Effects on Growth of Juvenile Crayfish (Astacus leptodactylus Eschscholtz, 1823) Feeding Different Protein Levels

Authors : Gülşen Uzun Gören

Pages : 58-64

Doi:10.58626/menba.1525392

View : 75 | Download : 65

Publication Date : 2024-12-28

Article Type : Research Paper

Abstract :The effects on growth of juvenile crayfish (Astacus leptodactylus Eschscholtz, 1823) fed diets with different protein levels were investigated. The feed groups used in the experiment were trout feed (A), raw potato (B) and raw carrot (C). A total of 160 crayfish were used in the study with an average weight of 0.20±0.01 g and an average length of 2.06±0.03 cm. The experiment was conducted over a period of 12 weeks. At the end of the experiment, it was determined that the average weights of juvenile crayfish fed with different diets were between 0.51±0.07 and 1.18±0.17 g and the average lengths were between 2.45±0.16 and 3.33±0.18 cm. It was observed that the relative changes in length and weight increases were also different between the groups. Statistically, the difference between lengths and groups (F=21.59; p<0.01), and between weights and groups (F=28.03; p<0.01) were statistically significant. In the study, it was determined that the difference between the groups fed with potato and carrot was not significant in terms of length and weight averages, while the length and weight averages in the group fed with trout feed were statistically different from the other two groups (p<0.05). At the end of the experiment, the absolute growth values of the groups fed with trout feed, potato and carrot were found between 1.28, 0.52 and 0.39 cm in length and 0.98, 0.34 and 0.31 g in weight, respectively. The proportional growth values of the groups fed with trout feed, potato and carrot were 49.23%, 25.24% and 18.93% in length and 490%, 170% and 155% in weight, respectively. At the end of the experiment, the best growth (both in weight and length) was realized in the group fed with trout feed.
Keywords : Kerevit, Astacus leptodactylus, besleme, büyüme