A new approach to feed frequency studies and protein intake regulation in juvenile pirarucu
An. acad. bras. ciênc
;
89(2): 1243-1250, Apr.-June 2017. tab, graf
Article
in English
| LILACS
| ID: biblio-886683
ABSTRACT
ABSTRACT This study aimed to investigate pirarucu's (Arapaima gigas) ability to trigger a self-feeding system to regulate protein intake between two standard diets that contained 39% and 49% of crude protein. The same system allowed the evaluation of daily feeding and locomotor activity rhythms. Eighteen fish (654.44±26.85g) were distributed into six 250 L tanks (3 fish/tank). Fish had free access to both diets (39% vs. 49% protein) by feeders (2 per tank), adapted to be activated by fish themselves. This system was connected to a computer system. After an adaptation period, fish learned to activate feeders and the mean food intake recorded was 2.14% of their body weight on a daily basis. Fish showed feeding (72.48%) and locomotor (72.49%) activity predominantly during the daytime, and daily variations of choice between diets, but fixed a protein intake feeding target at 44.53%. These results should be considered when discussing feeding behavior, feeding schedules and diet intake regulations.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Appetite Regulation
/
Dietary Proteins
/
Feeding Behavior
/
Fishes
/
Animal Feed
Type of study:
Prognostic study
Limits:
Animals
Language:
English
Journal:
An. acad. bras. ciênc
Journal subject:
Science
Year:
2017
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
UFBA+BR
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