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...
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...
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 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: Canadian Dairy Network
It has been said by many researchers around the world that "Phenotype is King!" in this era of genomics. What does this really mean? In Canada, there has been a recent surge of discussion on this...
Source: University of Minnesota Extension
Brad Heins, Extension educator; Glenda Pereira, West Central Research and Outreach Center; Les Hansen, College of Food, Agricultural and Natural Resource Sciences
Quick facts
The ideal dairy cow should:
Produce high fat and protein.
Produce a calf...
Source: Canadian Dairy Network
2019 will mark Canada's 10th anniversary of the introduction of official genomic evaluations. When they were first introduced by Canadian Dairy Network (CDN) in August 2009 for Holsteins, there was much hesitation and questioning about whether the...
Have you noticed the new Herd Health Profit Dollars (HHP$) index? Jeff Ziegler, vice president of dairy cattle breeding, and Bruce Smith, district sales manager at COBA/Select Sires Inc., are here to talk about this new genetic tool. Follow...
Source: Canadian Dairy Network
Economics drives profitability! In the dairy industry, there have been various factors in recent years that have affected the economics of genetic selection and herd management decisions. One of the significant outcomes has been a growing...
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...
