Stopping criteria for genetic improvement software for beef-cattle mating selection

Genetic Improvement of Reproduction in Beef Cattle

Reproduction is a key profit driver in beef cattle production systems around the world. However genetic evaluation for reproduction traits is generally limited or non-existent. This is likely a function of low levels of recording reproduction traits, and low heritabilities. Traditional BLUP based genetic evaluations have been used effectively in beef for generating estimated breeding values and...

Genetic selection for temperament traits in dairy and beef cattle

Animal temperament can be defined as a response to environmental or social stimuli. There are a number of temperament traits in cattle that contribute to their welfare, including their response to handling or milking, response to challenge such as human approach or intervention at calving, and response to conspecifics. In a number of these areas, the genetic basis of the trait has been studied....

Stopping Criteria for Ensemble-Based Feature Selection

Selecting the optimal number of features in a classifier ensemble normally requires a validation set or cross-validation techniques. In this paper, feature ranking is combined with Recursive Feature Elimination (RFE), which is an effective technique for eliminating irrelevant features when the feature dimension is large. Stopping criteria are based on out-of-bootstrap (OOB) estimate and class s...

Beef Cattle Improvement

A Seasonal Mating System for Beef Cattle in Central Queensland

It has been shown by a number of workers that seasonal mating is desirable in the Queensland beef industry because of its effect on calf growth, and the Iiveweight of breeding cows. Sutherland (1961) reported that calves born following an October to December mating were approximately 45 kg heavier at 270 days of age than were calves born following a January to June mating. In addition, Stubbs (...