Evaluation of spray-dried microalgae in diets for juvenile Manila clam Tapes philippinarum Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/5m60qw25w

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Effects of spray-dried algae, Schizochytrium sp. and Haematococcus pluvialis, on growth and survival of Manila clam, Tapes philippinarum, spat were determined. Results of the present study showed that these two different spray-dried diets supported clam growth when added as supplements to rations of a mixed diet of the live algae Isochrysis galbana and Chaetoceros calcitrans. Increase in clam wet weight with 1/4 ration of live algae and a supplement of Haematococcus pluvialis or Schizochytrium sp. were similar to those of clams fed on a full live algal ration alone. This result shows that 75% substitution of live algae is possible with spray-dried algae without significantly reducing the live (wet) growth of the clams. Furthermore, effects of three different clays, kaolin, calcium montmorillonite and calcium bentonite, were determined. No significant difference in clam growth rate (% wet and organic weight increase) among treatments with additions of bentonite, kaolin and montmorillonite was found. Effect of different concentrations of calcium bentonite and Haematococcus pluvialis were tested on the growth rate of the clams. Results indicated that different concentrations of Haematococcus pluvialis and calcium bentonite did not improve the growth of the animals. Seventy five percent substitution of live algae with spray-dried algae can decrease the production cost by up to 50%. Therefore, use of spray-dried diets will greatly decrease the costs of juvenile clam nurseries and lead to more consistent and economic production.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome, 256 Grayscale, 24-bit Color) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-08-29T16:32:51Z (GMT) No. of bitstreams: 1 OnalEbru2001.pdf: 1308039 bytes, checksum: 38ffd47fc93712f6f4533d8a203cd546 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2012-08-29T16:29:59Z (GMT) No. of bitstreams: 1 OnalEbru2001.pdf: 1308039 bytes, checksum: 38ffd47fc93712f6f4533d8a203cd546 (MD5)
  • description.provenance : Made available in DSpace on 2012-08-29T16:32:51Z (GMT). No. of bitstreams: 1 OnalEbru2001.pdf: 1308039 bytes, checksum: 38ffd47fc93712f6f4533d8a203cd546 (MD5) Previous issue date: 2001-03-14
  • description.provenance : Submitted by Sergio Trujillo (jstscanner@gmail.com) on 2012-08-28T23:30:26Z No. of bitstreams: 1 OnalEbru2001.pdf: 1308039 bytes, checksum: 38ffd47fc93712f6f4533d8a203cd546 (MD5)

Relationships

In Administrative Set:
Last modified: 08/20/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items