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Integration of photoperiod and time-restricted feeding on the circadian gene rhythms in juvenile salmon
How day length and timed feeding affect daily gene rhythms in young salmon
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Abstract
The circadian clock in juvenile Chinook salmon is most effective when light cycles are paired with regular daytime feeding.
- Circadian clock gene expression in Chinook salmon varies with environmental conditions.
- Regular feeding during daylight hours enhances the synchronization of the circadian clock.
- Constant light exposure disrupts normal gene expression rhythms, affecting glucose regulation.
- Despite growth increases, constant light leads to imbalances in appetite-regulating hormones and metabolic processes.
- The findings suggest potential optimizations for photoperiod and feeding schedules in Chinook aquaculture.
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Key numbers
Higher body mass in constant light conditions
Increased Growth
Juvenile Chinook salmon showed increased growth under constant light conditions.
Higher glucose levels in constant light
Glucose Levels
Juvenile salmon raised in constant light exhibited significantly higher glucose levels.