Ương giống cua biển (Scylla paramamosain) với các loại thức ăn và mật độ khác nhau

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Tác giả: Quốc Việt Lê, Ngọc Hải Trần

Ngôn ngữ: Vie

Ký hiệu phân loại: 636 Animal husbandry

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ Biển, 2020

Mô tả vật lý: 83-94

Bộ sưu tập: Metadata

ID: 403664

Thêm vào giỏ Liên kết toàn văn

Nghiên cứu xác định loại thức ăn và mật độ ương thích hợp để nâng cao tỷ lệ sống và tăng trưởng trong ương giống cua biển. Nghiên cứu gồm 2 thí nghiệm: (1) ương cua giống với các loại thức ăn khác nhau (thức ăn công nghiệp, Artemia sinh khối và con ruốc sinh khối) và (2) ương cua giống với các mật độ khác nhau (100
200
300 và 400 con/m2). Các nghiệm thức được bố trí hoàn toàn ngẫu nhiên và được lặp lại 3 lần. Cua giống có chiều dài ban đầu là 3,24 mm, chiều rộng 4,54 mm và khối lượng 0,018 g. Kết quả thí nghiệm 1 cho thấy, khi sử dụng thức ăn con ruốc sinh khối cho kết quả tốt nhất về tỷ lệ sống (58,8%) và sinh khối đạt 118 con/m2. Thí nghiệm 2 cho thấy, khi ương cua ở mật độ 100 con/m2 cho kết tốt nhất về tỷ lệ sống (90,7%) và sinh khối đạt 91 con/m2. , Tóm tắt tiếng anh, This study aims to determine the appropriate feed type and stocking density to improve the survival rate and growth performance of mud crab crablet during the nursery stage. The study consisted of 2 experiments as follows: (1) Rearing crablets with different feed types (including commercial feed, artemia biomass and acetes biomass) and (2) rearing crablets at different stocking densities (including 100
200
300 and 400 inds/m2). All treatments were randomly set up in triplicate. The initial sizes of crablet were 3.24 ± 0.54 mm in length, 4.54 ± 0.79 mm in width and 0.018 ± 0.004 g in weight. The result showed that using acetes biomass gave the best results compared to other treatments. The survival rate was 58.8% and biomass was 118 inds/m2. The second experiment showed that rearing crablets at 100 inds/m2 reached the highest survival rate (90.7%) and biomass (91 inds/m2).

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