3,5,3'-Triiodothyronine' in karabalık (Clarias gariepinus Burchell, 1822)' ta büyüme performansı üzerine etkisi

Bu araştırmada, ortalama başlangıç canlı ağırlıkları 35,59±1,01 g olan karabalıklara {Clarias gariepinus, Burchell, 1822) laboratuar şartlarında 1 ve 10 mg kg-1 diet olacak şekilde 3,5,3'-triiodothyronine hormonu 60 gün süre ile uygulanmıştır. Bu şekilde, 3,5,3'-triiodothyronine hormonunun karabalıklarda büyüme performansı üzerine etkisi incelenmiştir. Deneme sonunda T3 hormon gruplarına ait canlı ağırlık kazancı ve yem değerlendirme oranları hesaplanmış, buna göre canlı ağırlık kazancı ve yem değerlendirme oranının kontrol grubuna göre 1 mg kg1 T3 grubunda önemli düzeyde arttığı fakat 1 mg kg-1 T3den sonra büyümenin olumsuz etkilendiği tespit edilmiştir.

Anahtar Kelimeler:

yem çevirimi, yemler, balık yetiştiriciliği, balık beslenmesi, triiyodotironin, Clarias gariepinus, büyüme, canlı ağırlık artışı, büyüme performansı

The effect of 3,5,3'-treiodothyronine on the growth performance in the african catfish (Clarias gariepinus, Burchell, 1822

In this study, African catfish (Clarias gariepinus, Burchell,1822), having an average initial weight of 35.59±1.01 g were fed 3,5,3'-triiodothyronine at dietary levels of 1 and 10 mg kg-1 under laboratory conditions for two months. In this way, the effect of 3,5,3'-triiodothyronine on the growth performance of African catfish was investigated. At the end of experiment, live weight gain and food conversion ratio (FCR) significantly increased in fish fed with 1 mg kg-13,5,3'-triiodothyronine in comparison with the control groups (P<0.001). But, growth rate was dramatically decreased after 1 mg kg-13,5,3'-triiodothyronine dosage group.

Keywords:

feed conversion, feeds, fish farming, fish feeding, triiodothyronine, Clarias gariepinus, growth, liveweight gain, growth performance,

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