30 results about "Penaeus stylirostris" patented technology

The invention discloses a penaeus vannamei phagostimulant. The penaeus vannamei phagostimulant comprises following components in parts by weight: 10-15 parts of glycine betaine, 6-8 parts of taurine, 2-3 parts of nucleotide, 10-15 parts of alanine, 10-15 parts of glycine, 3-5 parts of smoked plums,1-4 parts of spina date seeds, 2-6 parts of mints and 3-6 parts of rhizoma kaempferiae. According to the penaeus vannamei phagostimulant, the phagostimulant which is 0.05%-2% of the weight of penaeus vannamei compound feeds is added into the penaeus vannamei compound feeds so as to cover bad smell in the compound feeds and stimulate sensory organs of penaeus vannamei to promote the penaeus vannamei to ingest and accelerate the growth; furthermore, the phagostimulant is used for inducing the penaeus vannamei to ingest so as to reduce residual feeds in a water body, increase the utilization rate of the feeds and alleviate secondary pollution to the water by the residual feeds, and furthermore, disease risks of the penaeus vannamei are reduced and the survival rate of the penaeus vannamei is increased.

The invention provides a multi-vitamin premix for improving the intestinal health of penaeus vannamei boone. The multi-vitamin premix is characterized in that vitamins serve as main components, the Chinese herbal medicines are compounded for synergy, and the vitamins are reasonably compounded for the problem that the intestinal health is caused to the penaeus vannamei boone in the culture process due to factors such as feed environment and the like; proven by test, the incidence rate of intestinal diseases of the penaeus vannamei boone can be obviously reduced, the survival rate of culture can be increased and the culture income can be improved.

The invention discloses a directional mating method for Penaeus vannamei Boone. The method includes the steps that parent prawns are selected and subjected to nutrient enrichment cultivation, a mating scheme is set, male prawns are ripened and independently cultivated, female prawns are ripened and independently cultivated, directional mating parent prawns are selected and subjected to directional mating, and spawning and fertilization are performed. The method is designed according to the life habits and the mating, fertilization and spawning characteristics of the Penaeus vannamei Boone, and possible injuries to the male prawns and the female prawns in the artificial fertilization process can be avoided. In the whole mating process, it is only needed to determine the serial numbers of the parent prawns for mating, operation is convenient and easy, and the genealogical relationship of established families can be accurately established. The genetic relationship of the individuals of the families is determined, the mating scheme is designed artificially, and inbreeding depression of the established families can be effectively avoided. The method has the advantages of being high in success rate and low in parent prawn loss, and overcomes the defects that in the prior art, when Penaeus vannamei Boone families are established in an artificial fertilization mode, spermatophore is prone to falling off, the fertilization rate is low, and half sibs cannot be established easily.