Source: International Dairy Federation
Introduction
Since the domestication of cattle for milk and meat purposes more than 6,000 years ago, farmers have used reproductive technology to improve their cattle. In the beginning, farmers used simple breeding programs selecting a desired red...
Source: Lactanet Canada
Each year, based on official animal registration and pedigree information within its database, Lactanet Canada computes current statistics related to the level of inbreeding within the Canadian cow population of each dairy breed. In this way, the...
Source: Journal of Dairy Science
YounesMiar*†MehdiSargolzaei†‡Flavio S.Schenkel†
*
Department of Animal Science and Aquaculture, Dalhousie University, Truro, Nova Scotia, Canada B2N 5E3
†
Centre for Genetic Improvement of Livestock, Department of Animal Biosciences, University of Guelph, Guelph, Ontario, Canada N1G...
Claire Wathes, Laura Buggiotti and Zhangrui Cheng
Department of Pathobiology and Population Sciences, Royal Veterinary College, Hatfield, Hertfordshire, AL9 7TA, UK Email: dcwathes@rvc.ac.uk
Take Home Messages
Many viral diseases are endemic in cattle populations. Their impact on production losses is established,...
Source: Holstein Canada, By Gordon Atkins, D.V.M
Today’s dairy cow deals with some of the greatest challenges ever faced in the history of the dairy industry. Some of these challenges include the stresses associated with unprecedented levels of production, the...
Source: Select Sires, by Mel DeJarnette, director of technical research, Select Sires Inc.
For any animal breeding operation with progressive genetic goals, the youngest animals in the herd should be the most valuable animals. This is especially true for the dairy...
Source: National Farm Animal Care Council Code of Practice for the care and handling of farm animals – Dairy Cattle, Section 3.12
Improved genetics and environmental factors have allowed for a steady increase in milk production per cow. However, increased milk...
Source: WCDS Advances in Dairy Technology
Take Home Messages
In-vitro produced embryo transfer (IVP-ET) in dairy herds greatly reduces the genetic lag with service sires. The value of this decreased genetic lag may overcome the high cost of IVP-ET.
The...
Source: Journal of Dairy Science
J. Dubuc, J. Denis-Robichaud, Faculté de Médecine Vétérinaire, Université de Montréal, C.P. 5000, Saint-Hyacinthe, Québec, J2S 7C6, Canada
ABSTRACT
The objectives of this study were to quantify the herd-level prevalence of postpartum diseases in a large number of...
Jocelyn Dubuc, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC Email: jocelyn.dubuc@umontreal.ca
Take Home Messages
The best metric to quantify the overall herd reproductive performance is the pregnancy rate. In Holstein herds, it should be ≥ 25%.
When the...
