Method for preparing special nutrient liquid preparation for hatching penaeus vannamei
A liquid preparation, white shrimp technology, applied in the application, animal feed, animal feed and other directions, can solve the problem of no report on the preparation method, and achieve the effects of improving the utilization rate, reducing the growth rate and saving costs.
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Embodiment 1
[0017] The bacillus pumilus bacterial strain is cultivated in the order of slant, liquid seed, and liquid fermentation, and the slant and seed medium are conventional nutrient agar medium or broth medium; fermentation medium formula (W / V): bean cake powder 3% , 1.5% starch, 1% corn steep liquor, 0.5% glucose, (NH 4 ) 2 SO 4 0.1%, NH 4 Cl0.1%, KH 2 PO 4 0.05%, NaH 2 PO 4 0.5%, MgSO 4 0.05%, MnSO 4 0.05%, the fermentation culture condition is 28-37 ℃, ventilated culture 36-48h, the number of viable bacteria ≥ 2×10 9 cfu / ml.
[0018] Add mineral elements, vitamins and enzymes to the concentrated solution of Bacillus pumilus, the amount added per 1000ml concentrated solution of Bacillus pumilus: MgCl 2 ·6H 2 O101g, zinc sulfate 27g, copper methionine 19g, cobalt methionine 36g, 500,000 IU / g feed grade vitamin A1.2g, 500,000 IU / g feed grade vitamin D 3 6g, vitamin E17.5g, vitamin B 1 6.5g, vitamin B 2 5g, vitamin C30g, pepsin 65g, tryptase 85g.
Embodiment 2
[0020] The broodstock of Penaeus vannamei is cultivated by conventional methods, and the unilateral eye stalk is removed. After the female shrimp matures, the male shrimp with healthy limbs is carefully selected to mate with the female shrimp. The specific method is to transfer mature female shrimps to an aquarium of 0.60m×0.60m×0.60m, and put two female shrimps and two male shrimps in each box. box. Females that did not mate were returned to their original aquariums. After the spawning is over, the female shrimp is removed from the spawning box to avoid loss of eggs. The egg-laying box is divided into a control group and an experimental group. The egg-laying box of the control group is a conventional egg-laying box, and the egg-laying box of the experimental group has added the special nutrient liquid preparation for hatching of Penaeus vannamei in Example 1, and the addition amount is 100% for hatching. Protective liquid preparation: the volume ratio of water body is 1:100...
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