Tehnike, ki se uporabljajo za inducirano vzrejo, se lahko razlikujejo med vrstami rib, odvisno od njihovih reproduktivnih lastnosti in plemenskega vedenja. Nekatere pogosto uporabljene metode vključujejo:
1. okoljska manipulacija:
- Temperature control:Manipulating water temperature to mimic natural seasonal changes can stimulate the reproductive system of certain fish species.
- Photoperiod manipulation:Adjusting the light-dark cycle to simulate day length changes can influence fish reproduction as it is linked to hormonal regulation.
2. dajanje hormonov:
- Injections:Hormones like gonadotropin-releasing hormone (GnRH), luteinizing hormone (LH), and human chorionic gonadotropin (hCG) can be injected to induce maturation and ovulation in fish.
- Hormone implants:Some hormones can be implanted in fish as slow-release devices, providing a sustained release of hormones to induce breeding.
3. Odstranjevanje in oploditev:
- After hormone treatment or environmental manipulation has induced ovulation, fish are gently 'stripped' by applying pressure to the abdomen to release eggs (females) or milt (males).
- Gnojenje dosežemo z mešanjem jajc in Milt v nadzorovanem okolju po ustreznih sanitarnih protokolih za preprečevanje kontaminacije.
4. Inkubacija:
- Oplojena jajca se skrbno prenesejo na določene inkubatorje ali valilne enote.
- Vzdržujejo se ustrezne kakovosti vode, temperature in prezračevanja, da se zagotovi optimalen razvoj in izvalitev jajc.
Inducirana vzreja v ribah ima več prednosti, vključno z:
- Nadzorovana reprodukcija:rejcem rib omogoča načrtovanje in obvladovanje razmnoževanja, s čimer zagotavlja zanesljivo ponudbo potomcev skozi vse leto.
- Genetic selection:Facilitates selective breeding to enhance desirable traits, such as growth rate, disease resistance, or specific phenotypic characteristics.
- Off-season production:Enables the production of fish outside of their natural breeding season, expanding market availability and increasing production efficiency.
However, it is important to note that induced breeding may require skilled personnel, specialized facilities, and knowledge of fish reproductive biology to ensure successful results. Pravilne prakse upravljanja so bistvene za zmanjšanje stresa in vzdrževanje blaginje rib med procesom reje.