Alabalık Yemlerine Farklı Oranlarda İlave Edilen Siyah Asker Sineği Larvası (Hermetia illucens)‘nın Büyüme Performansı ve Bazı Kan Parametreleri Üzerine Etkileri

Bu çalışmada, Gökkuşağı alabalığı (Oncorhynchus mykiss) yemlerine farklı düzeylerde katılan dondurulmuş siyah asker sineği larvası (Hermetia illucens)’nın büyüme performansı ve bazı kan parametreleri üzerine olan etkileri araştırıldı. Her grupta 20 toplamda 80 adet balık olacak şekilde balıklar tartılıp boyları ölçüldükten sonra 4 gruba ayrıldı. Gruplar; canlı ağırlığın (CA) %1.5‘i bazal diyetle beslenen kontrol grubu, CA’ın %1.5‘i larva ile beslenen larva grubu, CA’ın %1.125‘i bazal diyet + CA’ın %0.375‘i larva ile beslenen L1 grubu ve CA’ın %0.75‘i bazal diyet + CA’ın %0.75‘i larva ile beslenen L2 grubu şeklinde oluşturuldu. Çalışmanın başında ve 21 günlük süre sonunda ağırlık ve boy ölçümleri yapıldı. Çalışma sonunda bütün balıklar kesilerek kan örnekleri alınıp karkas ağırlıkları ve karkas verimleri belirlendi. L1 ve L2 gruplarının kontrol ve larva gruplarına göre yem tüketimi, canlı ağırlık artışı, yemden yararlanma oranı, karkas ağırlığı ve karkas verimi gibi büyüme parametreleri açısından daha iyi olduğu görüldü (P<0.05). Kan örneklerinde yapılan analizlerde LYM (Lenfosit, %), MID (Monosit, %), MCV (Ortalama Eritrosit Hacmi), MCH (Hücre hemoglobin ortalaması), RDW-SD (Kırmızı kan hücresi dağılım genişliği standart sapma), RDW-CV (Kırmızı kan hücresi dağılım genişliği-varyasyon katsayısı) ve PLT (Trombosit) değerlerinde gruplar arasında istatistiksel farklılık olduğu bulundu (P<0.05). Sonuç olarak, alabalıkları bazal diyete ilave olarak dondurulmuş siyah asker sineği larvası ile beslemenin büyüme performansında anlamlı düzeyde iyileştirmeler yaptığı görüldü. Ayrıca, balıkların kan yapımı hücreleri ile ilgili çok belirgin iyileştirmeler yapmamasına rağmen savunma sistemini destekleyici yönde etkiler yaptığı görüldü. Bu çalışma ile alabalıkların beslenmesinde larvaların tek başına kullanımından ziyade, bazal diyetle belli oranlarda karıştırılarak beslemenin daha faydalı olacağı söylenebilir.

Anahtar Kelimeler:

Büyüme performansı, Gökkuşağı alabalığı, siyah asker sineği larvası

The Effects of Black Soldier Fly Larva (Hermetia illucens) Added to Trout Feed in Different Proportions on Growth Performance and Some Blood Parameters

In this study, the effects on growth performance and some blood parameters of frozen black soldier fly larva (Hermetia illucens) supplemented with different levels in rainbow trout (Oncorhynchus mykiss) diets were investigated. A total of 80 fish were divided into 4 groups after weighing and measuring their lengths, with 20 in each group. The groups were formed as follows: 1.5% of live wei ght (LW) basal diet fed control group, 1.5% of LW larva fed larvae group, 1.125% of LW basal diet + 0.375% of LW L1 group fed larvae and 0.75% of LW basal diet + 0.75% of LW larval fed L2 group. Weight and length measurements were made at the beginning of the study and at the end of the 21-day period. At the end of the study, all fish were slaughtered and blood samples were taken and carcass weights and carcass yields were determined. It was observed that L1 and L2 groups were better than control and larval groups in terms of growth parameters such as feed consumption, live weight gain, feed conversion ratio, carcass weight and carcass yield (P<0.05). Statistical differences were found between the groups in the analysis of blood samples in LYM(%), MID(%), LYM, MCV, MCH, RDW-SD, RDW-CV and PLT values. As a result, it was observed that feeding the trout with frozen black soldier fly larvae in addition to the basal diet significantly improved the growth performance. In addition, although it did not make significant improvements in the blood-forming cells of fish, it made impacts to support the defense system. With this study, it can be said that it would be more beneficial to feed the trout by mixing them with the basal diet in certain proportions rather than using the larvae alone.

Keywords:

Black soldier fly larva, growth performance, rainbow trout,

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