An Optimized Zebrafish Nursery Feeding Regimen Improves Growth Rates and Labor Costs
Autor: | Emily M Teets, Jami Shaffer, Bradley W. Blaser, Shelby Cabrera, Toi A Collins |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
endocrine system
animal structures biology Reproductive success animal diseases fungi Danio Rotifera Zoology Original Articles biology.organism_classification Animal Feed Diet stomatognathic system Larva Zebrafish larvae Animals Animal Science and Zoology Zebrafish Feeding Regimen Developmental Biology |
Zdroj: | Zebrafish |
Popis: | Setting nutritional standards for larval zebrafish (Danio rerio) that maximize growth, survival, and reproductive success is challenging. We evaluated the effects of different feeding regimens on larval zebrafish by comparing Gemma Micro 75 pelleted diet and live-type L rotifers (Brachionus plicatilis) in 3 feeding regimens starting at 9 days postfertilization (dpf): bolus feeding of live diet (BL), continuous feeding of live diet (CL), and pelleted diet (PD). Animals in the PD and CL groups were longer than the BL group at 4–5 weeks postfertilization. The PD group was also greater in body depth than both live diet groups. There was no significant difference in weight between the groups. There were also no significant differences in fecundity or sex ratios indicating that all feeding methods successfully promote growth of a useful breeding stock of fish. In addition, we quantified the equipment, consumable, and labor costs associated with these methods, and found that the PD regimen was superior to both live diet regimens. These data suggest that providing a high nutrient-density pelleted diet to larval and juvenile zebrafish is an effective means to increase early growth and to decrease cost and labor associated with nursery care. |
Databáze: | OpenAIRE |
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