Nghiên cứu này thực hiện nhằm đánh giá khả năng thay thế protein bột cá bằng bột nhộng ruồi lính đen cũng như thức ăn tim bò tươi và thức ăn viên thương mại lên tăng trưởng, tỷ lệ sống và hiệu quả sử dụng thức ăn của cá dĩa (Symphysodon sp.). | Ảnh hưởng của việc bổ sung nhộng ruồi lính đen (Hermetia illucens) vào thức ăn lên tăng trưởng của cá dĩa (Symphysodon sp.) Tr÷íng ¤i håc Næng L¥m TP. Hç Ch½ Minh 33 Effects of replacement of black soldier fly (Hermetia illucens ) larvae meal in the diets on growth performance of discus fish (Symphysodon sp.) Tu P. C. Nguyen1∗ , Ha N. Nguyen2 , Linh T. T. Nguyen1 , & Tri N. Nguyen1 1 Faculty of Fisheries, Nong Lam University, Ho Chi Minh City, Vietnam 2 Research Institute for Biotechnology and Environment, Nong Lam University, Ho Chi Minh City, Vietnam ARTICLE INFO ABSTRACT Research Paper This study was conducted to evaluate the replacement of fishmeal by black soldier fly larvae (Hermetia illucens ) (BSF) meal, frozen beefheart, Received: March 23, 2019 and commercial pellet on growth performance, survival rate, and feed Revised: September 12, 2019 utilization of discus fish (Symphysodon sp.). Discus juveniles were graded Accepted: September 24, 2019 into small, medium and large size groups as block in a completely randomized block design. Five trial diets included frozen beefheart (T1), Keywords commercial feed for discus fish (T2) and three diets containing graded levels of BSF as replacements for protein from fishmeal of 0% (T3), 25% Black soldier fly larvae (T4), and 50% (T5). The results showed that TAN and nitrite levels in the beefheart treatment were higher than those in the other ones. Discus fish Moreover, discus fish in treatment 1 had a higher growth rate and a lower Formulated feed feed conversion ratio than those in the other treatments. On the other Frozen beefheart hand, no statistically significant differences among the pellet treatments Growth rate were observed for growth rates of discus's weight, length and height and feed conversion ratio (P > ). Moreover, the results showed that ∗ Corresponding author discus fish in the two BSF treatments did not suffer from diseases and .
