A kind of Crab Portunus trituberculatus Larvae is cultivated feed
Technical field
The present invention relates to the feed of a kind of swimming crab, specifically, relate to a kind of Crab Portunus trituberculatus Larvae and cultivate feed, belong to field of feed processing.
Background technology
Portunus trituberculatus Miers (
portunus trituberculatus) belong to Crustachia, Decapoda, Portumidae, is the maximum and foremost ocean crab class again of China.The meat flavour of Portunus trituberculatus Miers is delicious, nutritious, since the eighties, has had a sudden rise in social status.The Portunus trituberculatus Miers that China fishes for every year mostly, for foreign exchange earning, only has part seldom to offer domestic market needs, and due to overfishing, the natural resources of Portunus trituberculatus Miers is day by day deficient, and annual catch is difficult to meet the demand of domestic market especially.In order to make up the deficiency of natural resources, meet the needs of domestic market, carry out one after another propagating artificially of Portunus trituberculatus Miers both at home and abroad.
Portunus trituberculatus Miers personality is violent, very bellicose, inhabits marine site bottom, hides by day and comes out at night, and has obvious phototaxis, just has mutual pincers food phenomenon, while especially occurring in shell and serious scarce bait from megalopa stage; Tradition cultivation is thrown something and fed and is frozen mixed feed that trash fish, shrimp, nutrition composition and food calling effect do not conform to Portunus trituberculatus Miers as bait, and the survival rate of swimming crab is lower, increases weight not obvious.Along with propagating artificially on a large scale, this year, the mixed feed of swimming crab more and more came into one's own, yet current mixed feed is mainly to take fish meal and dregs of beans as main, adds Activities of Some Plants or animal protein, and protein raw materials is single.
Summary of the invention
The defect existing for prior art, technical problem to be solved by this invention is to provide a kind of feed being specifically applied in Crab Portunus trituberculatus Larvae cultivating process, not only promote Portunus trituberculatus Miers feed to reduce internecine phenomenon, and unique formula significantly improve the weightening finish of swimming crab.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
Crab Portunus trituberculatus Larvae is cultivated a feed, mainly by the raw material of following weight portion, is made: spirulina powder 15-25 part, shrimp med 5-15 part, dusty yeast 1-5 part, bacillus subtilis powder 1-5 part, oyster shell powder 1-5 part, micro-0.1-0.5 part, mineral matter 0.1-0.5 part, phagostimulant 1-5 part, soya-bean milk 17-25 part.
Further, described trace element is nicotinic acid, folic acid, vitamin A, vitamin C, Cobastab
2mixture, weight ratio is 1:1:1:1:1.
Further, described mineral matter is the sulfate of iron, magnesium, manganese, zinc, and weight ratio is 6:2:1:4.
Further, described phagostimulant is any one or a few of Kelp Powder, bovine bone powder, dried orange peel powder, degreased pupa powder.
Further, described Crab Portunus trituberculatus Larvae is cultivated feed, mainly by the raw material of following weight portion, is made: 18 parts of spirulina powders, 7 parts of shrimp meds, 2 parts of dusty yeasts, 4 parts, bacillus subtilis powder, 2 parts of oyster shell powders, 0.4 part of trace element, 0.4 part, mineral matter, 2 parts of phagostimulants, 19 parts of soya-bean milk.
Further, described Crab Portunus trituberculatus Larvae is cultivated feed, mainly by the raw material of following weight portion, is made: 20 parts of spirulina powders, 9 parts of shrimp meds, 3 parts of dusty yeasts, 3 parts, bacillus subtilis powder, 2 parts of oyster shell powders, 0.3 part of trace element, 0.2 part, mineral matter, 3 parts of phagostimulants, 20 parts of soya-bean milk.
Further, described Crab Portunus trituberculatus Larvae is cultivated feed, mainly by the raw material of following weight portion, is made: 22 parts of spirulina powders, 11 parts of shrimp meds, 4 parts of dusty yeasts, 2 parts, bacillus subtilis powder, 2 parts of oyster shell powders, 0.4 part of trace element, 0.3 part, mineral matter, 2 parts of phagostimulants, 22 parts of soya-bean milk.
The present invention also provides a kind of method of preparing above-mentioned feed: spirulina powder, shrimp med, dusty yeast, bacillus subtilis powder, oyster shell powder, trace element, mineral matter and phagostimulant are combined, be put in mixer and stir, the pulvis stirring is taken out, put into after container adds soya-bean milk to stir and put into dryer, control between temperature 50 C~60 ℃ of dryer, the time of smoking is 60min, expanded after taking out, granulation.
The present invention compared with prior art, has following beneficial effect:
(1) spirulina is the planktonic algae that Crab Portunus trituberculatus Larvae is liked food most, meets the feed feature of Portunus trituberculatus Miers most;
(2) dusty yeast and bacillus subtilis powder, can regulate probio flora in swimming crab intestines body, strengthens irritability and the autoimmunity of swimming crab;
(3) phagostimulant is pure natural plant pulvis,, containing any additive, is not conducive to improve the appetite of swimming crab, to improving the growth rate of swimming crab, has significant effect.
The specific embodiment
Further set forth by the following examples beneficial effect of the present invention:
Embodiment 1:
15 parts of spirulina powders, 5 parts of shrimp meds, 1 part of dusty yeast, 1 part, bacillus subtilis powder, 1 part of oyster shell powder, 0.1 part of trace element, 0.1 part, mineral matter, 1 part of phagostimulant, 17 parts of soya-bean milk.
Embodiment 2:
25 parts of spirulina powders, 15 parts of shrimp meds, 5 parts of dusty yeasts, 5 parts, bacillus subtilis powder, 5 parts of oyster shell powders, 0.5 part of trace element, 0.5 part, mineral matter, 5 parts of phagostimulants, 25 parts of soya-bean milk.
Embodiment 3:
18 parts of spirulina powders, 7 parts of shrimp meds, 2 parts of dusty yeasts, 4 parts, bacillus subtilis powder, 2 parts of oyster shell powders, 0.4 part of trace element, 0.4 part, mineral matter, 2 parts of phagostimulants, 19 parts of soya-bean milk.
Embodiment 4:
20 parts of spirulina powders, 9 parts of shrimp meds, 3 parts of dusty yeasts, 3 parts, bacillus subtilis powder, 2 parts of oyster shell powders, 0.3 part of trace element, 0.2 part, mineral matter, 3 parts of phagostimulants, 20 parts of soya-bean milk.
Embodiment 5:
22 parts of spirulina powders, 11 parts of shrimp meds, 4 parts of dusty yeasts, 2 parts, bacillus subtilis powder, 2 parts of oyster shell powders, 0.4 part of trace element, 0.3 part, mineral matter, 2 parts of phagostimulants, 22 parts of soya-bean milk.
Embodiment 6:
25 parts of spirulina powders, 5 parts of shrimp meds, 2 parts of dusty yeasts, 2 parts, bacillus subtilis powder, 3 parts of oyster shell powders, 0.2 part of trace element, 0.2 part, mineral matter, 2 parts of phagostimulants, 22 parts of soya-bean milk.
Contrast test:
The feed of commercially available Portunus trituberculatus Miers normal diet and embodiment 1-6 gained is carried out to contrast test, and concrete steps are as follows:
In pond net box cultivating system, select physique stalwartness, the three friendly swimming crab young that body weight is close and carry out the throw something and feed feed of embodiment 1-6 of fortification, and the normal diet of throwing something and feeding contrasts simultaneously, after throwing something and feeding 1 month, Portunus trituberculatus Miers is counted to the comparison of weighing.10 swimming crabs of cultivation in each aquaculture net cage, the object of each feedstuff feeding is 100 swimming crabs.
Contrast test data are as shown in table 1:
Table 1 normal diet and the impact of embodiment feed on Portunus trituberculatus Miers body weight and survival rate
Comparative test result shows: adopt the friendly swimming crab of feedstuff feeding three of the present invention, weightening finish is significantly higher than normal diet, this explanation is by improving the mode of feed formula enriched nutritive, improved the nutrition condition of Portunus trituberculatus Miers, improved its disease-resistant and anti-stress ability, the physique and the cold-resistant resistance against diseases that have strengthened Portunus trituberculatus Miers, its survival rate is compared also and is greatly improved with normal diet.
Above-mentioned example just, for explanation technical conceive of the present invention and technical characterstic, can not limit the scope of the invention with this.Equivalent transformation or modification that all essence according to the present invention is done, within all should being encompassed in protection scope of the present invention.