Egg and Larval Growth Performance of Brown Trout (Salmo trutta sp.) in Commercial Farm Conditions


Engin S. , Altan Ö.

Aquatic Sciences and Engineering, vol.37, pp.100-104, 2022 (Journal Indexed in ESCI)

  • Publication Type: Article / Article
  • Volume: 37
  • Publication Date: 2022
  • Doi Number: 10.26650/ase20211048408
  • Title of Journal : Aquatic Sciences and Engineering
  • Page Numbers: pp.100-104

Abstract

The aim of this study is to determine the egg and larval growth performance of brown trout (Salmo trutta sp.) at a constant high water temperature under commercial farm conditions. Eggs were taken from 450 female broodstocks with an average weight of 5.09±0.29 kg. The eggs placed in the incubators were observed on the 14th day and kept at a constant temperature of 12.5°C. Then larvae began to hatch on the 29th day and all the eggs were fully hatched by the 31st day. The incubation period was determined as 350 days /°C. In the study, an average survival rate was determined as 21.07%±5.16% until the end of the larval stage. A significant relationship was found between the rate of eggs that hatched and the survival rate after the larval period had ended (p<0.05). After 120 days of larval feeding, larvae weighing 0.15 g reached 9.26±1.13 g. During this period, the feed conversion rate (FCR) and specific growth rate (SGR) values were determined as 1.21±0.09 and 1.23±0.72 respectively.