to air dry prior to bagging. Rebag and store under proper feed storage conditions.
At a Glance
Species: fresh water reared trout, salmon and catfish
Category: therapeutics
Diseases: furunculosis and ESC
