Page 9 - MWC 8-6-20s
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Supplementing to Stretch Pastures
The Midwest Cattleman · August 6, 2020 · P9
By Jeff Lehmkuhler, PhD, PAS necessary. Other researchers
Associate Extension Professor,
University of Kentucky have demonstrated that pro-
Drought continues to im- viding protein supplementa-
tion with starch containing
pact the high plains area feedstuffs, levels as high as
stretching down to the pan- 6-8 pound/1,000 lb of body
handle of Texas. The dry weight have had minimal im-
conditions will continue to pacts on fiber digestion.
impact pastures potentially Providing supplementation
lowering beef cattle numbers to cattle grazing pastures,
at year’s end. High tempera- the impact on forage intake
tures and limited rain will dry will be dependent upon as-
out pastures and limit forage sociative effects that may
regrowth on recently cut hay occur in the rumen. Providing
fields. As forage growth slows, protein to correct a ruminal
supplementation may be nitrogen source deficiency
needed to provide beef cattle may enhance fiber digestion
adequate levels of nutrients and increase dry matter in-
to support target production take having a positive im-
levels and limit condition loss pact. Supplementing with
of lactating cows. excessive starch and reduc-
Fibrous coproduct feed- ing rumen pH and limiting
stuffs that are low in starch available nitrogen sources for
but high in digestible fiber Having choices is
microbes will lead to lower in-
work well for supplement- taining 30% cottonseed hulls on low quality forage diets. takes. In general, forage and
always better.
ing cattle on a high forage are effective for developing Therefore, to mitigate nega- supplement exchanges often
diet. Soybean hulls, corn glu- 2-6-month-old dairy heifers. tive associative effects pro-
ten feed, beet pulp, distillers Many commercial precondi- tein supplementation may be continued on page 21
grains, wheat midds, and tion and creep feeds contain
rice bran are a few common- cottonseed hulls as a fiber Like having four new formulations of BRD vaccine to choose from,
Having choices is
ly available feedstuffs that source. The price of cotton- for instance. Or choosing to do business with someone who gives
would be lower in starch and seed hulls can be a limitation Having choices is
always better.
high in digestible fiber. These for their utilization. Having a you an experience as smooth as their vaccines. Choose both,
always better.
feedstuffs would be high- nutrient content lower than when you choose Huvepharma and RESPIVax.
er in available energy than typical fescue hay, the price
most pasture forages that are paid should be similar or less Like having four new formulations of BRD vaccine to choose from,
going or already dormant. De- than what one would pay for for instance. Or choosing to do business with someone who gives
Like having four new formulations of BRD vaccine to choose from,
pending on the maturity and hay. for instance. Or choosing to do business with someone who gives
you an experience as smooth as their vaccines. Choose both,
digestibility of the forages, Starch containing feed- Having choices is you an experience as smooth as their vaccines. Choose both,
supplements could provide stuffs such as wheat, barley, when you choose Huvepharma and RESPIVax.
when you choose Huvepharma and RESPIVax.
twice as much energy on a corn, and oats are available to always better.
dry weight basis. Therefore, supplement energy to grazing
supplementation would need cattle. Due to negative asso-
to be limited and not offered ciative effects in the rumen
free choice to avoid over con- when feeding starch supple- Like having four new formulations of BRD vaccine to choose from,
ditioning as well as to avoid ments to cattle consuming
digestive upsets. a predominate forage-based for instance. Or choosing to do business with someone who gives
Cottonseed hulls are lower diet, these feedstuffs should you an experience as smooth as their vaccines. Choose both,
in digestible energy than the be limited if one wishes to when you choose Huvepharma and RESPIVax.
supplements listed above avoid lowering fiber digest-
and most cool-season forag- ibility. Previously, summaries
es. Cottonseed hulls would be of supplementation research
deemed as more of a forage re- would indicate that offering
placement than a supplement. 0.3% of body weight or less
The crude protein value is low would minimize negative as-
ranging from 4-6% typically sociative effects of starch sup-
and the protein is relatively plementation. This would be
low in digestibility. The acid equivalent of approximate-
detergent value is reported ly 3-3.5 pounds of corn per
to be high, near 65%, leading 1,000 pounds of body weight.
to a relatively low calculat- Supplementation with starch
ed Total Digestible Nutrient containing feeds can lead
(TDN) value ranging 34-42%. to a decrease in ruminally New Choices. New Possibilities.
Work at North Carolina has available nitrogen and amino New Choices. New Possibilities.
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