5results about How to "Improve reproductive performance" patented technology

The invention discloses a compound grease feed additive for improving breeding quality of channa maculata and application. The method comprises the following steps: (1) preparing experimental feed; the method comprises the following steps: respectively preparing an experimental group ARA 1.5 added with 1.5% of arachidonic acid and an experimental group ARA + PC added with 1.5% of arachidonic acid and 1.5% of phosphatidylcholine; (2) feeding; (3) after the culture experiment is finished, treating and detecting the channa maculata; (4) carrying out an artificial propagation test; (5) carrying out ovarian steroid synthesis related gene expression detection; and (6) carrying out data statistical analysis. By adding arachidonic acid (ARA) and phosphatidylcholine (PC) into the feed, the breeding performance of channa maculata and the quality of fry are improved, and the feed has very important significance for improving the aquatic product efficiency of high-quality fry of channa maculata in aquaculture.

The application relates to application of an olive extract in preparation of a daily ration additive for improving reproduction performance of mammals, wherein 0.05 wt% of the olive extract is added in the daily ration of a pregnant mammal, so as to improve embryo survival rate, live birth number, initial birth litter weight and lactation capacity of the mammal; the application explicitly shows the influence of the olive extract on embryo development and lactation capacity of the mammal, and provides a new technical approach for high-value development of olive resources and nutrition regulation of the mother and the child.

The application provides a method for breeding a Paralichthys olivaceus clone improved strain, and the method comprises the following steps: preparing a high-purity Paralichthys olivaceus gynogenesis diploid, preparing a Paralichthys olivaceus double haploid (DH), preparing a double clone hybrid strain, preparing a recombination double haploid (rDH), cultivating the Paralichthys olivaceus recombination double haploid (rDH), and preparing and cultivating the clone improved strain. The Paralichthys olivaceus clone improved strain with fast growth and high reproductive capacity is bred, and the problem of practical application of fish double haploid breeding can be solved.

This invention discloses a method for alleviating cadmium stress on duckweed using ethyl caffeate. With industrial development, cadmium pollution in water bodies seriously threatens the ecosystem and human health, and traditional remediation methods have shortcomings. Although duckweed has the potential for water body remediation, cadmium stress inhibits its growth. This invention, through concentration gradient experiments, determines the maximum Cd concentration that duckweed can withstand. 2+ The optimal concentration of ethyl caffeate for alleviating cadmium stress is 200 μmol, with a concentration of 10 μmol. Adding 200 μmol of ethyl caffeate per 100 ml of cadmium-contaminated water significantly promotes duckweed growth, increases leaf number, fresh weight, and root length, enhances antioxidant enzyme content, reduces MDA content, increases chlorophyll content, and strengthens photosynthesis. It also significantly reduces cadmium accumulation in duckweed, achieving efficient bioremediation of cadmium pollution in water bodies. This method is simple to operate, low in cost, and environmentally friendly, showing broad application prospects in the field of water pollution control.

This invention, entitled "Application of Bifidobacterium animalis subsp. lactis BL-16 and its Astragalus ferment and anti-aging products," belongs to the field of microbial technology. The technical problem to be solved is to provide an anti-aging Bifidobacterium animalis subsp. lactis and its BL-16 fermented Astragalus extract. The key technical point is the application of Bifidobacterium animalis subsp. lactis BL-16 or its fermented Astragalus extract in the preparation of anti-aging compositions. Bifidobacterium animalis subsp. lactis BL-16 and its fermented Astragalus extract can scavenge free radicals in vivo and in vitro and enhance anti-lipid peroxidation capacity, exhibiting good antioxidant and immunomodulatory effects. They can effectively improve survival rate, motility, and reproductive capacity, thus having a good effect on delaying aging.