The effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (Oncorhynchus mykiss) larvae and juvenile
This study investigated the ontogeny of some digestive enzyme and explored the effects of photoperiod on stomach (pepsin) and intestine enzyme activity (alkaline phosphatase and Namino peptidase) in rainbow trout (Oncorhynchus mykiss) larvae juvenile. About 3600 larval rainbow trout in first feeding (18 days after hatching) with an average initial weight 119±0.009 mg were distributed in plastic tanks in four treatments (300 larvae in each replicate). Four light treatments consisting of 14 to 10 h, 10 to 14 h, 4 to 20 h and 24 to 0 h (light: dark), were compared in triplicates for 6 weeks. Finally, a random sampling from larvae was undertaken on days 1, 3, 5, 8, 10, 15, 20, 25, 30, 39 and 44 days after the onset of first feeding. According to the results, the digestive enzymes activity in fish larvae and juveniles had a similar change trend with age at all photoperiods. In addition, at the end of experiment, the specific activity of pepsin and Namino peptidase were the highest in 24h Light treatment, but there was no significant difference in specific activities of alkaline phosphatase (p>0.05). The results demonstrated that growth and digestive enzymes activity of rainbow trout larvae and juvenile are improved by applying of longer photoperiod in rearing conditions.
Main Authors: | , , , |
---|---|
Format: | article biblioteca |
Language: | Persian |
Published: |
2014
|
Subjects: | Aquaculture, Biology, Photoperiod, Digestive, enzyme, Pepsin, N-amino peptidase, Alkaline phosphatase, Rainbow trout, Oncorhynchus mykiss, larvae, juvenile, hatching, Iran, |
Online Access: | http://hdl.handle.net/1834/36822 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-aquadocs-1834-36822 |
---|---|
record_format |
koha |
spelling |
dig-aquadocs-1834-368222021-07-06T02:23:54Z The effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (Oncorhynchus mykiss) larvae and juvenile Yeganeh, S. Ramzanzadeh, F. Jani Khalili, Kh. Babaei, S.S. Aquaculture Biology Photoperiod Digestive enzyme Pepsin N-amino peptidase Alkaline phosphatase Rainbow trout Oncorhynchus mykiss larvae juvenile hatching Iran This study investigated the ontogeny of some digestive enzyme and explored the effects of photoperiod on stomach (pepsin) and intestine enzyme activity (alkaline phosphatase and Namino peptidase) in rainbow trout (Oncorhynchus mykiss) larvae juvenile. About 3600 larval rainbow trout in first feeding (18 days after hatching) with an average initial weight 119±0.009 mg were distributed in plastic tanks in four treatments (300 larvae in each replicate). Four light treatments consisting of 14 to 10 h, 10 to 14 h, 4 to 20 h and 24 to 0 h (light: dark), were compared in triplicates for 6 weeks. Finally, a random sampling from larvae was undertaken on days 1, 3, 5, 8, 10, 15, 20, 25, 30, 39 and 44 days after the onset of first feeding. According to the results, the digestive enzymes activity in fish larvae and juveniles had a similar change trend with age at all photoperiods. In addition, at the end of experiment, the specific activity of pepsin and Namino peptidase were the highest in 24h Light treatment, but there was no significant difference in specific activities of alkaline phosphatase (p>0.05). The results demonstrated that growth and digestive enzymes activity of rainbow trout larvae and juvenile are improved by applying of longer photoperiod in rearing conditions. 2021-06-24T18:01:12Z 2021-06-24T18:01:12Z 2014 article TRUE 1026-1354 http://hdl.handle.net/1834/36822 fa http://isfj.areo.ir/?lang=en application/pdf application/pdf 103-115 http://aquaticcommons.org/id/eprint/22009 18721 2018-01-21 12:27:32 22009 Iranian Fisheries Science Research Institute |
institution |
UNESCO |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-aquadocs |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Repositorio AQUADOCS |
language |
Persian |
topic |
Aquaculture Biology Photoperiod Digestive enzyme Pepsin N-amino peptidase Alkaline phosphatase Rainbow trout Oncorhynchus mykiss larvae juvenile hatching Iran Aquaculture Biology Photoperiod Digestive enzyme Pepsin N-amino peptidase Alkaline phosphatase Rainbow trout Oncorhynchus mykiss larvae juvenile hatching Iran |
spellingShingle |
Aquaculture Biology Photoperiod Digestive enzyme Pepsin N-amino peptidase Alkaline phosphatase Rainbow trout Oncorhynchus mykiss larvae juvenile hatching Iran Aquaculture Biology Photoperiod Digestive enzyme Pepsin N-amino peptidase Alkaline phosphatase Rainbow trout Oncorhynchus mykiss larvae juvenile hatching Iran Yeganeh, S. Ramzanzadeh, F. Jani Khalili, Kh. Babaei, S.S. The effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (Oncorhynchus mykiss) larvae and juvenile |
description |
This study investigated the ontogeny of some digestive enzyme and explored the effects of photoperiod on stomach (pepsin) and intestine enzyme activity (alkaline phosphatase and Namino peptidase) in rainbow trout (Oncorhynchus mykiss) larvae juvenile. About 3600 larval rainbow trout in first feeding (18 days after hatching) with an average initial weight 119±0.009 mg were distributed in plastic tanks in four treatments (300 larvae in each replicate). Four light treatments consisting of 14 to 10 h, 10 to 14 h, 4 to 20 h and 24 to 0 h (light: dark), were compared in triplicates for 6 weeks. Finally, a random sampling from larvae was undertaken on days 1, 3, 5, 8, 10, 15, 20, 25, 30, 39 and 44 days after the onset of first feeding. According to the results, the digestive enzymes activity in fish larvae and juveniles had a similar change trend with age at all photoperiods. In addition, at the end of experiment, the specific activity of pepsin and Namino peptidase were the highest in 24h Light treatment, but there was no significant difference in specific activities of alkaline phosphatase (p>0.05). The results demonstrated that growth and digestive enzymes activity of rainbow trout larvae and juvenile are improved by applying of longer photoperiod in rearing conditions. |
format |
article |
topic_facet |
Aquaculture Biology Photoperiod Digestive enzyme Pepsin N-amino peptidase Alkaline phosphatase Rainbow trout Oncorhynchus mykiss larvae juvenile hatching Iran |
author |
Yeganeh, S. Ramzanzadeh, F. Jani Khalili, Kh. Babaei, S.S. |
author_facet |
Yeganeh, S. Ramzanzadeh, F. Jani Khalili, Kh. Babaei, S.S. |
author_sort |
Yeganeh, S. |
title |
The effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (Oncorhynchus mykiss) larvae and juvenile |
title_short |
The effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (Oncorhynchus mykiss) larvae and juvenile |
title_full |
The effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (Oncorhynchus mykiss) larvae and juvenile |
title_fullStr |
The effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (Oncorhynchus mykiss) larvae and juvenile |
title_full_unstemmed |
The effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (Oncorhynchus mykiss) larvae and juvenile |
title_sort |
effect of photoperiod on stomach and intestinal digestive enzymes in rainbow trout (oncorhynchus mykiss) larvae and juvenile |
publishDate |
2014 |
url |
http://hdl.handle.net/1834/36822 |
work_keys_str_mv |
AT yeganehs theeffectofphotoperiodonstomachandintestinaldigestiveenzymesinrainbowtroutoncorhynchusmykisslarvaeandjuvenile AT ramzanzadehf theeffectofphotoperiodonstomachandintestinaldigestiveenzymesinrainbowtroutoncorhynchusmykisslarvaeandjuvenile AT janikhalilikh theeffectofphotoperiodonstomachandintestinaldigestiveenzymesinrainbowtroutoncorhynchusmykisslarvaeandjuvenile AT babaeiss theeffectofphotoperiodonstomachandintestinaldigestiveenzymesinrainbowtroutoncorhynchusmykisslarvaeandjuvenile AT yeganehs effectofphotoperiodonstomachandintestinaldigestiveenzymesinrainbowtroutoncorhynchusmykisslarvaeandjuvenile AT ramzanzadehf effectofphotoperiodonstomachandintestinaldigestiveenzymesinrainbowtroutoncorhynchusmykisslarvaeandjuvenile AT janikhalilikh effectofphotoperiodonstomachandintestinaldigestiveenzymesinrainbowtroutoncorhynchusmykisslarvaeandjuvenile AT babaeiss effectofphotoperiodonstomachandintestinaldigestiveenzymesinrainbowtroutoncorhynchusmykisslarvaeandjuvenile |
_version_ |
1756079542538076160 |