Inclusion of cottonseed meal into loose mineral mix supplements increases the voluntary intake of the supplement by grazing heifers

Dixon, R. M., Anderson, A. and Petherick, J. C. (2016) Inclusion of cottonseed meal into loose mineral mix supplements increases the voluntary intake of the supplement by grazing heifers. Animal Production Science, 57 2: 315-319. doi:10.1071/AN15181


Author Dixon, R. M.
Anderson, A.
Petherick, J. C.
Title Inclusion of cottonseed meal into loose mineral mix supplements increases the voluntary intake of the supplement by grazing heifers
Journal name Animal Production Science   Check publisher's open access policy
ISSN 1836-0939
1836-5787
Publication date 2016-03-22
Year available 2016
Sub-type Article (original research)
DOI 10.1071/AN15181
Open Access Status DOI
Volume 57
Issue 2
Start page 315
End page 319
Total pages 5
Place of publication Clayton, VIC Australia
Publisher C S I R O Publishing
Collection year 2017
Language eng
Formatted abstract
Loose mineral mix (LMM) supplements based on ingredients such as salt, urea and minerals offered ad libitum are widely used to provide additional nutrients to grazing cattle, but it is often difficult to achieve target intakes. An experiment with heifers grazing mature tropical pasture examined the effects of substituting 80, 160 or 320 g/kg of the salt in a LMM supplement with cottonseed meal on the voluntary intake of the LMM supplements by paddock groups of heifers over 10 weeks. Average voluntary intake of a LMM containing (g/kg) 640 salt, 300 urea and 60 ammonium sulfate (40.2 g DM and 6.14 g total nitrogen/day) was increased linearly (P < 0.001) to 50.8 g DM and 8.88 g total nitrogen/day when up to 320 g/kg cottonseed meal was substituted for salt in the LMM. This increase in intake of nitrogen in LMM was due to the increase in voluntary intake of the supplement rather than the increased nitrogen concentration of supplement. The distribution of daily intake of supplement within paddock groups of heifers was estimated during Weeks 5 and 10 using supplements labelled with lithium sulfate. Neither the coefficient of variation within paddock groups of heifers in supplement intake (mean 96%), nor the proportion of non-consumers of supplement (mean 17%), was changed (P > 0.05) by substitution of salt with cottonseed meal. In conclusion, the inclusion of a palatable protein meal into LMM increased the voluntary intake of this type of supplement.
Keyword Cattle
Lithium marker
Palatability
Supplement intake
Variability in intake
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes published online 22 March 2016

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Queensland Alliance for Agriculture and Food Innovation
 
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Created: Sat, 02 Apr 2016, 03:28:53 EST by Melissa Rowan on behalf of Qld Alliance for Agriculture and Food Innovation