Economic and environmental effects of providing increased amounts of solid feed to veal calves

Journal of Dairy Science
H MollenhorstI J M de Boer

Abstract

Traditionally, veal calves receive most of their nutrients from milk replacer (MR). Nowadays, however, solid feed (SF; i.e., concentrates and roughages) increasingly substitutes for MR. Studies have shown that providing SF reduces different types of nonnutritive oral behaviors. The objective of this study was to assess the economic and environmental effects of substituting SF for MR in veal calf diets. With respect to environmental effects, we considered the emission of greenhouse gases and land occupation. Substitution rates were based on an experiment in which 160 calves were provided 2 mixtures of SF at 4 levels of dry matter (DM) intake. Mixtures of SF contained either 80% concentrates, 10% corn silage, and 10% straw on DM basis (C80) or 50% concentrates, 25% corn silage, and 25% straw (C50). The 4 levels of SF during the last 17 wk of the fattening period were 20, 100, 180, and 260 kg of DM SF. Additionally, provision of MR was adjusted to achieve equal rates of carcass gain. Substitution rates, representing the SF equivalent needed to substitute for 1 kg of DM MR, were 1.43 kg of DM for C80 and 1.61 kg of DM for C50. Economic effects were assessed based on prices and substitution rates of SF for MR and the possible penalt...Continue Reading

References

Feb 12, 2005·Journal of Animal Science·K A Beauchemin, S M McGinn
Aug 11, 2006·Journal of Dairy Science·J J G C van den BorneW J J Gerrits
Nov 11, 2008·Journal of Animal Science·E LabussiereJ Noblet
Nov 30, 2012·Environmental Science & Technology·Toni Meier, Olaf Christen

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Citations

Mar 19, 2019·Journal of Dairy Science·S I KehoeG Suen

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