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Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets

A study was conducted to determine the effects of different dietary treatments on the growth, survival and digestive enzyme activities of Mystus nemurus larvae. Newly hatched larvae were reared for 14 days in twelve 15 L glass aquaria (for growth and survival) and eight 300 L fiberglass tanks (for e...

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Main Authors: Kamarudin, Mohd Salleh, Otoi, Samsiah, Saad, Che Roos
Format: Article
Language:English
Published: Academic Journals 2011
Online Access:http://psasir.upm.edu.my/id/eprint/23625/1/23625.pdf
http://psasir.upm.edu.my/id/eprint/23625/
http://www.academicjournals.org/journal/AJB/article-abstract/383718A33903
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spelling my.upm.eprints.236252017-11-15T08:30:54Z http://psasir.upm.edu.my/id/eprint/23625/ Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets Kamarudin, Mohd Salleh Otoi, Samsiah Saad, Che Roos A study was conducted to determine the effects of different dietary treatments on the growth, survival and digestive enzyme activities of Mystus nemurus larvae. Newly hatched larvae were reared for 14 days in twelve 15 L glass aquaria (for growth and survival) and eight 300 L fiberglass tanks (for enzyme samples) at a stocking density of 15 larvae L-1. Beginning at 2 days, the larvae were randomly assigned to Artemia nauplii, a microbound diet and a 50:50 combination of live food-microbound diet, while another group was unfed. All treatments were triplicated (growth and survival) or duplicated (enzyme development). The results showed that, M. nemurus larvae which fed on Artemia nauplii gave the highest survival rate (83.7%), followed by those fed on a combination diet (56.0%) and a microbound diet (26.5%). All unfed larvae did not survive beyond Day 9. Artemia had also given the best growth (20.4 ± 1.4 mm TL and 37.2 ± 6.0 mg wet weight) for the catfish larvae. This was followed by the combination diet (18.3 ± 0.6 mm TL and 32.6 ± 3.4 mg wet weight) and the microbound diet (11.0 ± 0.1 mm TL and 11.9 ± 0.9 mg wet weight), respectively. Pepsin began to significantly appear in M. nemurus larvae at 4 days old for all treatments, while chymotrypsin, trypsin and amylase were present even in the newly hatched larvae. In general, highest enzyme activities were observed among larvae which fed on a combination diet, followed by those fed on live and artificial diets, respectively. This suggested the important role of exogenous enzymes from live food in the larval digestion particularly at the early feeding stages. Academic Journals 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/23625/1/23625.pdf Kamarudin, Mohd Salleh and Otoi, Samsiah and Saad, Che Roos (2011) Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets. African Journal of Biotechnology, 10 (21). art. no. 383718A33903. pp. 4484-4493. ISSN 1684–5315 http://www.academicjournals.org/journal/AJB/article-abstract/383718A33903 10.5897/AJB09.1895
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description A study was conducted to determine the effects of different dietary treatments on the growth, survival and digestive enzyme activities of Mystus nemurus larvae. Newly hatched larvae were reared for 14 days in twelve 15 L glass aquaria (for growth and survival) and eight 300 L fiberglass tanks (for enzyme samples) at a stocking density of 15 larvae L-1. Beginning at 2 days, the larvae were randomly assigned to Artemia nauplii, a microbound diet and a 50:50 combination of live food-microbound diet, while another group was unfed. All treatments were triplicated (growth and survival) or duplicated (enzyme development). The results showed that, M. nemurus larvae which fed on Artemia nauplii gave the highest survival rate (83.7%), followed by those fed on a combination diet (56.0%) and a microbound diet (26.5%). All unfed larvae did not survive beyond Day 9. Artemia had also given the best growth (20.4 ± 1.4 mm TL and 37.2 ± 6.0 mg wet weight) for the catfish larvae. This was followed by the combination diet (18.3 ± 0.6 mm TL and 32.6 ± 3.4 mg wet weight) and the microbound diet (11.0 ± 0.1 mm TL and 11.9 ± 0.9 mg wet weight), respectively. Pepsin began to significantly appear in M. nemurus larvae at 4 days old for all treatments, while chymotrypsin, trypsin and amylase were present even in the newly hatched larvae. In general, highest enzyme activities were observed among larvae which fed on a combination diet, followed by those fed on live and artificial diets, respectively. This suggested the important role of exogenous enzymes from live food in the larval digestion particularly at the early feeding stages.
format Article
author Kamarudin, Mohd Salleh
Otoi, Samsiah
Saad, Che Roos
spellingShingle Kamarudin, Mohd Salleh
Otoi, Samsiah
Saad, Che Roos
Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets
author_facet Kamarudin, Mohd Salleh
Otoi, Samsiah
Saad, Che Roos
author_sort Kamarudin, Mohd Salleh
title Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets
title_short Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets
title_full Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets
title_fullStr Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets
title_full_unstemmed Changes in growth, survival and digestive enzyme activities of Asian redtail catfish, Mystus nemurus, larvae fed on different diets
title_sort changes in growth, survival and digestive enzyme activities of asian redtail catfish, mystus nemurus, larvae fed on different diets
publisher Academic Journals
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/23625/1/23625.pdf
http://psasir.upm.edu.my/id/eprint/23625/
http://www.academicjournals.org/journal/AJB/article-abstract/383718A33903
_version_ 1643828115990904832
score 13.211869

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