Ảnh hưởng của thay thế thức ăn công nghiệp bằng ấu trùng ruồi lính đen (Hermetia illucens) với các tỷ lệ khác nhau lên tỷ lệ sống và tăng trưởng của lươn đồng (Monopterus albus) nuôi trong điều kiện không bùn=Effect of replacing partly commercial feed by black soldier fly (hermetiaillucens) larvae on survival rate and growth performance of swamp eels (monopterus albus) cultured in mud

Ảnh hưởng của thay thế thức ăn công nghiệp bằng ấu trùng ruồi lính đen (Hermetia illucens) với các tỷ lệ khác nhau lên tỷ lệ sống và tăng trưởng của lươn đồng (Monopterus albus) nuôi trong điều kiện không bùn=Effect of replacing partly commercial feed by black soldier fly (hermetiaillucens) larvae on survival rate and growth performance of swamp eels (monopterus albus) cultured in mud - free conditions

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Tác giả: Mộng Huyền Hồng, Kim Yến Huỳnh, Thanh Thủy Nguyễn, Thị Phường Nguyễn, Trọng Nghĩa Phạm

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Nông nghiệp và Phát triển nông thôn, 2024

Mô tả vật lý: tr.61-69

Bộ sưu tập: Báo, Tạp chí

ID: 475925

Thêm vào giỏ

Nghiên cứu nhằm xác định sự ảnh hưởng của thức ăn công nghiệp được bổ sung ấu trùng ruồi lính đen với các tỷ lệ khác nhau lên tỷ lệ sống và tăng trưởng của lươn đồng trong điều kiện nuôi không bùn. Tổng số 900 lươn giống có khối lượng trung bình 24,09 g/con được bố trí hoàn toàn ngẫu nhiên vào 3 nghiệm thức với 3 lần lặp lại. Nghiệm thức 1 (NT1): Lươn được cho ăn 100% thức ăn công nghiệp
nghiệm thức 2 (NT2): 90% thức ăn công nghiệp + 10% ấu trùng ruồi lính đen
nghiệm thức 3 (NT3): 80% thức ăn công nghiệp + 20% ấu trùng ruồi lính đen. Lươn được nuôi trong bể lót bạt, đáy không bùn và có mái che. Thí nghiệm được thực hiện trong 150 ngày. Kết quả cho thấy, không có sự sai khác có ý nghĩa thống kê về tăng chiều dài và tỷ lệ sống của lươn ở các nghiệm thức (p >
0,05). Tuy nhiên, tốc độ tăng trưởng tuyệt đối và tương đối về khối lượng của lươn ở NT3 cao hơn NT1 và NT2 (p <
0,05) và hệ số chuyển hóa thức ăn ở NT3 thấp hơn hai nghiệm thức còn lại (p <
0,05). Kết quả nghiên cứu cho thấy, lươn thương phẩm nuôi trong điều kiện không bùn được cho ăn 80% thức ăn công nghiệp kết hợp với 20% ấu trùng ruồi lính đen đã cải thiện khả năng sinh trưởng về khối lượng và chi phí thức ăn.This study aimed to evaluate the effects of replacing commercial feed with black soldier fly (Hermetia illucens) larvae at different levels on the survival rate and growth of Monopterus albus in mud-free farming conditions. A total of 900 swamp eels with an average weight of 24.09 g/eel were completely randomly allocated into 3 dietary treatments with 3 replicates, namely NT1 (100% commercial feed), NT2 (90% commercial feed + 10% Hermetia illucens larvae) and NT3 (80% commercial feed + 20% Hermetia illucens larvae). Eels were raised in the tank with a 1 x 1 x 0.6 m diameter, mud-free floor and shade cover). The experiment lasted for 150 days. The results showed that length gain and survival rate were not statistically significant among treatments (p>
0.05). However, daily weight gain and specific growth rate in live weight were higher in NT3 than those in NT1 and NT2 and the feed conversion ratio was lower in NT3 than in others (p<
0.05). In conclusion, feeding 80% commercial feed and 20% black soldier fly larvae significantly improved the growth performance of swamp eels kept in mud-free farming conditions.

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