Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/121324
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Type: Journal article
Title: Effect of monensin inclusion in supplements for cattle consuming low quality tropical forage
Author: McLennan, S.
Callaghan, M.
Swain, A.
Kidd, J.
Citation: Animal Production Science, 2012; 52(6-7):624-629
Publisher: CSIRO
Issue Date: 2012
ISSN: 1836-0939
Statement of
Responsibility: 
S. R. McLennan, M. J. Callaghan, A. J. Swain and J. F. Kidd
Abstract: A pen feeding study was carried out over 70 days to determine the effects of monensin (M) inclusion in two commercial supplements designed to provide different planes of nutrition to recently weaned steers. Thirty Bos indicus crossbred steers (191.4 ± s.d. 7.1 kg) were individually fed a low quality pangola grass hay (57 g crude protein/kg DM; 497 g/kg DM digestibility) ad libitum (Control) with either a urea/molasses-based supplement of Rumevite Maxi-graze 60 Block (B), fed at 100 g/day, or grain-based Rumevite Weaner Pellets (WP), fed at 7.5 g/kg liveweight (W).day, both with and without M, viz. B, B+M, WP and WP+M, respectively. There were no significant interactions between supplement type and M inclusion for any measurement. Growth rates (main effects) averaged 0.17, 0.35 and 0.58 kg/day for the Control, B and WP supplements, respectively, with all means different (P < 0.05), while the response (P < 0.05) to M across supplement type was 0.11 kg/day. Hay DM intake was similar for the Control and B treatments (18.6 and 19.6 g/kg W.day) but was reduced (P < 0.05) with the WP supplement (16.8 g/kg W.day) while corresponding total DM intakes increased from 18.6 to 20.0 to 23.5 g/kg W.day (all differences P < 0.05), respectively. Monensin inclusion in the supplements did not affect supplement, hay or total DM intake. Inclusion of M in supplements for grazing weaners in northern Australia may increase survival rates although the effect of M with cattle at liveweight maintenance or below requires further investigation.
Rights: Journal compilation © CSIRO 2012
RMID: 0030046307
DOI: 10.1071/AN11273
Appears in Collections:Medicine publications

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