Brian Lang

The cost of raising replacement dairy heifers is significant. New studies show how much raising replacements can impact a dairy operation's bottom line.Due to high herd-replacement rates and heifers calving at older ages, many operations need more heifers just to maintain the size of their milking herd.The recently completed analysis of data from the 2010 Ontario Dairy Farm Accounting Project (ODF ...

The success of colostrum feeding to calves is built on four critical components:Timing - How quickly the calf receives colostrum after birth.Quantity - How much colostrum the calf receives.Quality - The concentration of immunoglobulins in the colostrum.Cleanliness - The levels of pathogens in the colostrum. Introduction The most important factor in dairy calf health and survival is feeding th ...

This Factsheet was originally authored by G.A. Surgeoner, Professor, University of Guelph, and revised by Betty Summerhayes, Product Development Specialist, OMAFRA, Guelph, and Brian Lang, Dairy Cattle Production Systems Specialist, OMAFRA, Woodstock. This article replaces OMAFRA Factsheet Rodent Control in Livestock and Poultry FacilitiesOrder No. 07-009.Rats and mice have long been a p ...