Ecological feed for factory-cultivated Penaeus vannamei
A white shrimp, industrial technology, applied in the direction of animal feed, animal feed, food processing, etc., can solve the problems of lack of natural bait, excessive nitrogen and phosphorus discharge, large pollution of water environment, etc., to improve the survival rate and economic benefits, The effect of reducing ammonia nitrogen emissions and reducing self-pollution
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Embodiment 1
[0033] A kind of industrial culture Penaeus vannamei ecological feed, feed formulated by the formula shown in Table 1 or Table 2, raise the Penaeus vannamei of 3.8g for 6 weeks, and feed the Penaeus vannamei of the experimental group formula (low protein and low phosphorus feed). The weight gain rate of prawns was 212%, the feed efficiency was 45%, and the specific growth rate was 2.28. Compared with the control formula (high protein level), there was no significant difference in weight gain rate, feed efficiency, and specific growth rate, but the ammonia nitrogen emission was reduced. 19%, phosphorus emissions reduced by 15%.
Embodiment 2
[0035] A kind of industrialized farming Penaeus vannamei ecological feed, the feed formulated by the formula shown in table 3, raised the Penaeus vannamei of 4.2g for 6 weeks, and the weight gain rate of Penaeus vannamei of the experimental formula (adding seaweed powder) was 237%, The feed factor was 1.27 and the specific growth rate was 2.29. Compared with the formula of the control group (without adding seaweed powder), the weight gain rate increased by 22%, the feed factor decreased by 35%, and the specific growth rate increased by 29%. Enzyme, superoxide dismutase, phenoloxidase, lysozyme, glutathione peroxidase activities were significantly higher than the control group (P<0.05, P<0.01), malondialdehyde concentration was significantly lower than the control group (P <0.05, P<0.01).
Embodiment 3
[0037] A kind of industrialized farming Penaeus vannamei ecological feed, by the formulation feed shown in table 3, raises the Penaeus vannamei of 3.9 for 6 weeks, and the Penaeus vannamei of the experimental formula (adding gamma-aminobutyric acid) increases in weight by 215%. , feed factor 1.18, specific growth rate 2.47, compared with the control formula (without adding γ-aminobutyric acid), the weight gain rate increased by 42%, the feed factor decreased by 38%, and the specific growth rate increased by 27%.
[0038] Table 1 Feed composition of Penaeus vannamei (by mass fraction)
[0039]
[0040] Table 2 Feed composition of Penaeus vannamei (by mass fraction)
[0041]
[0042] Table 3 Feed composition of Penaeus vannamei (by mass fraction)
[0043]
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