The effect of protein and lipid level on the specific dynamic action and post-prandial nitrogen excretion in subadult of white shrimp Litopenaeus vannamei
The study aimed to evaluate the effect of 4 levels of dietary protein (20, 30, 40 and 50%) and li pids (2, 4, 8 and 16%) on the magnitude and duration of specific dynamic action (SDA) and postprandial nitrogen excret ion in the subadult white shrimp Litopenaeus vannamei using computer-controlled met...
| Authors: | , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2017 |
| Country: | México |
| Institution: | Universidad Michoacana de San Nicolás de Hidalgo |
| Repository: | Redalyc-UMSNH |
| OAI Identifier: | oai:redalyc.org:47950143011 |
| Online Access: | https://www.redalyc.org/articulo.oa?id=47950143011 |
| Access Level: | Open access |
| Keyword: | Ciencias de la Tierra SDA lipid Oxygen shrimp ammonia |
| Summary: | The study aimed to evaluate the effect of 4 levels of dietary protein (20, 30, 40 and 50%) and li pids (2, 4, 8 and 16%) on the magnitude and duration of specific dynamic action (SDA) and postprandial nitrogen excret ion in the subadult white shrimp Litopenaeus vannamei using computer-controlled metabolic chambers (continuous-flow respirometer). We determined the oxygen consumption rate at 1 h intervals until the postprandial oxygen consumption ra te returned to the pre-feeding level. Shrimp fed all the diets had significantly higher respiration rates after feeding due to the SDA. Oxygen consumption, the SDA coefficient and the SDA magnitude increased notably with increasing dietary pro tein content. Shrimp fed the 20% protein diet had the lowest levels of pre- and post-feeding respiration and the smallest SDA. A significant change in the SDA coefficient relative to each lipid level was not demonstrable. Additionally, nitro genous excretion increased with an increase of dietary protein but not with an increase of lipid level. By estimating the SDA o f subadults, the response to standard metabolic rate (SMR) was lower than that reported for juveniles and postlarva white shri mp. |
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