99 results about "Breeding program" patented technology

The invention discloses a tuna pond culture strategy optimization method and system based on meteorological influence analysis, and the method comprises the steps: collecting regional meteorological data and pond culture monitoring data, and constructing a multi-modal pond ecological feature vector; establishing a weather-water body dynamic coupling model by using a space-time diagram neural network, and generating water body situation response prediction information; a breeding regulation and control strategy is made based on the prediction information, and strategy self-adaptive optimization is achieved through real-time monitoring data; evaluating the anti-disaster capability of the tuna after the meteorological influence is finished, screening high-quality germplasm resources by combining genetic analysis, and generating an anti-disaster breeding scheme. According to the method, full-chain optimization from meteorological early warning to culture regulation and control to genetic breeding is achieved, and the climate toughness and economic benefits of tuna pond culture are comprehensively improved.

The invention provides an ecological pasture cow breeding and health management method and system based on meteorological data, and relates to the technical field of cow breeding and health management. The method comprises the steps of collecting meteorological data and dairy cow breeding basic data in real time; key meteorological factors influencing cow breeding are extracted; defining a meteorological appropriate threshold value corresponding to each breeding stage; cattle herd screening adaptive to weather is realized; selecting a time period with proper temperature to carry out hybridization operation; formulating meteorological guarantee schemes according to pregnancy stages; and quantifying the influence of meteorological conditions on the breeding core indexes, and optimizing a breeding plan and resource allocation based on an evaluation result. Through a perfect dairy cow breeding management process, the breeding resource utilization efficiency is improved, a traceable and iterable analysis framework is provided for breeding plan optimization, the precise and efficient development of ecological pasture breeding management is promoted, the cost of a pasture is reduced, and meanwhile, the population quality and economic benefits are improved.

The present disclosure is in the field of plant breeding. The disclosure provides methods for breeding corn plants having a brachytic trait using marker-assisted selection. The disclosure further provides brachytic germplasm, markers associated with a brachytic trait for introgressing the trait into elite germplasm in a breeding program. This disclosure also provides brachytic or dwarf elite corn varieties having yield equal to or higher than conventional non-brachytic corn varieties.

The invention discloses a comprehensive selection index formulation and genetic progress prediction method based on a multivariate pig breeding system. The method comprises the following steps: 1) establishing a bioeconomics model; 2) selecting breeding target characters; 3) constructing a total profit equation of different systems; 4) calculating a character expression discount value by adopting a gene flow method; 5) establishing a character economic value sensitivity analysis method; 6) calculating a relative economic weight and a standardized selection index of the character; and 7) establishing a long-term genetic progress prediction method. According to the method, the breeding target is determined for the selected proper bioeconomics model, the comprehensive selection index is formulated, the comprehensive selection index calculation requirement of a production enterprise under most conditions is met, meanwhile, a long-term genetic progress prediction method is provided, reference can be provided for the expected achievement of a breeding plan in advance, and the method is suitable for large-scale popularization and application. The method provides help for reduction of wrong selection of breeding targets and scientific formulation of selection indexes, and is beneficial to acceleration of genetic improvement of pigs.

The invention relates to an SNP molecular marker combination related to stichopus japonicus saponin traits and application, belongs to the field of molecular biology, and provides an SNP molecular marker combination related to stichopus japonicus saponin content screened based on a whole genome association analysis technology, and a detection kit and a chip developed based on the SNP molecular markers. In a stichopus japonicus breeding procedure, individuals with more than one character dominant mutation site of the SNP molecular marker are screened as parents, so that the stichopus japonicus breeding process can be promoted; or offspring seeds with more than one character dominant mutation site of the SNP molecular marker are selected for breeding in the breeding process, so that the content of saponin in the stichopus japonicus can be remarkably increased, and the economic value and the market competitiveness of the stichopus japonicus are improved.

The present disclosure relates to methods, products, and compositions useful for deriving bovine induced blastoids. Methods are described that allow for juvenile stem cell aggregation and induced blastocyst formation. The invention further provides an aggregation culture medium and an induced blastocyst-like culture medium which are suitable for promoting aggregation of the young stem cells and preparing the induced blastocyst-like. The bovine induced blastoids can be used in selection and breeding procedures, including the replication of pre-implant embryos with desired characteristics and in vitro breeding including a cross-generation breeding cycle from parent germ cells and / or embryos to progeny embryos.

The invention relates to the technical field of molecular genetic breeding, in particular to an SNP (Single Nucleotide Polymorphism) molecular marker related to chest circumference of beef cattle and application of the SNP molecular marker. GWAS research is carried out on a beef cattle group through a beef cattle promoter breeding chip, an SNP site highly related to the chest circumference character is found, the position of the site on the No.8 chromosome of a cattle reference genome is 94541673, C / T polymorphism exists, the nucleotide sequence formed by the upstream and downstream can be shown as SEQ ID NO.1, and the nucleotide sequence formed by the upstream and downstream can be shown as SEQ ID NO.2; the chest circumference of the beef cattle of which the genotype is TT or CT at the SNP site is greater than that of the beef cattle of which the genotype is CC, namely, the T allele is an excellent allele related to a larger chest circumference character. The SNP molecular marker provided by the invention can accurately and efficiently identify the chest circumference of the beef cattle individual, and has important value in beef cattle early selection and breeding plans.