Larger prawns and improved efficiency in an Australian research trial
Summary
A Black Tiger prawn trial was conducted at James Cook University in Australia.
The trial demonstrated additional weight gain in a dose-dependant manner with improvements in feed conversion and less feed waste.
Polygain also improved the survival rate in shrimp for the final five-week period.
Results published in Applied Science https://doi.org/10.3390/app12168090
Background
The black tiger prawn (Penaeus monodon) is an important premium shrimp variety. According to UN FAO data in 2019 the production was over 775,000 tonnes.
Trial Design
A 10-week tank trial was conducted at James Cook University in Queensland. Measurements were taken each day covering: feed, feed wasted and mortality. Prawn weight was recorded at the start, middle (5 weeks) and end of the trial.
Results
Figure 1: Polygain has a positive effect on growth in juvenile black tiger prawns.
Figure 2: Feed conversion ratio
Figure 3: Feed wastage analysis over the first five weeks
Figure 4: The positive correlation between inclusion rate and survival from Day 35 to Day 70 may indicate a positive effect of Polygain on prawn health.
These results are an excerpt from a published journal article:
Penglase, S.; Ackery, T.; Kitchen, B.; Flavel, M.; Condon, K. The Effects of a Natural Polyphenol Extract from Sugarcane (Saccharum officinarum) on the Growth, Survival, and Feed Conversion Efficiency of Juvenile Black Tiger Shrimp (Penaeus monodon). Appl. Sci. 2022, 12, 8090. https://doi.org/10.3390/app12168090
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