NDLI: Feeding activity of the pacu Piaractus mesopotamicus Holmberg (1887) reared in fish cages

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Feeding activity of the pacu Piaractus mesopotamicus Holmberg (1887) reared in fish cages

Content Provider	Semantic Scholar
Author	Ferreira, Fabrício José Silva, Carlos Alberto Da
Copyright Year	2012
Abstract	The pacu is one of the most important Brazilian fish for commerce and aquaculture. Interest in the physiological behavior of this species is based on the context that the pacu is a tropical species, which has a preference for fruit and presents specific nutritional patterns as well as having a large capacity to store fat. Over a period of 24 hours, the feeding behavior was studied of pacu reared in fish cages. Catches were performed every 4 hours; 6 fish were sacrificed and blood samples were collected to determine the lipid and blood glucose plasma concentration. Then the liver and muscle samples were collected and used to evaluate the glycogen reserves, using laboratory methods. For the purposes of statistical analysis, the ShapiroWilk normality test was carried out, followed by the Tukey post-test (p<0.05). The results showed that the liver and muscle glycogen reserves were significantly different during the period of analysis, showing higher values in the transition from morning to afternoon and a subsequent decline from afternoon to nighttime. With regard to blood glucose, elevated levels were observed at the passage from afternoon to nighttime. On the other hand, the lipid profile showed inverse dynamics, presenting with an increase in the period of transition from afternoon to night and a decrease during the morning period. The results show different profiles in the mobilization of energy reserves, varying according to time of day/ night, and resulting from the metabolic peculiarities of the pacu in its interaction with the environment and availability of food.
Starting Page	35
Ending Page	42
Page Count	8
File Format	PDF HTM / HTML
Volume Number	26
Alternate Webpage(s)	http://periodicos.puc-campinas.edu.br/seer/index.php/bioikos/article/download/764/744
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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