Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight

A study was conducted to evaluate variations of digestive enzyme activities in Litopenaeus vannamei (Boone) reared in commercial ponds under semi-intensive conditions. Shrimp were collected at each body weight increase of 2 g. As the shrimp grew (2^12 g), signi¢cant increases in the activities...

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Autores principales: Gamboa Delgado, Julián, Molina Poveda, César, Cahu, Chantal
Formato: Artículo
Lenguaje:inglés
Publicado: Wiley-Blackwell 2003
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Acceso en línea:http://eprints.uanl.mx/1268/1/L.vannamei_dig_enzyme.pdf
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author Gamboa Delgado, Julián
Molina Poveda, César
Cahu, Chantal
author_facet Gamboa Delgado, Julián
Molina Poveda, César
Cahu, Chantal
author_sort Gamboa Delgado, Julián
collection Repositorio Institucional
description A study was conducted to evaluate variations of digestive enzyme activities in Litopenaeus vannamei (Boone) reared in commercial ponds under semi-intensive conditions. Shrimp were collected at each body weight increase of 2 g. As the shrimp grew (2^12 g), signi¢cant increases in the activities of lipase and chymotrypsinwere observed. The total protease activity decreased from 6 g onwards. Trypsin activity showed a peak at 6 g and amylase activity increased two-fold after 2 g. Additionally, the stomach contents were analysed microscopically for shrimp between 2 and 10 g. Plant matter contributed above 30% of the total stomach content in 6-, 8- and 10-g shrimp. Detritus represented 58% and 62% of the total stomach content in 2- and 4-g shrimp, respectively, decreasing to 33^43% at greater shrimp weights. Arti¢cial feed showed amaximumcontribution of 20% in 6-g shrimp. The present results show changes in the enzyme activity after the shrimp reach 6 g in body weight, evidenced by a decrease in total protease and an increase in lipase and amylase activities. The amylase/protease ratio was 2.6 in 2-g shrimp and increased steadily to 9.6 in 12-g shrimp. These ¢ndings suggest an adaptation of the enzymatic activity to diets with lower protein content as body weight increases, and may be related to the variation of the di¡erent items found in the stomach.
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spelling eprints-12682020-03-06T22:12:07Z http://eprints.uanl.mx/1268/ Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight Gamboa Delgado, Julián Molina Poveda, César Cahu, Chantal SH Acuacultura / Pesca A study was conducted to evaluate variations of digestive enzyme activities in Litopenaeus vannamei (Boone) reared in commercial ponds under semi-intensive conditions. Shrimp were collected at each body weight increase of 2 g. As the shrimp grew (2^12 g), signi¢cant increases in the activities of lipase and chymotrypsinwere observed. The total protease activity decreased from 6 g onwards. Trypsin activity showed a peak at 6 g and amylase activity increased two-fold after 2 g. Additionally, the stomach contents were analysed microscopically for shrimp between 2 and 10 g. Plant matter contributed above 30% of the total stomach content in 6-, 8- and 10-g shrimp. Detritus represented 58% and 62% of the total stomach content in 2- and 4-g shrimp, respectively, decreasing to 33^43% at greater shrimp weights. Arti¢cial feed showed amaximumcontribution of 20% in 6-g shrimp. The present results show changes in the enzyme activity after the shrimp reach 6 g in body weight, evidenced by a decrease in total protease and an increase in lipase and amylase activities. The amylase/protease ratio was 2.6 in 2-g shrimp and increased steadily to 9.6 in 12-g shrimp. These ¢ndings suggest an adaptation of the enzymatic activity to diets with lower protein content as body weight increases, and may be related to the variation of the di¡erent items found in the stomach. Wiley-Blackwell 2003 Article PeerReviewed application/pdf en http://eprints.uanl.mx/1268/1/L.vannamei_dig_enzyme.pdf http://eprints.uanl.mx/1268/1.haspreviewThumbnailVersion/L.vannamei_dig_enzyme.pdf Gamboa Delgado, Julián y Molina Poveda, César y Cahu, Chantal (2003) Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight. Aquaculture research, 34 (15). pp. 1403-1411. ISSN 1365-2109 doi:10.1111/j.1365-2109.2003.00959.x
spellingShingle SH Acuacultura / Pesca
Gamboa Delgado, Julián
Molina Poveda, César
Cahu, Chantal
Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight
thumbnail https://rediab.uanl.mx/themes/sandal5/images/online.png
title Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight
title_full Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight
title_fullStr Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight
title_full_unstemmed Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight
title_short Digestive enzyme activity and food ingesta in juvenile shrimp Litopenaeus vannamei (Boone, 1931) as a function of body weight
title_sort digestive enzyme activity and food ingesta in juvenile shrimp litopenaeus vannamei boone 1931 as a function of body weight
topic SH Acuacultura / Pesca
url http://eprints.uanl.mx/1268/1/L.vannamei_dig_enzyme.pdf
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AT molinapovedacesar digestiveenzymeactivityandfoodingestainjuvenileshrimplitopenaeusvannameiboone1931asafunctionofbodyweight
AT cahuchantal digestiveenzymeactivityandfoodingestainjuvenileshrimplitopenaeusvannameiboone1931asafunctionofbodyweight