| Weight (kg) |
0.3 |
| Main Material |
liquid |
When to Use - Ovaprim has the following uses as below :
- stimulates milt production for a longer period and for greater volume,
- moves fish forward in the spawning season,
- maximizes reproductive potential in all spawners within a population,
- conserves genetic material in a population, between populations or in endangered stocks.
- coordinates maturation during the normal spawning season: spawns a population in a shorter period of time,
- maximizes hatchery labour and infrastructure by concentrating efforts,
- moves offspring through lifestages as a tightly-packed group according to spawning date,
- reduces overlap of hatchery duties due to protracted development of hatchery fish.
- may re-start stalled maturation,
- using Ovaprim post-transport may reduce the incidence of transport shock
How to Use :
Anaesthetize the fish as directed by a veterinarian using the appropriate dose of tricane methanesulphonate (TMS) or metomidate (Aquacalm). Once anesthetized, weigh the fish and return to the anaesthetic bath. Determine the dose for that fish. If the population has a small variance in median weight, a single dose of Ovaprim can be used for all fish that negates weighing. Work with sterile equipment and clean surfaces to limit infection potential.
For use in salmonids: invert the fish and hold head down in the anaesthetic bath. This reduces the pressure on the fishes gills caused by the weight of internal organs as you invert and suspend the fish. Under the fishes left pelvic fin is a depression that has few or no scales. This area also has a thin body wall. At this location penetrate the body wall and slowly deliver the Ovaprim into the body cavity. The suspended fish will have its gonads at the forward portion of the body cavity and the left gonad is generally smaller due to the positioning of the liver. Observe if there is any bulging of adjacent tissues; this indicates an intramuscular or subcutaneous injection and reinsertion of the needle will be required. Before withdrawing the needle, leave it in place for a few seconds after delivery of the Ovaprim; this will prevent back-seepage. Transfer the fish to a clean aerated bath to recover.
For other, smaller species: secure fish on a soft wet surface such as a sponge. The heat from your hand may harm some smaller, coldwater fish; handling for extended periods should be avoided. Place the fish on its side and inject into the rear abdominal cavity to avoid contact with internal organs. Smaller fish may require and appropriate needle size that will take longer to deliver the liquid. As with salmonids, leave the needle in place for a moment after delivery to prevent seepage. Transfer the fish to a clean aerated bath to recover.
Precautions
- Ensure instruments and affected areas are clean.
- Keep anaesthetics and Ovaprim out of direct sunlight.
- Use a needle guard to limit the penetration of the needle into the fish.
- Ovaprim is vicious. Use an appropriately gauged needle and syringe. Do not warm the liquid.
- Intramuscular injections are also possible, but the injection site may bleed.
- Check that any other treatment of the fish is not contraindicated.
