Determinants of prices for purebred beef bulls

Prevalence of Bovine Leukemia Virus in Young, Purebred Beef Bulls for Sale in Kansas

A study was conducted to determine the prevalence of bovine leukemia virus (BLV) in young (less than 2 years of age), purebred beef bulls for sale in the state of Kansas, and to identify geographic differences in BLV prevalence within the state. Serum samples from young, purebred beef bulls submitted to the United States Department of Agriculture for brucellosis testing as part of Kansas state ...

Sexual Aggressiveness in Beef Bulls

Estimation of Carcase Composition of Beef Bulls

The regression of muscle:bone ratio on carcase weight was 0.0055 k 0.0017 kg. The mean muscle: bone ratio adjusted to a carcase weight of 213 kg was 3.99 * 0.20. There was little variation in muscle:bone ratio among individuals and the differences between sire progeny groups were not significant. However, the number of progeny within each group was small and a wider sampling is required to esta...

Fertility of yearling beef bulls during mating.

Crossbred (Bos taurus) yearling beef bulls were assessed for breeding soundness and physical traits prior to multi-sire natural mating at pasture. Bulls (n = 60) were assigned to six groups of nine or 10 bulls and two bull-groups were rotated on 14-day intervals during a 63-day mating season in each breeding herd (n = 3) of 191-196 cows. The remaining bulls (n = 14) were maintained under simila...

Demasculinization of Beef Bulls by LH Immunization