Page 31 - MWC 2-3-2022s

COLD STRESS The Midwest Cattleman · February 3, 2022 · P31
continued from page 13
to make sure it is adequate. below the critical tempera-
There is a range of tem- ture the digestibility of the
perature where cattle are ration decreases by 1 per- Example of Effect of Temperature on Energy Needs
neither too hot nor too cold cent. This means that when
and their performance is the temperature drops below Effective Extra TDN Extra Hay Needed Extra Grain
optimal. This temperature the critical temperature the Temperature needed (lbs/cow/day) (lbs/cow/day)
range is called the thermo- cattle need to be fed better. 50 F 0 0 0
neutral zone. It is the tem- It may be that more or better +30 F 0 0 0
perature range where the hay needs to be fed. 10 F 20% 3-4 lbs 2-2.5 lbs
fewest nutrients are needed It has been suggested that -10 F 40% 7-8 lbs 4-6 lbs
to maintain bodily functions. an energy supplement level
For cattle the lower tempera- continued on page 32
tures of the thermoneutral
zone are shown in Table 1. All
of the critical temperatures
listed are effective ambient
temperatures, which basical-
ly means the wind chill tem- Bulls with
perature is used if the cattle
are not sheltered. The critical
temperatures also take into
consideration the insulating POWER
ability of the cattle, as shown
by the change between a wet
and dry coat. Typical hair
depths are .1 inches for sum- PEDIGREE
mer and .3 to .5 inches for
winter.

Estimated Lower Critical & STYLE
Temperatures for Beef Cattle *
Haircoat Lower Critical
Description Temperature
Summer Coat 60 degrees F DOUBLE A LAND & CATTLE
or Wet
Bull and Commercial Female Sale
Dry Fall Coat 45 degrees F
Dry Winter 32 degrees F April 2, 2022 • 1 p.m. CST
Coat Three Cedars Event Center • Nevada, MO
Dry Heavy 19 degrees F
Winter Coat SELLING APPROXIMATLEY 60 HEAD
*From Browsen, R. & Ames D.
“Winter Stress in Beef Cattle” Cat- Age-Advantaged Red Angus Bulls • Yearling Red Angus Bulls
tle Producer’s Library. CL760. Select Group of Composite Bulls (Red Angus x Charolais)
Elite Open Commercial Red Angus Females
As you can see from the
table above, if we have a There is true herd sire potential in these bulls! They have the pedigrees and
choice, snow is preferred to the POWER to make great breeding pieces! They possess impressive phenotype
a cold rain. We lose what is and structural integrity backed by proven genetics! Buy with confidence!
called “air insulation” in cat-
tle that get wet versus those
that are out in the snow. The View and
air pockets between hair fi- Bid Online
bers are a source of insula-
tion. We lose this insulation
when hair gets matted down
in a cold rain. The result is
that the Dry Winter Coat RANCH LOCATION: NEVADA, MO
goes from having a critical
temperature of 32 degrees F DENNIS ALT - (913) 558-7966
to about 59-60 degrees F. COLE ABELE - (417) 684-0881
From several studies it is 22286 W. 74th St. | Shawnee, KS 66227
estimated that for every one dennis@abelealtcattle.com
degree below the critical tem- www.doublealandandcattle.com
perature a cow’s energy re- facebook.com/DoubleALandAndCattle
quirement (TDN) increases 1
percent. It is also estimated
that for every ten degrees