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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| Format: | Article |
| Language: | English |
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Wiley-Blackwell
2003
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| Subjects: | |
| Online Access: | http://eprints.uanl.mx/1268/1/L.vannamei_dig_enzyme.pdf |
| _version_ | 1824367861535080448 |
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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. |
| format | Article |
| id | eprints-1268 |
| institution | UANL |
| language | English |
| publishDate | 2003 |
| publisher | Wiley-Blackwell |
| record_format | eprints |
| 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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