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: Nghiên cứu kỹ thuật ương tôm càng xanh (macrobra chium rosenbergII) từ hậu ấu trùng lên giống
  title info: title
  name:
    name part: Phạm, Thị Thu Hồng
    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: 2003
    date issued: 9999
    issuance: monographic
  language:
    language term: und
  physical description:
    form: print
  abstract: Nghiên cứu này nhằm khảo sát hiện trạng của mô hình ương tôm càng xanh từ poslarvae lên giống ở một số tỉnh Đồng Bằng Sông Cửu Long, đồng thời nghiên cứu một số yếu tố kỹ thuật về mức độ bón phân và khẩu phần thức ăn công nghiệp tương ứng với các mức độ khác nhau. Kết quả điều tra cho thấy hình thức ương tôm phổ biến là ương trong bể lót nhựa, ao đất và trên bể ximăng. Tỉ lệ sống của tôm rất khác nhau, từ 20 - 80%, tuỳ thuộc vào mật độ thả, kích thước tôm bột, thời gian ương, chế độ chăm sóc...Gía thành con giống ở hình thức trong bể (230 - 250đ/con) cao hơn so với ương trong ao (200 - 220đ/con). Chi phí con giống cao( chiếm >50% chi phí sản xuất), chất lượng không ổn định cùng với trình độ kỹ thuật không cao của người nuôi là những trở ngại chính của mô hình ương tôm giống.
  note: Phạm Thị Thu Hồng ; Nguyễn Anh Tuấn
  subject:
    topic: Aquaculture,Shrimp culture
  classification: 639.58
  classification: H455
  record info:
    record creation date: 210402
    record identifier: CTU_85467