Source: Lactanet Canada
Industry Standards Committee, Lactanet Canada April 20, 2020
Background
During the COVID-19 pandemic, routine milk recording services have been significantly disrupted. Service is provided, but on a strict ‘No Contact’ basis, where most notably, Lactanet staff are not providing...
Source: Lactanet
A prominent change with the April 2020 official genetic evaluation release is the annual update of the Pro$ formula. Following the revision of Pro$ in 2019, the first since its introduction in 2015, it was decided to implement...
Source: Holstein Canada
Genetic Traits and Colour Codes
Gene Name
Description
Gene and Expression Code
BY
Brachyspina
(causes abortion & stillborn, shortened spinal cord, long legs & abnormal organs)
BYC = tested carrier of Brachyspina
BYF = tested non-carrier of Brachyspina
CVM
Complex Vertebral Malformation
(causes still-born calves, abortions, and early...
Source: Lactanet
Each year, the genetic base used to express genetic evaluations in Canada is updated in conjunction with the first official release. The definition of each genetic base used is therefore as follows:
The table below indicates the amount of...
Source: Lactanet Canada
Where the relative emphasis placed on each of the three main components in each breed is presented in the following table along with the multiplicative factors for each component.
Source: Lactanet
In April 2019, Canada’s profit-based selection index, Pro$, was updated to reflect current economic values and consider additional expenses and traits. Pro$ is a tool to maximize genetic response for daughter lifetime profitability and is based on actual...
Source: WCDS Advances in Dairy Technology
Mark Carson
EastGen Genetics, Guelph, ON
Email: Mark.Carson@EastGen.ca
Take Home Messages
Reproductive performance has improved in herds larger than 150 cows in central and western Canada since 2011.
Improvements in heifer inventory management can be seen in...
Source: Dairy Research Cluster 3
Principal Investigator: Flavio Schenkel (University of Guelph)
Co-Investigators: Christine Baes, Angela Canovas, Janusz Jamrozik (University of Guelph)
Collaborators: Xin Zhao (McGill University), Ronaldo Cerri (University of British Columbia), Stephen LeBlanc, Eduardo Ribeiro, Filippo Miglior (University of Guelph)
National...
Source: Dairy Research and Extension Consortium of Alberta
Shadi Nayeri and Dr. Paul Stothard, University of Alberta
Why is this important?
Poor or inadequate visual estrus detection is the major cause of low insemination risk (the percentage of eligible cows or heifers that...
Source: Lactanet
Average lactation yields have steadily increased year after year. An observation at Canadian Dairy Network (CDN) is that the typical lactation curve has also gradually become flatter over time. Basically, there are various ways that a cow can...
