Evaluation of Treatments for Induction of Ovulation in Northern Pike (Esox lucius L.)

Özet

Various induction protocols were compared with the aim to reach ovulation in northern pike (Esox lucius L.). The effectiveness of salmon D-Argµg kg-1 (groups GnRHa 1 and 2), GnRHa at 50 and 100 µg kg-1 in combination with 8 mg kg-1 metoclopramide (groups 3 and 4), GnRHa at 50 and 100 µg kg-1 emulsified in Freund´s incomplete adjuvant (FIA) (groups 5 and 6), and GnRHa at 50 and 100 µg kg-1 emulsified with FIA 8 mg kg-1 and metoclopramide (groups GnRHa 7 and 8). These treatments were compared to indoor controlled conditions (Group ICC, injected with saline solution, without hormonal treatment) and two traditional treatments: 3 mg kg-1 carp pituitary (Group CP) and ambient outdoor conditions (Group AOC, injected with saline solution only, without hormonal treatment)