摘要:
Disease resistance in domesticated fowl has been associated with the B and Rfp-Y systems of major histocompatability genes. A method for breeding domesticated fowl to produce disease resistant offspring involves selecting at least one parent that has a B genotype, an Rfp-Y genotype or both that is characteristic of disease resistance and mating that parent with a second parent to produce a disease resistant offspring.
摘要:
Methods of selecting fish for breeding and optimum growth in conditions of various salinity are disclosed. Fish are selected for growth in specific salinity based on their prolactin 1 genotype. A simple sequence repeat polymorphism (microsatellite) in the tilapia prolactin (prl 1) promoter is associated with differences in prl 1 expression and differences in growth in nullsalt-challengednull or nullsalt-effectednull fishes. This discovery suggests that dinucleotide microsatellites may represent an under-appreciated source of genetic variation for regulatory evolution, and belie the textbook interpretation that non-coding microsatellite length variation lacks functional consequences. Thus, the methods of the invention include determining or selecting the salinity of the environment in which the fish will be grown; determining the prolactin genotype of at least one male and at least one female fish being considered for breeding; breeding male and female fish having the desired genotype(s) to result in offspring having known, predictable genotypes; and raising the fish in a salinity environment compatible with the fishes' genotype(s).
摘要:
Disclosed herein are genetic markers for animal meat quality and reproductive efficiency, methods for identifying such markers, and methods of screening animals to determine those more likely to produce larger litters and/or better meat quality and preferably selecting those animals for future breeding purposes. The markers are based upon the presence or absence of certain polymorphisms in the PRKAG3 gene.
摘要:
A novel sequence of the pig myogenin gene and methods of using the myogenin gene and its products. Also disclosed are methods for detecting different alleles of the pig myogenin gene, which different alleles are associated with differences in the genotypic and/or phenotypic traits of the pigs having those alleles. Methods for distinguishing between alleles resulting in different phenotypes, particularly using techniques involving selective amplification of pig myogenin gene derived materials are also disclosed. These techniques are especially suitable for selecting animals to be used in breeding programs. Breeding programs employing such techniques are also disclosed.
摘要:
The present invention relates to materials and methods for identifying animals that are resistant or susceptible to diseases associated with intracellular parasites such as brucellosis, tuberculosis, paratuberculosis and salmonellosis. More particularly, the present invention relates to the identification of a gene, called NRAMP1, which is associated with the susceptibility or resistance of an animal, such as an artiodactyla to diseases such as brucellosis, tuberculosis, paratuberculosis and salmonellosis. Still more particularly, the present invention relates to the identification of specific sequences of bovine NRAMP1 which associate with resistance or susceptibility to ruminant brucellosis, tuberculosis, paratuberculosis and salmonellosis, and to the method of identifying said sequences to identify animals who are susceptible or resistant to disease.
摘要:
A method and test kit for deterining milk production in bovines is described. The acetyl coenzyme A synthetase (ACS) production is determined and related to milk production. The method is useful in selection and/or breeding to enhance milk production. Recombinant microganisms, plasmids and ACS is also described.
摘要:
Disclosed herein are genetic markers for favorable reproductive traits in animals such as litter size, and weaning weight. Methods for identifying such markers, and methods of screening animals to determine those more likely to produce favorable reproductive traits and preferably selecting those animals for future breeding purposes. The markers are based upon the presence or absence of certain polymorphisms in the pig reproductive genes, including retinol binding protein 4, retinoic acid receptor gamma, melatonin receptor 1a, and vascular cell adhesion molecule 1
摘要:
Disclosed herein are genetic markers for pig litter size, methods for identifying such markers, and methods of screening pigs to determine those more likely to produce larger litters and preferably selecting those pigs for future breeding purposes. The markers are based upon the presence or absence of certain polymorphisms in the pig prolactin receptor gene.
摘要:
Disclosed herein are genetic markers for pig litter size, methods for identifying such markers, and methods of screening pigs to determine those more likely to produce larger litters and preferably selecting those pigs for future breeding purposes based on the ESR polymorphisms. The markers are based upon the presence or absence of certain polymorphisms in the pig estrogen receptor gene. Preferably, the polymorphism is a restriction fragment length polymorphism (RFLP).
摘要:
An assay for a genetic marker associated with increased milk production is disclosed. Also disclosed are kits for use in connection with the assay and breeding methods that use the assay. The assay centers on finding a genetic marker in a bovine cell (e.g. in the DNA of the cell). The presence of the marker is confirmed by exposing a gene sequence from the cell to a restriction enzyme so as to yield gene fragments of varying lengths. During a separation step there is a separation of some of the fragments from others (such as by using electrophoresis), and there is then a hybridization of a plurality of probes that contain a portion of bovine prolactin sequence to the separated fragments. The probe is radiolabelled. Then, there is a comparison of the results of the hybridization with the hybridization results for a gene sequence known to either have the marker or not have the marker. The assay appears to be of greatest utility in connection with the Carlin-M Ivanhoe Bell Holstein family.