52results about How to "Guaranteed hatch rate" patented technology

The invention discloses a method for artificial breeding of sturgeon fry, which comprises the steps of parental gene bank and file building, parent fish selection and cultivation, artificial egg collection and insemination, fry hatching and cultivation, and the like. By collecting wild sturgeons to establish wild parent gene banks, combined with self-cultivated or purchased artificially cultivated parent gene banks, strain files are established, kinship reorganization is carried out, and sturgeon fry with excellent quality are cultivated. The invention carefully cultivates and domesticates the parent fish used for breeding, promotes the healthy growth and development of the parent fish, and fundamentally guarantees the quality of the offspring sturgeon; carefully controls the hatching environment and fry, ensures the hatching rate and the survival rate of the larvae, and obtains high-quality and healthy adult sturgeon. Sturgeon fry for the sturgeon aquaculture industry, which in turn is beneficial to the development of the artificially cultured sturgeon industry in China.

The invention provides a purification and expanding propagation method for propylaea japonica. The method comprises the steps that 1, the propylaea japonica is fed in an insect feeding cage, wherein horsebean seedlings are planted and enough pea aphids are fed in the insect feeding cage, a flowerpot of horsebean seedling planting is wrapped with a preservative film, and the number of the stretching blades of the horsebean seedlings is as little as possible so that most of spawn is spawned on the preservative film; 2, the spawned preservative film is collected, and larvae are hatched in a warm and humid condition; 3, the larvae are taken out in time and put into another insect feeding cage to be fed, after the larvae pupate, the spawn collecting operation in the step 2 is stopped; 4, after the spawn in another insect feeding cage in the step 3 is collected through the preservative film, the step 2, the step 3 and the step 4 are repeated until five generations, and the purified spawn is obtained; 5, after the purified spawn is hatched, expanding propagation in the insect feeding cage is conducted. The purification and expanding propagation method is beneficial to purify the generation number of propylaea japonica in the field and reduce newly hatched larvae and imagoes feeding of the spawn indoors, the operation is easy, the cost is low, and purification and expanding propagation for propylaea japonica indoors can be completed effectively.

The invention relates to a paper bag hatching method and paper bag hatching equipment. According to the method, when eggs are moved to a hatcher ray, hatching eggs are placed into paper bags till young birds are grown; the hatching eggs placed in the same paper bag are from the same source; and the hatching eggs which are from the same source and in the same paper bag are from the same family. The equipment comprises paper bags, wherein each paper bag comprises a front side, a back side, a left side, a right side, a bottom side and a top cover; the top cover is openable; and the paper bags are made of a breathable material or have one or a plurality of vents on at least one side. The method and the equipment facilitate the differentiation of young birds from different lines and families, prevent young birds from different lines and families pecking one another and indirectly contacting each other through dung and villus, and thus effectively inhibit horizontal spread of diseases such as avian lymphoid leucosis among different young birds.

The invention belongs to the technical field of hatching, and particularly relates to a technology for repairing and hatching shell-broken hatching eggs. The technology comprises the following steps:disinfecting hatching eggs, then when candling is performed on the eggs on a seventh day of hatching, repairing the shell-broken hatching eggs by using a sealant, placing the repaired eggs into an incubator, and continuing to perform hatching with normal hatching eggs. According to the invention, the hatching rate of the repaired hatching eggs is greatly improved, the economic loss is reduced, andthe economic benefits are improved.

The present invention provides an artificial large-scale hatching method for the roe of the Tibetan bifidus cereus, the artificial large-scale hatching method, which is characterized in that the fertilized eggs are placed in the hatching frame for hatching in flowing water before the embryo formation period of the fertilized eggs ; After the fertilized eggs develop to the stage of embryonic formation, the dead eggs are removed, and the fertilized eggs are moved into the incubator to hatch. The hatching method has a high survival rate of hatched eggs and high production efficiency, and can be produced on a large scale in Tibet.