Title: Dairy update
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Title: Dairy update
Series Title: Dairy update
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Language: English
Creator: Institute of Food and Agricultural Science
Publisher: University of Florida Institute of Food and Agricultural Science
Place of Publication: Gainesville, Fla.
Publication Date: Winter 2007
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Volume ID: VID00019
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UF FLORIDA
Institute of Food and Agricultural Sciences (IFAS)
Department of Animal Sciences


airy Update


Quarterly Newsletter Vol. 7 No. 1 Winter 2007


NEW YEARS RESOLUTIONS III

David R. Bray

Happy New Year to you all! It's time again to plan
for a successful new year on your dairy, which means we
should repeat the successful things we did last year and
not repeat last year's screw-ups. This time of year is a
good time for planning, not only for this year but for the
future. This means how do we continue to improve the
things we do well and what do we change or eliminate
that we don't do well. If you don't know what these are,
sell out. Here are 13 New Year's resolutions:

1- Have a business plan. If you don't have one, get
one. Dr. De Vries, or that Giesy guy or Dr. Ely in
Georgia or your County Extension Agent can set
you up.
2- Set goals for all the enterprises or areas of your
dairy. These should have employee inputs also as
this is the road map for success. These goals will
then set the goals for your employees to strive to
make the whole dairy's performance and safety
improve.
3- These performance goals then are translated to
employee job descriptions and compensation for
their part of meeting the dairy's goals; these are
explained at the employee performance review.
4- Implement some sort of employee training program
to insure they understand their responsibilities in this
quest for excellence.
5- Do only what you can do well. If you can't raise
calves, use a calf raiser or buy replacements. If you
can't grow crops, buy them or have them custom
grown and or harvested.
6- Go visit other dairies in the Southeast. You see
these people at SMI meeting. See what other people
are doing. Some of the most innovative dairymen in
the world live here. Go elsewhere in the country and
see what's new there. This can help in the future
planning process.
7- Replace outdated, worn out milking equipment. It's
hard to preach great milking practices when nothing
works half of the time.
8- Milk clean dry udders and post-dip.
9- Keep cows as clean, cool and comfortable as
possible.


10- If your help can't walk and chew gum at the same
time, have them chew tobacco; it's easier to
swallow.
11- Hire help with more teeth than tattoos.
12- If you get out of breath tying your shoes, loose
weight or wear boots.
13- Keep a smile on your face, people will wonder what
you are up to.

STAY-GREEN RANKING EFFECTS ON CORN
SILAGE QUALITY AND MILK PRODUCTION

A. T. Adesogan, K. Arriola, and C.R. Staples

Due to producer concerns about a possible link
between corn silage stay-green (SG) ranking, poor silage
quality and Hemorrhagic bowel syndrome in dairy cows,
we conducted two Check-Off funded experiments to
determine when to harvest corn
hybrids with high SG rankings, and
how SG ranking affects nutritive
value, silage fermentation and milk
production by dairy cows. In the
first experiment, two high SG
hybrids (Pioneer 31Y43 and
Croplan Genetics 827) were sIthbet Mi Uk, Ic.
compared against two average SG Dairy CheekOff
hybrids (Pioneer 32D99 and
Croplan Genetics 799) and the results were previously
summarized in this newsletter. The conclusions were as
follows: 1) High SG corn hybrids should be harvested at
about 34% DM to optimize nutritive value and yield; 2)
SG ranking did not affect silage fermentation or aerobic
stability; 3) Higher SG rankings were associated with
lower DM and sugar concentrations and were less
digestible.
Further analysis has revealed that some of the effects
of SG ranking on nutritive value were affected by hybrid
source. Though stover DM and whole-plant sugar
concentrations were lower in hybrids with higher SG
rankings from both companies, the Pioneer high SG
hybrid had greater ear and whole plant DM than their
average SG hybrid. However, unlike Pioneer hybrids,
the Croplan Genetics high SG hybrid had greater fiber
concentration and lower in vitro digestibility in the
unensiled whole-plant, in the stover, and in the silage
than their average SG hybrid. This indicates that among
the hybrids tested, lower nutritive value was associated





with the high SG hybrid from Croplan Genetics but not
Pioneer.
Experiment 2 determined the effect of SG ranking
and maturity of corn hybrids and simulated rainfall on
the health, feed intake and milk production of dairy
cows. Two corn hybrids with high (Croplan Genetics
691) or low (Croplan Genetics 737, LSG) SG rankings
were harvested at 26% (Maturity 1) or 35 %DM
(Maturity 2) and ensiled. A further treatment involved
addition of water to the high SG, Maturity 1 hybrid
during packing to simulate rainfall. Each of the resulting
silages was fed as part of a total mixed ration to 30
Holstein cows in two periods. Harvesting corn silage at
35% instead of 26% DM decreased intakes of CP and
NDF, digestibility of NDF and starch, and milk yield,
but increased the efficiency of feed utilization for milk
production. This suggests that corn silage should be
harvested at about 35% DM to enhance the efficiency of
milk production. Corn hybrids with high SG rankings
did not affect silage fermentation, milk production,
incidence of digestive upsets or counts of organisms
thought to cause Hemorrhagic bowel syndrome
(Aspergillus fumigatus and Clostridium perfringes).
However, higher SG rankings resulted in lower nutrient
intake and digestibility, and led to higher, though
physiologically normal, rectal temperature and higher
blood concentrations of an inflammatory stress index.
Simulated rainfall at harvest increased yeast and mold
counts and decreased aerobic stability. In conclusion, no
link between the incidence of hemorrhagic bowel
syndrome and corn silage SG ranking was found in this
study. For more information, contact Dr. Adegbola
Adesogan by email at adesogan@ufl.edu, or (352) 392-
7527.

FIRST SOUTHERN REGIONAL DAIRY
CHALLENGE A GREAT SUCCESS

Albert De Vries

On November 19-21, 2006, 41 students from nine
southern colleges and universities participated in the first
annual Southern Regional Dairy Challenge held at the
Hotel Roanoke & Conference Center in Roanoke, VA.
Program chairman Dave Winston from Virginia Tech
welcomed students from Alabama A & M University,
Clemson University, University of Georgia, Ferrum
College, Louisiana State University, North Carolina
State University, Virginia Tech, Western Kentucky
University and the University of Florida. The four
University of Florida students were coached by Albert
De Vries who also serves as the Southern Dairy
Challenge committee chairman.
The Southern Regional Dairy Challenge is an
innovative three-day event designed by industry and
university professionals to strengthen the Southern dairy
industry's future. Working in mixed-university teams of
five students, contestants assessed all aspects of a
working dairy farm and presented recommendations for


improvement to a panel of judges and the participating
farm family. The host farm was L.R. Hammock and
Sons in Chatham, VA.
Students arrived at the Hotel Roanoke & Conference
Center on the afternoon of Nov. 19. After check-in and
registration, participants were split into mixed-university
teams. The composite team approach provided a unique
opportunity for students to build team skills as well as
learn more about dairy programs at other universities.
At the end of the evening, teams received detailed
production, financial, nutrition and reproduction records,
and began brainstorming in preparation of their farm
visit.
The next morning, teams traveled to the host farm to
evaluate cows, facilities and management practices.
After a two-hour farm visit, teams returned to the hotel
to analyze their data and develop recommendations for
improvement. Each team prepared a 20-minute
presentation that detailed their observations and
suggestions.
NORTH AMERICAN INTERCOLLEGIATE


DAiRV ChAI ENGE

SOUTHERN REGIONAL
On the program's final day, each team presented
their evaluation and recommendations to a panel of
industry judges. Teams were ranked as platinum, gold
or silver based on how well their evaluations matched
the judges' evaluations of the dairy operation. The
Dairy Challenge ended with dinner and an awards
ceremony.
Dave Winston stated, "It's amazing what the
students accomplished in a short time period. They built
a team from scratch, analyzed the dairy farm from
multiple perspectives, and made outstanding
presentations to our judges to report their findings. The
skills they learned through their participation in the
Dairy Challenge will help them significantly as they
prepare for their careers."
A major sponsor was Florida-based Dairy
Production Systems in High Springs. Other Florida-
based sponsors were Southeast DHIA and Southeast
Milk, Inc. Many other sponsors in the South and
nationally contributed to the event. In addition,
Southeast Milk, Inc. awarded lifetime memberships in
the National Dairy Shrine to all participants in the 2006
contest. National Dairy Shrine preserves the heritage of
the dairy industry and provides awards and scholarships
for a bright future for the dairy industry.
Louisiana State University will host the second
Southern Regional Dairy Challenge on Nov. 15-17,
2007. If you have questions about the Southern contest,
contact Gary Hay at ghavagactr.lsu.edu or Albert De
Vries at devries@ufl.edu. The Southern Regional Dairy
Challenge is under the guidance and support of the
North American Intercollegiate Dairy Challenge, which





was established in April 2002, as a management contest
to incorporate evaluation of all aspects of a specific dairy
business. For more information, call (217) 485-3441 or
visit http://www.dairychallenge.org.

18th FLORIDA RUMINANT NUTRITION
SYMPOSIUM: JANUARY 30-31, 2007

The 18th Annual Meeting of the Florida Ruminant
Nutrition Symposium will be held Tuesday, January 30 -
Wednesday, January 31, 2007 at the Best Western
Gateway Grand Hotel located at 4200 NW 97th Blvd. in
Gainesville, Florida (1-75 exit 389). Program:


AM
9:30
11:45
PM
1:00
1:05


Tuesday, January 30, 2007
Registration starts
Buffet Lunch

Welcome & Introductions
Dietary Energy Density for the Close-Up Dry Cow
- Postpartum Performance Dr. Gabriella Varga,
The Pennsylvania State University, College Park


1:45 Ruminal Acidosis in Dairy Cows: Balancing
Physically Effective Fiber With Starch Availability
Dr. Karen Beauchemin, Agriculture and Agri-Food
Canada, Research Centre, Lethbridge, Alberta
2:25 Nutritional Strategies to Enhance Immunity
During the Transition Period of Dairy Cows -- Dr.
Matt Waldron, University of Vermont, Burlington
3:05 Refreshment Break
3:35 Vitamins and Minerals Functioning as
Antioxidants with Supplementation
Considerations Dr. Lee McDowell, University of
Florida, Gainesville
4:15 Effect of Selenium Source on Production,
Reproduction, and Immunity of Lactating Dairy
Cows Dr. William Thatcher, University of Florida,
Gainesville
4:55 Effects of Pre-shipping Management on the
Performance of Florida Beef Calves in the
Receiving Feedlot Dr. John Arthington, University
of Florida, Range Cattle REC, Ona
5:30 Welcome Reception

AM Wednesday, January 31, 2007
7:30 Morning Refreshments
8:00 Strategic Addition of Dietary Fibrolytic Enzymes
for Improved Performance of Lactating Dairy
Cows Dr. Gbola Adesogan, University of Florida,
Gainesville
8:40 Use of Milk or Blood Urea Nitrogen to Identify
Feed Management Inefficiencies and Estimate
Nitrogen Excretion by Dairy Cattle and Other
Animals Dr. Rick Kohn, University of Maryland,
College Park


9:20 Strategies, Benefits, and Challenges of Feeding
Ethanol Byproducts to Dairy and Beef Cattle Dr.
David Schingoethe, South Dakota State University,
Brookings
10:00 Refreshment Break
10:40 Nutrition and Management During Gestation:
Impacts on Lifelong Performance Dr. Joel Caton,
North Dakota State University, Fargo
11:20 Do Grazing Beef Cows Benefit From Supplemental
Anionic Salts? Dr. Matt Hersom, University of
Florida, Gainesville
12:00 Adjourn

Registration: Visit the symposium website at
http://conference.ifas.ufl.edu/ruminant/. You may also
register by phone by calling the UF/IFAS Office of
Conferences and Institutes at (352) 392-5930. The
Onsite Registration Desk at the Symposium will be open
from 9:30am 5:00pm on Tuesday, January 30th.
Lodging: Contact the Best Western Gateway Grand
Hotel directly at 1-877-464-2378 and be sure to specify
you are attending the Ruminant Nutrition Symposium.
For a detailed symposium program or sponsor
information, please contact the symposium organizers,
Dr. Charles Staples at chasstap(@ufl.edu or Dr. Adegbola
Adesogan at adesogan@ufl.edu.

E-LEARNING: SEE AND LISTEN TO THE 3rd
DAIRY ROAD SHOW PRESENTATIONS ON
YOUR COMPUTER

Albert De Vries and Brent Broaddus

In case you missed it, or want to listen again, you
can now hear and see six of the presentations given
during the 3rd Florida and Georgia Dairy Road Show in
2006 right from behind your computer with fast internet
access. Using rapid e-
learning software, the -.,]






internet browsers support.
Simply visit the Dairy Road Show website at
http://dair.ifas.ufl.edu/drs and click on Listen.
The six presentations are: Management of transition
dairy cows to improve reproductive efficiency (Pedro
Melendez); Mastitis control (David Bray); How to
reduce mastitis and somatic cell counts in your dairy
herd with DairyMetrics and custom PCDART reports
(Brent Broaddus); PCDART protocol system (Dan
Webb); Developing quality dairy replacement heifers
(John Bernard), and Ranking dairy cows for future
profitability and culling decisions (Albert De Vries).





2006 CORN SILAGE HYBRID PERFORMANCE
TRIAL RESULTS

Results of the corn silage hybrid performance trials
in 2006 at the Plant Science Unit in Citra, Florida, are
now available on the Florida Dairy Extension website
http://dairy.ifas.ufl.edu. For further information, contact
Jerry Wasdin (352-392-1120; jwasdini@animal.ufl.edu),
Charles Staples (352-392-1958;
staplesi@animal.ufl.edu), or Adegbola Adesogan, (352-
392-7527; adesogani@ufl.edu).

33rd ANNUAL SOUTHERN DAIRY CONFERENCE

The 33rd annual Southern Dairy Conference will be
held at the Westin Atlanta Airport Hotel, Atlanta, GA,
on January 30 February 1. This program is planned
and presented to focus on issues and opportunities
affecting the entire dairy industry of the Southern United
States. The conference is sponsored by the Southern
Land Grant Universities, including the University of
Florida. For more information, contact Dan Webb at
(352) 392-5592 or dwwebb(@ufl.edu.


AM
7:30
8:00
9:15


Wednesday, January 31, 2007
Continental breakfast
Registration
Welcome


9:30 National Dairy Situation and Outlook Ken Bailey,
Penn State University
10:15 Trade, Farm Bill and Dairy Policy
Developments Scott Brown, University of Missouri
11:00 Energy Outlook/Ethanol & Biodiesel
Production Matt Roberts, Ohio State University
11:30 Ethanol & Biofuel Production: Impacts on
Dairy & Feed Costs David Anderson, Texas A&M
University


PM
12:00


Lunch


1:15 SUDIA Update Cheryl Hayn, SUDIA General
Manager
1:35 Overview of U.S. Dairy Products Trade:
Impact on U.S. Dairy Prices Ken Bailey, Penn
State University
2:05 State Dairy Incentives/Legislation and
Program Overview Hal Harris, Clemson University
2:45 Break
3:15 Successful Dairying in the Southeast: A Dairy
Producer Panel David Sumrall, large MS dairy
producer; Will Maloney, dairy producer in TN; Al
Wehner, GA pasture based/value added dairy
producer; Kerry Chestnut, NZ Dairy Group in GA


4:30 Panel Discussion: Developing Successful
Dairies in the South Moderator: Steve Nickerson
5:00 Adjourn


AM
7:00
8:15


Thursday, February 1, 2007
Continental breakfast
New Zealand Dairy Farm Expansion in the
U.S.: Why Southern Missouri? Kyle Bounous,
Dairy Farmers of America, field representative;
Charles Fletcher, MO dairy producer


8:45 Update on the Status of the EPA Air Quality
Study Jim Tillison, NMPF
9:15 Crossbreeding Dairy Cattle: Impact on Milk
Volumes & Components Bennet Cassell, Virginia
Tech University
9:35 New Opportunities for Managing Heat Stress:
Impact on Milk Volumes & Components
Joe West, University of Georgia


10:00
10:30


Break
Visions for the Future of the Southeast Dairy
Industry Rick Smith, CEO of Dairy Farmers of
America


11:30 Discussion and Wrap Up...Evaluation Jodie
Pennington, University of Arkansas
12:00 Adjourn

Registration: for on-line registrations (credit card
only) visit http://www.pware.com/2532. A mail-in
registration form can be found at http://dairv.ifas.ufl.edu
(click on Southern Dairy Conference). On-site
registration at the conference will be held adjacent to the
meeting room. For lodging reservations at the Westin
Atlanta Airport Hotel, you may call 1-888-627-7211.
The Westin Atlanta Airport Hotel is located at 4736 Best
Road, Atlanta, GA.

OTHER 2007 DAIRY MEETINGS

A Spanish language Master Hoof Care technician
training program will be held in Gainesville on January
29-31, 2007. For more information, contact Jan or
Leslie Shearer at iks@ufl.edu, (352) 392-4700 ext. 4112
or visit http://lacs.vetmed.ufl.edu/MasterHoofCare.
The 4th Dairy Road Show is planned to be held in
the Fall of 2007. This is a change from previous years
when the Dairy Road Show was held in February and
March.
The 44th Florida Dairy Production Conference is
scheduled for Tuesday, May 1st, 2007 in Gainesville.
For more information, contact Albert De Vries,
devries(@ufl.edu, (352) 392-7563.


Dairy Update is published quarterly by the Department of Animal Sciences, University of Florida, as an educational and informational service. Please address any
questions or comments to Albert De Vries, Editor, Dairy Update, PO Box 110910, Gainesville, FL 32611-0910. Phone: (352) 392-7563. E-mail: devries@ufl.edu.
Past issues are posted on the UF/IFAS Florida Dairy Extension website: http:/dairv.ifas.ufl.edu. This issue was published on January 8, 2007.




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