Beef Research
The following technical bulletins are available in PDF format
for downloading:
PI-4 MIN-AD Features & Benefits - Beef
A one-page, point form summary of the main benefits for beef producers and nutritionists.
B-1
Effect of MIN-AD in Combination with Steam Flaked Wheat and Steam Flaked
Corn on Feedlot Performance
A trial was conducted to examine three combinations of steam-flaked
wheat and steam flaked corn with and without MIN-AD. The objective was
to determine whether feedlot performance could be improved by adding a buffer or by changing starch fermentation patterns through mixing grains.
With all three combinations, the cattle receiving MIN-AD had increased
average daily gain and, in two cases, had improved dry matter conversion.
The cost of gain was lowered by the addition of MIN-AD.
B-2
Feedlot Field Trials with MIN-AD
Two feedlot field trials carried out with MIN-AD at commercial
feedlots are described, one using dry-rolled corn and one using barley.
In the dry-rolled corn trial, both average daily gain and dry matter conversion
were increased by about 5% with the addition of MIN-AD. The inclusion
of MIN-AD to barley rations increased dry matter intake by 2.4%, average
daily gain by 9.4%, and dry matter conversion by 6%. In both trials, the
ingredient cost of gain for the cattle on the MIN-AD treatment was reduced
by 5.6%.
B-3
An Evaluation of MIN-AD in Feedyard Diets For Yearling Steers
This Bulletin reports on a performance trial and a metabolism trial with
yearling steers. MIN-AD successfully replaced MgO and CaCO3
as a source of Mg and Ca in finishing diets for yearling steers and no
difference in Mg or Ca digestibility between MIN-AD and MgO or CaCO3
was observed. Steers consuming 3.8% roughage with MIN-AD had similar intake
as steers consuming 7.5% roughage without MIN-AD. Microbial N flow to
the duodenum was numerically increased by the addition of MIN-AD and microbial
efficiency was numerically increased by about 10%.
B-4
A Comparison of MIN-AD and MagnaBuf in a Feedlot Steer Rumen Environment
Two experiments using an in vitro continuous culture system were
conducted to evaluate the effects of Mg source on ruminal characteristics
under typical feedlot diet conditions in a completely randomized design.
Propionic acid production with MIN-AD was 9% higher than with MgO and
over 20% higher than MagnaBuf. Since propionic acid is the primary precursor
to glucose production in the ruminant, this ruminal response could have
a positive impact on energy metabolism, potentially increasing growth
and marbling in feedlot cattle.
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