[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit ::
:: Volume 12, Issue 2 (4-2013) ::
IJFS 2013, 12 Back to browse issues page
Changes of digestive enzymes activity in common carp (Cyprinus carpio) during larval ontogeny
A. Farhoudi , A. M. Abedian Kenari * , R. M. Nazari , C. H. Makhdoomi
, aabedian@yahoo.co.uk
Abstract:   (6051 Views)
This study was aimed to gain knowledge on the ontogeny of digestive enzymes in common carp larvae at the governmental Warm water Fish Aquaculture Center of Shahid Rajaee in Sari, Mazandaran, Iran. The ontogenetic development of pancreatic (trypsin, chymotrypsin, lipase and α-amylase) and intestinal (alkaline phosphatase and aminopeptidase-N) enzymes were assessed in common carp larvae from first feeding (3 days post hatching) to 33 days post hatching (dph). The larvae started to feed on rotifers at day 3 to day 7. Feeding on a commercial diet was started from day-8 onwards. Specific trypsin and chymotrypsin activities feed with rotifer were 0.011 U/mg protein and 0.003 U/mg protein at day 7, respectively then the specific activities feed with dry food reached a maximum level at 33 dph (0.028 U/mg protein and 0.028 U/mg protein, respectively) (P<0.05) compared to live prey. The elevated alkaline proteases activity can be related to adaptation of larvae to digest protein content in the food. Specific lipase activity was 0.0006 U/mg protein at 7 dph then the activity feed with dry food reached a maximum level at 15 dph (0.0011 U/mg protein) (P<0.05) compared to live prey. Specific α-amylase activity feed with rotifer was 85.86 U/mg protein on the 7 dph consequently, its specific activity reached a maximum level at 15 dph (128.77 U/mg protein) (P<0.05). Specific alkaline phosphatase and aminopeptidase N activities feed with rotifer were 6 U/mg protein and 0.0106 U/mg protein at day 7, respectively then the specific activities feed with dry food reached a maximum level at 33 dph (28.66 U/mg protein and 0.58 U/mg protein, respectively) (P<0.05) compared to live prey.
Keywords: Common carp, Pancreatic enzymes, Larval growth, Digestive enzymes, Ontogeny
Full-Text [PDF 304 kb]   (3324 Downloads)    
Type of Study: Orginal research papers | Subject: aquaculture
Received: 2013/05/13 | Accepted: 2013/06/2 | Published: 2013/06/2
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA code


XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Farhoudi A, Abedian Kenari A M, Nazari R M, Makhdoomi C H. Changes of digestive enzymes activity in common carp (Cyprinus carpio) during larval ontogeny. IJFS. 2013; 12 (2) :320-334
URL: http://jifro.ir/article-1-992-en.html


Volume 12, Issue 2 (4-2013) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.05 seconds with 31 queries by YEKTAWEB 3742