Growth Performance and Survival Rate of Pontastacus leptodactylus Juveniles Fed with Fresh Black Soldier Fly Hermetia illucens and Mealworm Tenebrio molitor Larvae

Authors : Seval Bahadır Koca, Habil Uğur Koca, Hasan Batuhan Emre Özdoğan, Nalan Özgür Yigit

Pages : 343-350

Doi:10.22392/actaquatr.1452851

View : 147 | Download : 211

Publication Date : 2024-12-01

Article Type : Research Paper

Abstract :In this study, the survival rate and growth performance of crayfish Pontastacus leptodactylus juveniles were evaluated when fed with five different diets. These diets were CF: commercial feed, Hİ: Fresh Hermetia illucens, CF+Hİ; 50% commercial feed + 50% fresh Hermetia illucens, TM: Fresh Tenebrio molitor, CF+TM: 50% commercial feed + 50% fresh Tenebrio molitor. The experiments of the present study were carried out for 60 days. The results showed that the survival rate, final body weight (FBW), and weight gain (WG) were negatively correlated with fresh BSF and TM diets. All individuals fed only with BSF and TM diets died on approximately the 30th day of the experiment. The final weight, feed conversion ratio (FCR), molting rate and survival rate of crayfish fed with dietary treatment diets showed significant differences on the 30th day (P < 0.05). The crayfish fed with CF+BSFL and CF+TM diets had similar weight, FCR, molting rate, single cheliped injury with the control group on the 30th day and 60th day. However, the highest survival rate was observed in crayfish fed with CF diet followed by CF+BSFL and CF+TM groups on the 60th day. As a result, TM and BSF diets given fresh alone showed negative effects on growth and survival rates in crayfish larvae. Therefore using just fresh insects in the crayfish juvenile diets is not recommended. By decreasing 50% commercial feeds and using as supplementary feed of TM and BSF larvae can show similar growth as the control group. However, 50% TM supplemented with 50% commercial diets is not recommended due to reduced survival rates. On the other hand, fresh BSF can be given to P. astacus larvae after reducing the commercial feed by 50% without affecting the survival rate and growth.
Keywords : Büyüme, Hermetia illucens, Pontastacus leptodactylus, Tenebrio molitor, Yaşama oranı