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Cook Station, Crawford County
Field Day
* Was held on October 2, 2009.
FFA/Science/
Career Field Day
* Was held on October 1, 2009.
2009 Beef Tour
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Superintendent:
John Poehlmann
2-44 Ag Building
Columbia, MO 65211
Phone: 573-882-4450
Email:
PoehlmannJ@missouri.edu
Farm Manager:
Brent Booker
Phone: 573-743-6612
Email:
WurdackFarm@missouri.edu
Donna Marie Thomas
MU AES Field Operations
2-21 Ag Building
University of Missouri-Columbia
Columbia, MO 65211
573-882-4450
Email:
ThomasDM@missouri.edu
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The Effects of Cydectin, Eprinix, and the Ivomec Bolus
On Average Daily Gain in Spring Beef Calves in 1998
By Gary Applegate, Extension Livestock Specialist
In July of 1998 46-spring calves (25 steers and 21 heifers) were randomly
placed in on of four treatment groups to study the effects of three
different de-worming products. The products used were Cydectin, Eprinix,
and the Ivomec Bolus.
Six steers and five heifers were randomly placed in each treatment group
except the Ivomec Bolus group which had seven steers and six heifers. A
control group in which the calves did not receive any de-wormer was also
used in the study. All of the calves were suckling their dams and were
treated equally in all other management considerations.
The steers in the study averaged 377 pounds on July 28th when the study
began, while the heifers averaged 329 pounds. The calves were reweighed on
September 16th, when the calves were weaned, October 23rd and again on
October 29th when some of the calves were sold.
The steers in the control group had an average daily gain of 2.28 pounds
during the 93 day study while the heifers gained 2.27 pounds daily. The
steers in the Cydectin group had an average daily gain of 2.46 pounds while
the heifers gained 2.32 pounds per day. The steers in the Eprinix group had
an average daily gain of 2.31 pounds while the heifers gained 2.53 pounds
per day. The steers in the Ivomec Bolus group had an average daily gain of
2.40 pounds while the heifers gained 2.22 pounds per day. See table one.
Table One: Average Daily Gain For All Calves (pounds)
Steers Heifers
Control 2.28 2.27
Cydectin 2.46 2.32
Eprinix 2.31 2.53
Ivomec Bolus 2.40 2.22
These data suggest that there was no difference between any of the
treatments and the control group. The small differences that were seen were
inconsistent between steers and heifers and were only nominal. These data
also suggest that the calves in this study did not appear to have a
significant parasite problem.
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