SEAFDECINSTITUTIONAL REPOSITORY
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
  • English 
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
  • Login
View Item 
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • AQD
  • View Item
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • AQD
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Studies on the digestive proteases of the milkfish Chanos chanos

Thumbnail
View/Open
Request this document
Date
1982
Author
Benitez, Lita V.
Tiro Jr., Leonardo B.
Page views
24
Share 
 
Metadata
Show full item record

Cited times in Scopus



Abstract
The protease activity of crude extracts from various organs of the digestive tract of two groups of milkfish was determined. One group (Sample A) derived their food from ponds that had predominantly unicellular algae while the other group (Sample B) were reared on ponds dominated by the filamentous green algae Chaetomorpha brachygona . In general, crude extracts from Sample A fish had a higher protease activity than Sample B fish. In both samples, high protease activity was observed in crude extracts from the pyloric caeca, intestines and pancreas. Chymotryptic activity was observed in crude extracts of pancreas, intestines and pyloric caeca of both fish samples. Tryptic activity was, however, observed only in fish grown on unicellular algae. Experimental evidence suggests that a powerful trypsin inhibitor in Chaetomorpha brachygona may account for the absence of tryptic activity in all crude extracts of Sample B fish. The presence of this inhibitor may also explain the widely observed poor growth rate of milkfish reared on this natural food.
Description
SEAFDEC contribution no. 112.
URI
http://hdl.handle.net/10862/1125
Suggested Citation
Benitez, L. V., & Tiro Jr., L. B. (1982). Studies on the digestive proteases of the milkfish Chanos chanos. Marine Biology, 71(3), 309-315.
Subject
Digestive system; Enzymatic activity; Food organisms; Inhibitors; Growth; pH; Temperature effects; Chanos chanos; Chaetomorpha brachygona
Collections
  • AQD [1108]

Related items

Showing items related by title, author, creator and subject.

  • Thumbnail

    Milkfish nutrition: a review 

    Benitez, Lita V. (Philippine Council for Aquatic and Marine Research and Development, 1989)
    This paper reviews recent work on milkfish nutrition. Substantial progress had been made towards understanding the digestive physiology of milkfish. Major enzaymes envolved in the digestions of carbohydrates, protein and ...
  • Thumbnail

    Lactate dehydrogenase isozyme patterns during the development of milkfish, (Chanos chanos (Forskal)) 

    Requintina, Pura D.; Engle, L. M.; Benitez, Lita V. (University of the Philippines at Los Baños, 1981)
    Polyacrylamide disc gel electrophoresis was done to determine the lactate dehydrogenase (LDH) isozyme patterns for fry (5-3 mg), fingerling (6-12 g), pond-size (150-250 g) and adult (6-9 kg) milkfish. The patterns were ...
  • Thumbnail

    Digestibility and effective level of meat and bone meal in formulated diet for milkfish, Chanos chanos Forsskal, grown in fresh and seawater 

    Catacutan, Mae R.; Pagador, Gregoria; Maceren-Pates, Mercedes D. (Masyarakat Akuakultur Indonesia (MAI), 2015)
    The efficient level of MBM for good growth and survival of milkfish, Chanos chanos Forsskal, without histological changes in tissues (liver, intestine, muscle, kidney and brain) was determined in both freshwater (FW) and ...

© SEAFDEC 2021
Contact Us | Send Feedback
 

 

Browse

All of SIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

View Usage Statistics
Related Links
SEAFDEC/TD IRSEAFDEC/AQD IRSEAFDEC/MFRDMD IRSEAFDEC/IFRDMD IR

© SEAFDEC 2021
Contact Us | Send Feedback