Genetics of Feed Efficiency in Pacific Whiteleg Shrimp
Author Information
Author(s): Dai Ping, Zhu Xiangyan, Luan Sheng, Sui Juan, Meng Xianhong, Cao Jiawang, Tan Jian, Kong Jie
Primary Institution: State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Science
Hypothesis
Does the feed efficiency of Pacific whiteleg shrimp vary between plant-based and fishmeal-based diets?
Conclusion
The study found that a plant-based diet resulted in lower feed efficiency and growth compared to a fishmeal-based diet, but some shrimp families showed comparable efficiency on both diets.
Supporting Evidence
- Shrimp on a plant-based diet had a higher residual feed intake (RFI) of 0.0049 g/d compared to -0.0045 g/d on a fishmeal diet.
- Average daily weight gain (ADG) was lower on the plant-based diet (0.043 g/d) than on the fishmeal diet (0.110 g/d).
- Heritability estimates for RFI were significantly higher on the plant-based diet (0.743) than on the fishmeal diet (0.440).
- Genetic correlations between diets for RFI and daily feed intake (DFI) were high, indicating genotype × diet interactions.
Takeaway
This study looked at how well shrimp grow on different diets. It found that shrimp do better on fishmeal than on plant-based food, but some shrimp can still do well on the plant food.
Methodology
The study compared a plant-based diet with a fishmeal-based diet in a controlled feeding trial with shrimp from different families.
Limitations
The study's heritability estimates may be overestimated due to unaccounted common environmental effects.
Participant Demographics
Pacific whiteleg shrimp (Penaeus vannamei) from three commercial strains.
Statistical Information
P-Value
p < 0.001
Confidence Interval
0.743 ± 0.157 (RFI for plant-based diet), 0.440 ± 0.125 (RFI for fishmeal-based diet)
Statistical Significance
p < 0.001
Digital Object Identifier (DOI)
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