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Journals / Journal of Limnology and Freshwater Fisheries Research / 2017 / Cilt: 3 - Sayı: 3

Effect of Different Feed and Stocking Density on Survival and Growth Performance of Astacus leptodactylus (Esch., 1823) Juveniles

Farklı Yem ve Stok Yoğunluğunun Astacus leptodactylus (Esch., 1823) Juvenillerinin Hayatta Kalma ve Büyüme Performansı Üzerine Etkisi

Kamile Gonca EROL
Şakir ÇINAR
Behire Işıl DİDİNEN
Remziye ÖZKÖK
Nihal CİLBİZ
RAMAZAN KÜÇÜKKARA
Levent TÜMGELİR
Mustafa CEYLAN
Turgay MEKE
SEVAL BAHADIR KOCA
ÖZNUR DİLER
Pages
159–165
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The result of our study also revealed that stocking density had a significant effect on survival rates of crayfish juvenile fed with both feeds

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this study was to investigate the combined effects of two stocking densities (650 and 1300 juveniles/m2 ) and diets (live feed - Daphnia magna and commercial trout feed) on survival rate and growth performance of Astacus leptodactylus juveniles.
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Key Findings & Data:Final survival rate and growth paremeters of juveniles were evaluated at the end of experiment (90 days).
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Conclusion & Impact:The result of our study also revealed that stocking density had a significant effect on survival rates of crayfish juvenile fed with both feeds
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The aim of this study was to investigate the combined effects of two stocking densities (650 and 1300 juveniles/m2 ) and diets (live feed - Daphnia magna and commercial trout feed) on survival rate and growth performance of Astacus leptodactylus juveniles. Juveniles in the second developmental stage were used in the experiment. Final survival rate and growth paremeters of juveniles were evaluated at the end of experiment (90 days). The results of this study indicated that diets were not found effective on survival rates, though increasing stock densities reduced survival rates. The best final survival rate as 21.99 %, was achieved in the group fed with live feed and kept under the 650 juveniles/m2stocking density, whereas the lowest survival rate values as 10.84 % was obtained in the group fed with trout pellet and kept under the 1300 juveniles/m2 stocking density. At the end of experiment, the highest final body weight was found in group of at 650 juveniles/m2 stocking density and fed with trout feed. The result of our study also revealed that stocking density had a significant effect on survival rates of crayfish juvenile fed with both feeds

Özet

Bu çalışmada, iki farklı yem (canlı yem-Daphnia magna ve ticari alabalık yemi) ve stok yoğunluğunun (650 ve 1300 juvenil/m2) Astacus leptodactylus yavrularının hayatta kalma ve büyüme performansı üzerine kombine etkileri araştırılmıştır. Denemede II. dönem yavrular kullanılmıştır. Deneme sonunda, yavruların hayatta kalma ve büyüme parametreleri değerlendirilmiştir. Bu çalışmanın sonuçları, diyetlerin hayatta kalma oranları üzerinde etkili olmadığını, ancak artan stok yoğunluğunun yaşama oranlarını azalttığını göstermiştir. En iyi yaşama oranı % 21,99 olarak 650 juvenil/m2 stok yoğunluğunda canlı yemle beslenen grupta sağlanırken, en düşük yaşama oranı ise % 10,84 olarak 1300 juvenil/m2 stok yoğunluğunda alabalık yemi ile beslenen grupta elde edilmiştir. Denememe sonunda en yüksek vücut ağırlığı, 650 juvenil/m2 stok yoğunluğunda alabalık yemi ile beslenen grupta bulunmuştur. Çalışmamız sonucunda ayrıca, yavru kerevit beslenmesinde her iki yem ile beslenen yavrularda hayatta kalma oranları üzerinde stok yoğunluğunun önemli bir etkiye sahip olduğu görülmüştür

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Cite This Article

EROL, K. G., ÇINAR, Ş., DİDİNEN, B. I., ÖZKÖK, R., CİLBİZ, N., KÜÇÜKKARA, R., TÜMGELİR, L., CEYLAN, M., MEKE, T., KOCA, S. B., DİLER, Ö. (2017). Effect of Different Feed and Stocking Density on Survival and Growth Performance of Astacus leptodactylus (Esch., 1823) Juveniles. Journal of Limnology and Freshwater Fisheries Research, Cilt: 3 - Sayı: 3, 159–165. https://ajindex.com/articles/193625

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