CDCB delivers the latest news on genetic improvement, research and U.S. evaluations through its monthly newsletter, dairy media, and events.
Recumbency in Holstein Calves
April 3, 2023
Researchers at Penn State University have been collaborating with colleagues at USDA’s Agricultural Research Service to study a new genetic defect in Holstein cattle. This defect is characterized by otherwise healthy animals that are unable to stand. This condition, currently called calf recumbency, has proven to be more complex than other known genetic defects.
BH14 has been added to the list of genomic haplotypes reported in the U.S., following USDA AGIL analysis of records in the CDCB database. Routine publication of BH14 status will support breed fertility improvement by allowing appropriate selection and mating of males and females.
In 2021, CDCB USDA AGIL and NDHIA (National Dairy Herd Information Association) started a multi-year project to update or develop new milk yield projection factors and develop reliable tools for on-farm management. The first learnings of this comprehensive project have been presented in recent articles and seminars.