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Published online by Cambridge University Press: 22 November 2017
In a 2 year calving system, growth rates of at least 0.65 kg/d are required in the first winter, preferably at only moderate concentrate input levels. One potential method of increasing feed efficiency and reducing costs is to use feed additives. A trial was carried out to examine the use of two feed additives as supplements for heifer calves offered silage and concentrates.