rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Biện pháp nâng cao năng suất nuôi sinh khối tảo Chaetoceros calcitrans (Tankano, 1968)
  title info:
    sub title: Luận văn tốt nghiệp Cao học ngành: Nuôi trồng Thủy sản
  title info: title
  name:
    name part: Huỳnh, Thị Ngọc Hiền
    role:
      role term: creator
  type of resource: text
  origin info:
    place:
      place term: xx
    place:
      place term: Cần Thơ
    publisher: Trường Đại học Cần Thơ
    date issued: 2020
    date issued: 9999
    issuance: monographic
  language:
    language term: und
  physical description:
    form: print
  abstract: Nghiên cứu được thực hiện nhằm xác định một số biện pháp tác động kỹthuật để nâng cao năng suất nuôi sinh khối tảo Chaetoceros calcitrans. Nghiên cứu gồm 3 thí nghiệm, mỗi thí nghiệm có 4 nghiệm thức, mỗi nghiệm thức lặp lại 3 lần trong điều kiện phòng thí nghiệm với nhiệt độ từ 26-28°C và ánh sáng tổng hợp lam + đỏ theo tỉ lệ 1:1 (3000 lux). Tảo C. calcitrans được nuôi trong bình (8Lít), độ mặn 25‰, sử dụng môi trường dinh dưỡng Walne. Kết quả cho thấy ở thí nghiệm 1 khi bố trí với các mật độ tảo khác nhau thì nghiệm thức 2 × 106 tb/mL cho mật độ tảo cao nhất vào ngày 7 (19,5 ± 1,3 × 106 tb/mL), khối lượng khô trung bình là 1,58 g/L, hàm lượng protein và lipid lần lượt là 15,37% và 6,51 %. Thí nghiệm 2 được bổ sung CO₂ với các tỉ lệ là: 0%, 1%, 3% và 5% (8lít). Kết quảcho thấy, mật độ tảo đạt cao nhất với tỉ lệ 1% ở ngày nuôi thứ 6 (23,1 ± 0,7 × 106 tb/mL), trọng lượng khô trung bình là 2,19 g/L, hàm lượng protein và lipid là 18,4% và 4,1 % khối lượng khô. Thí nghiệm 3 được thực hiện với 4 tỉ lệ thu hoạch lần lượt là 0%, 10%, 20%, 30% theo thể tích. Kết quả cho thấy ở nghiệm thức thu hoạch theo tỉ lệ 30% cho tổng sinh khối tảo cao nhất (259, 99g). Do đó, mật độ tảo 2 × 106 tb/mL, tỉ lệ bổ sung 1% CO₂ và tỉ lệ thu hoạch 30% có thể được lựa chọn để tăng sinh khối trong nuôi tảo C. calcitrans và chủ động được nguồn tảo tươi cho các trại giống thủy sản.
  note: Huỳnh Thị Ngọc Hiền ; Nguyễn Văn Hòa (hướng dẫn khoa học)
  subject:
    topic: Tảo học,Algology
  classification: 579.8
  classification: H305
  record info:
    record creation date: 210402
    record identifier: CTU_237788