Effect of monensin inclusion in supplements for cattle consuming low quality tropical forage

McLennan, S.R., Callaghan, M.J., Swain, A.J. and Kidd, J.F. (2012). Effect of monensin inclusion in supplements for cattle consuming low quality tropical forage. In: David Hopkins, Sue Hatcher and Chris Anderson, Proceedings of the Australian Society of Animal Production: Volume 29. 2nd Australian and New Zealand Societies of Animal Production Joint Conference, Lincoln, New Zealand, (624-629). 2-5 July 2012. doi:10.1071/AN11273


Author McLennan, S.R.
Callaghan, M.J.
Swain, A.J.
Kidd, J.F.
Title of paper Effect of monensin inclusion in supplements for cattle consuming low quality tropical forage
Conference name 2nd Australian and New Zealand Societies of Animal Production Joint Conference
Conference location Lincoln, New Zealand
Conference dates 2-5 July 2012
Proceedings title Proceedings of the Australian Society of Animal Production: Volume 29   Check publisher's open access policy
Journal name Animal Production Science   Check publisher's open access policy
Place of Publication Collingwood, VIC, Australia
Publisher CSIRO
Publication Year 2012
Year available 2012
Sub-type Fully published paper
DOI 10.1071/AN11273
ISSN 1836-0939
1836-5787
Editor David Hopkins
Sue Hatcher
Chris Anderson
Volume 52
Issue 6-7
Start page 624
End page 629
Total pages 6
Collection year 2013
Language eng
Abstract/Summary 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.
Keyword Performance
Pasture
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes This special issue of Animal Production Science contains plenary and four-page papers submitted in Australia for the 29th Biennial Conference of the Australian Society of Animal Production which was held jointly with the 72nd Annual Conference of the New Zealand Society of Animal Production. The Second Joint Conference of the New Zealand Society of Animal Production and the Australian Society of Animal Production was held in Lincoln, New Zealand, July 2012. Papers that were submitted in New Zealand are published in the Volume 72 of the Proceedings of the New Zealand Society of Animal Production. One page papers submitted in Australia are published in the Proceedings of the 29th Biennial Conference of the Australian Society of Animal Production.

 
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