Abstract: Methods, compositions, and systems are provided for managing bovine subjects in order to maximize their individual potential performance and edible meat value, and to maximize profits obtained in marketing the bovine subjects. The methods and systems draw an inference of a trait of a bovine subject by determining the nucleotide occurrence of at least one bovine SNP that is identified herein as being associated with the trait. The inference is used in methods of the present invention to establish the economic value of a bovine subject, to improve profits related to selling beef from a bovine subject; to manage bovine subjects, to sort bovine subjects; to improve the genetics of a bovine population by selecting and breeding of bovine subjects, to clone a bovine subject with a specific trait, to track meat or another commercial product of a bovine subject; and to diagnose a health condition of a bovine subject.

Abstract: The present invention provides devices and methods for tracking animals. More particularly, embodiments of the present invention provide a method of tracking an animal that includes assigning an animal identification to a first animal, collecting a biological sample from the first animal and associating the first animal with each premises at which the first animal is located. The invention further provides an identification device that includes a tag portion and a sample portion. The tag portion can be configured to be attached to animal in any method known in the art. The sample portion can be detachably coupled to the tag portion and can include a biological collector that can collect a biological sample from the animal.