The first calf paper, published in the May 1919 issue of the Journal of Dairy Science (JDS),
described factors affecting birth body weight of different breeds of calves. Other studies were …

Three recent breakthroughs have resulted in the current widespread use of DNA
information: the genomic selection (GS) methodology, which is a form of marker-assisted …

Traditional marker-assisted selection (MAS) did not result in a widespread use of DNA
information in animal breeding. The main reason was that the traits of interest in livestock …

Dairy cow longevity is an essential economic trait that can supplement the breeding value of
production traits, which is related to the herd time and lifetime milk yield of dairy cows …

Genomic selection was adopted very quickly in the 10 yr after first implementation, and
breeders continue to find new uses for genomic testing. Breeding values with higher …

Genetic improvement in sires used for artificial insemination (AI) is increasing faster
compared with a decade ago. The genetic merit of replacement heifers is also increasing …

In the early 1900s, breed society herdbooks had been established and milk-recording
programs were in their infancy. Farmers wanted to improve the productivity of their cattle, but …

Dairy cattle productive lifespan averages approximately 3 yr after first calving. Changes in
the last decade in reproductive performance, genetic merit, and societal concerns regarding …

Genomic selection (GS) is the use of statistical methods to estimate the genetic merit of a
genotyped animal based on prediction equations derived from large ancestral populations …

Simple Summary The discovery of the genome has been one of the greatest advances in the
development of tools for the genetic improvement of cattle in the last decades. The use of …