Site icon 3L Fish

Spawning Hormones

Spawning Hormones
Our Products
Spawning Hormones
Ovaprim

Ovaprim is a sterile injectable liquid that contains Syndel’s patented sGnRHa and a dopamine inhibitor. It is injected into the fish during the spawning season to promote and facilitate reproduction of many species of fish. Using Ovaprim, time to ovulation following injection is highly predictable, with high egg fertility and viability.

Ovaprim can be used in any population of fish during or shortly before the spawning season. When used within a spawning population, Ovaprim will compress the spawning season of cold-water fishes to within 1-2 weeks post-injection. For warm water fishes, ovulation times can be shortened to 24-48 hours. There is no substitute for well-described broodstock performance and the best results for using Ovaprim are in stocks with a recorded spawning history.

Ovaprim fish spawning hormone
Code Presentation
10034
10mL per vial (20ug sGnRHa/mL)

Dosage & Application:

0.5 ml/kg of fish body weight.

Dose may vary among species and locations. Male fishes may require a reduced dose (~1/2 of female’s dose).

Ensure that an adequate ratio of males and females are induced at the same time.

For most carps, only a single dose of Ovaprim is required.

For some catfish, a split dose of one quarter (primer dose) and three quarters (second dose) may be required, 6-8 hours apart.

General Instructions:

Anesthetize fish with Tricaine-S (MS-222) at recommended level prior to the injection. Be sure to mix it thoroughly BEFORE adding the fish. Always handle fish gently, and only when necessary. Avoid contact between the anesthetic solution and eggs or milt.

Ovaplant-L

Ovaplant-L is the LIQUID version of Ovaplant, a slow-release spawning inducer containing a potent analogue of a naturally occurring brain peptide, sGnRHa for maturation and ovulation of fishes. Sterile injectable liquid form of Ovaplant allows users to extract and apply an ideal dose for a wide range of fish sizes.

Ovaplant-L is effective in synchronizing, advancing maturation and ovulation and helps increase milt production. It is also designed for the marine finfish as well as larger freshwater species.

Code Presentation
10035
20mL per vial (100 µg sGnRHa/mL)

Dosage & Application:

  • 10ug/kg of fish body weight in a single injection.
  • Inject as a single slow-release injection.
  • Can be injected immediately prior to the normal spawning season.
  • Repeat injections may be given to fish treated long before normal spawning.
Product Information
Main Uses Of Ovaplant-L

An advanced spawning date gives producers a greater flexibility in marketing eggs and offspring. It also has many beneficial downstream effects that are realized when spawning is confined to a predictable and defined period.

Often fish in a population will spawn over a prolonged period. Ovaplant-L can compress and shorten the spawning season that permits optimization of time and resources.

Sometimes handling or other stress causes valuable broodstock to stop maturing after the process has begun. Ovaplant-L can help to restart maturation in a natural way without affecting gamete viability.

Chronic problems of milt shortages are commonplace in aquaculture. This may disrupt detailed breeding programs. Ovaplant-L serves to increase milt production and lengthen the time males will produce.

LHRHa

LHRHa is an analogue of mammalian luteinizing hormone releasing hormone used for fish reproduction. Make up only enough stock solution as will be required for each day’s dosage. Fish should be anesthetized with Tricaine-S and weighed prior to injection.

Code Presentation
10020
1mg
10021
5mg

Dosage & Application:

Single injection 20ug/kg, ovulation 15-18 hours later.

Double injection 5ug/kg Primer, 15ug/kg Secondary with 18-20 hours interval, ovulation between 4-8 hours after last injection.

Three injections of 10ug/kg at interval of 12 hours, ovulation after 15-18 hours after third injection.

LHRHa can be diluted in either distilled water or saline solution (0.6-0.9%).

Ova-RH

OvaRH is a patented molecule that is a synthetic analogue of Salmon GnRH. It is up to 17 times more potent than LHRH in fish including carp and catfish species. OvaRH is effective in many species of fish including salmonids and warm water fishes.

Code Presentation
10080
1mg
10081
5mg

Dosage & Application:

5-10μg/kg of fish body weight.

Dose may vary among species and locations. Males may require a reduced dose.

Ensure that an adequate ratio of males and females are induced at the same time.

From the bottle of OvaRH withdraws only enough solution required for one fish.

HCG – Human Chorionic Gonadotrophic

HCG is a gonad stimulating hormone, used either alone or with LHRHa to induce ovulation in various species of fish, particularly marine finfish.

Code Presentation
10070
10000iu per vial, 10 vials per box

Dosage & Application:

  • Dissolve in saline water before injection
  • 1000-1500iu/kg of fish body weight.
  • Dose may vary among species and location.
  • On groupers, use triple injection of 1000iu/kg at 12 – 24 hours interval, 
    ovulation at 12 up to 48 hours after last injection.
Exit mobile version