Title: Dairy update
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00087054/00015
 Material Information
Title: Dairy update
Series Title: Dairy update
Physical Description: Serial
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 2006
 Record Information
Bibliographic ID: UF00087054
Volume ID: VID00015
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.


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Department of Animal Sciences

Sairy Updat


Quarterly Newsletter Vol. 6 No. 1 Winter 2006


Louis E. "Red" Larson's longtime leadership in
Florida's dairy industry is being recognized by his four
children who are establishing three endowments at the
University of Florida's Institute of Food and Agricultural
Sciences. The $1.5 million gift, announced Nov. 5,
2005, at the College of Agricultural and Life Sciences'
annual "Tail Gator" rally prior to the Florida-Vanderbilt
football game in Gainesville, has prompted UF officials
to name a building in Larson's honor. UF's Dairy
Science building, part of the Department of Animal
Sciences, will now be known as the L.E. "Red" Larson
Dairy Science Building.
In announcing the endowments and building
dedication, Dr. Jimmy Cheek, UF senior vice president
for agriculture and natural resources, thanked the Larson
family for the generous gift and said it will enhance
teaching, research and extension programs in dairy
science and the 4-H Youth Development Program. "The
Larson children, with deep roots in Florida agriculture
and strong family ties, have chosen to honor their dad in
a very special way," Cheek said. "Red Larson and his
wife, Reda, are the proud parents of four children -
Woody, Barbara, Kathy and John who have chosen to
make a significant gift in their father's honor. Thanks to
their generosity, three separate endowments are being
established in UF's Institute of Food and Agricultural
A $300,000 gift will create an endowment to support
teaching, research and extension programs, and a
$200,000 gift will create an endowment to support UF's
statewide 4-H Youth Development Program. A $1
million gift will create an endowment to provide support
for the Faculty Challenge Initiative, which will provide
support for faculty and students in the Department of
Animal Sciences.
The initiative, which was announced last year by UF
President Bernie Machen, aims to raise $150 million to
meet the demands of educating Florida's growing
population and make UF one of the nation's premier
research universities.
Red Larson, owner and president of Larson Dairy
Inc. in Okeechobee has been a dairy farmer for more
than 57 years. His farm covers 10,000 acres and
includes more than 6,000 cows that produce 45,000

gallons of milk daily.
In October, Larson received the Southeast Farmer of
the Year Award at the annual Lancaster-Sunbelt Expo in
Moultrie, Ga. The southeast region includes farmers in
Alabama, Florida, Georgia, Mississippi, North Carolina,
South Carolina, Tennessee and Virginia. His other
honors include being elected to the Florida Agricultural
Hall of Fame, Dairy Hall of Fame and Alumni of
Distinction in UF's College of Agricultural and Life
Sciences, and being named Dairyman of the Century.

The faculty, staff, and students of the Department of
Animal Sciences are very excited about this endowment.
We thank the Larson family for this gift.


Dr. F. Glen Hembry announced on October 18,
2005, that his last day as chair of the Department of
Animal Sciences will be June 30, 2006. That date will
complete his 16th year as chair of first the Department of
Animal Science and later the Department of Animal
Sciences that was formed after the merger with the
Department of Dairy and Poultry Sciences in 2000. Dr.
Hembry plans to remain an active member of the faculty
with a focus on teaching and extension.
A Search and Screen Committee has been appointed
by UF senior vice president for agriculture and natural
resources Dr. Jimmy Cheek. The committee's
responsibility is to conduct a national search for

candidates and encourage their applications. Goal is to
have a new chair in place by July 1, 2006.


What: UF/IFAS Digester Field Day
When: 1 to 4 PM, Thursday, January 19, 2006
Where: Dairy Research Unit, Hague, FL. The DRU is
located just off CR 237.
Why: To learn about the technology and economic
feasibility of digesters on Florida dairy farms.
1:00 Welcome
1:05 Engineering aspects of digesters (Ann Wilkie,
Roger Nordstedt)
2:00 Tour of the DRU's fixed film digester and
manure handling system (Ann Wilkie, David
Armstrong, Roger Nordstedt)
3:00 Economic feasibility of digesters on dairy farms
(Russ Giesy, Albert de Vries)
4:00 Adjourn

Admission is free. For more information, contact Russ
Giesy at (352) 793-2728 or by email at giesyr@aol.com.


James Umphrey resigned his position as Assistant in
Animal Sciences on November 8, 2005. He indicated
his resignation was for personal reasons as he felt a need
to focus on his graduate program (which should be
completed in summer of 2006) and the desire to start
exploring new opportunities. James Umphrey has made
significant contributions over the past 17 years to dairy
programs; in particular the dairy youth and
undergraduate programs. James indicated that he had
the opportunity to work with some of the finest dairy
producers, 4-H parents, volunteers, agricultural teachers
and youth in the state. It is currently not clear how the
position will be filled.


Results of the 2005 corn silage and forage sorghum
variety tests are now available. To see the results, visit
www.animal.ufl.edu and click on "2006 Corn Silage
Field Day", then select 2005. Hybrid variety
'- yield and quality data is available for mid-
-' season and full season varieties. For more
information, contact Jerry Wasdin, email:
wasdin(@animal.ufl.edu or phone (352) 392-1120.

THURSDAY, MAY 26, 2006

The 2006 Corn Silage / Forage Field Day will be
held at the Plant Science and Education Unit, Citra,
Florida, on Thursday May 26. Contact Jerry Wasdin,
wasdin(@animal.ufl.edu, phone (352) 392-1120, for
more information or visit the UF/IFAS Dairy Extension
website at http://dairy.ifas.ufl.edu.


David R. Bray

The 45th Annual Meeting will be held on January 22-
25, 2006 at the Hyatt Regency Hotel in Tampa. This is
the second year in a row that it will be held in Florida. It
was supposed to be held in New Orleans, but I guess the
site there got flushed.
This year's program looks like the best one in years.
The program is broken into topics where there are two to
three papers per topic. The topics include: 1) mastitis
resistance, 2) treating subclinical mastitis, 3) animal
welfare considerations, 4) environmental management
(strep uberis, both in pastured and housed cows, and
alternative beddings), 5) machine milking and
management, 6) update on mycoplasma mastitis.
There are not a lot of data slides in many of these
talks which makes them easy to follow. Most
presentations are suited to dairymen.
NMC is an inexpensive organization to join and
most Florida dairymen should be members. All the folks
who are trying to sell you products attend; you should
Join NMC and attend the annual meeting. Let me
know if you want a brochure or more information. You
can contact NMC at (608) 848-4615, email them at
nmcinmconline.org or visit their website at
www.nmconline.org. Or call me at (352) 262-6586.

FEBRUARY 1-2, 2006

The 16th Florida Ruminant Nutrition Symposium
will be held on February 1-2, 2006 at the Best Western
Gateway Grand in Gainesville, Florida. The program
features 2 days of presentations. Presentations on
Wednesday February 1 (starting at 1:00 PM) are:
1) Strategic Manipulation of RDP and RUP Supply to
Meet the Protein Needs of Beef Cows Dr. Alfredo
DiCostanzo, University ofMinnesota, St. Paul, MN
2) Improving Nitrogen Utilization in the Rumen of the
Lactating Dairy Cow Dr. Glen Broderick, US.
Dairy Forage Research Center, Madison, WI

3) The Role of Amino Acid Nutrition in Milk Yield
and Milk Components Dr. Brian Bequette,
University of Maryland, College Park, MD
4) Milking Them for All They're Worth Dr. David
Zartman, The Ohio State University, Columbus, OH
5) Encapsulating Nutrients to Improve Nitrogen
Utilization and Reproduction Dr. Steven
Emanuele, Balchem Corporation, New Hampton, NY
6) A Factorial Approach to Energy Supplementation
for Grazing Beef Cattle Dr. Matt Hersom,
University ofFlorida, Gainesville, FL
Thursday February 2 program (starting at 8 AM):
1) Trace Mineral Nutrition and Immune Competence in
Cattle Dr. John A4, i ingti, ,i. University of Florida,
Range Cattle REC, Ona, FL
2) Nutritional and Metabolic Effects on the Immune
Competence of the Periparturient Cow Dr. Jesse
Goff National Animal Disease Center, Ames, IA
3) Uses and Abuses of Near Infrared Reflectance
Spectroscopy for Feed Analyses Dr. Dan
Undersander, University of Wisconsin, Madison, WI
4) Factors Affecting Corn Silage Quality in Hot and
Humid Climates Dr. Gbola Adesogan, University
ofFlorida, Gainesville, FL
5) Milk Fat Depression in Dairy Cows Influence of
Supplemental Fats Dr. ( h,,, /i Staples, University
ofFlorida, Gainesville, FL

Novus International will be holding a seminar on
Tuesday, January 31, 2006, one day prior to the Florida
Ruminant Nutrition Symposium, at the Best Western
Gateway Grand in Gainesville, FL. A lunch buffet will
be available prior to the seminar, with the speaker
session beginning at 1:00 PM. The seminar will feature
several well-known speakers from the industry, and is
open to anyone who would like to attend. Topics to be
covered include: 1) Antioxidant nutrition in dairy cattle,
2) Organic trace minerals for dairy cattle, and 3) amino
acid nutrition in dairy cattle.

For information about the symposium, contact
Charley Staples, phone (352) 392-1958, email:
staplesi@animal.ufl.edu or Adegbola Adesogan, phone
(352) 392-7527, email adesogani@animal.ufl.edu.
For registration information, contact
Tracy Nininger, UF/IFAS Office of Conferences &
Institutes (OCI), phone: (352) 392-5930, email:
Or visit the Symposium website with all the details
at http://conference.ifas.ufl.edu/ruminant/index.html.

FEBRUARY 28 March 7, 2006

The third Annual Florida Dairy Road Show will be
held in Florida in the week of February 28-March 3,
2006. Previous programs have been well received and
attracted over 90 participants in 2004 and 2005, but lack

of interest in Ocala forced us to look for an alternative
location. The program will also be held on March 7,
2006, in Tifton GA in cooperation with the University of
Georgia. The 2006 Dairy Road Show will focus again
on practical cow management.



Welcome A
Nutritional management of the transition period
to optimize fertility in dairy cattle
Dr. Pedro Melendez

10:50 How to reduce mastitis and somatic cell counts
in your dairy herd
Mr. David Bray & Mr. Brent Broaddus
11:30 New features in PCDART to schedule
Dr. Dan Webb & Mr. Ray West


Lunch, sponsored by Pfizer
Developing quality dairy replacement heifers
Dr. John Bernard

1:35 Euthanasia and carcass disposal
Dr. Jan /i 1,,,1 (only in Florida)
or Monitoring health and looking for sick cows
Dr. Carlos Risco (only in Georgia)
2:20 Ranking dairy cows for future profitability and
culling decisions
Dr. Albert de Vries
2:50 Managing risks associated with cow
Dr. Bradley Mills (Pfizer Animal Health)
3:10 Adjourn

Locations and Times
Tuesday, February 28, 2006, 10 AM
Okeechobee County Extension Office
458 Highway 98 N, Okeechobee, FL
Local contact: Pat Miller, (863) 763-6469

Wednesday, March 1, 2006, 10 AM
Lafayette County Extension Office
Route 3 Box 15, Mayo, FL
Local contact: Chris Vann, (386) 294-1279

Friday, March 3, 2006, 10 AM
Washington County Extension Office
1424 Jackson Avenue, Chipley, FL
Local contact: Andy Andreasen, (850) 638-6180

Tuesday, March 7, 2006, 10 AM
UGA Tifton Campus Conference Center at the Rural
Development Center
15 RDC Road, Tifton, GA 31794
Local contact: John Bernard, (229) 391-6856

Registration received on or before February 20, 2006 is
$10 per person. Registration at the door is $20 per
person. The registration fee covers organization of the
program, refreshments, and includes one copy of the
proceedings. Lunch is provided free, courtesy of Pfizer
Animal Health.
You can directly contact one of the organizing
extension agents or organizers to register. Registration
forms can be also be downloaded from
http://dairy.ifas.ufl.edu and mailed to Brent Broaddus.

Organization / More Information
Brent Broaddus, UF/IFAS Dairy Extension
5339 County Road 579, Seffner, FL 33584
Phone (813) 744-5519 ext. 132; Fax (813) 744-5776
Albert de Vries, UF/IFAS Dept. of Animal Sciences
Building 459, Shealy Drive, Gainesville, FL 32611
Phone (352) 392-7563; Fax (352) 392-7652
John Bernard, Dept. of Animal & Dairy Science
University of Georgia, Coastal Plain Experiment Station
PO Box 748, Tifton, GA 31793
Phone (229) 391-6856


A.T. Adesogan, D. B. Dean and C.R. Staples

This Milk Check-Off funded project was designed to
investigate whether fibrolytic (fiber-digesting) enzymes
can be used to improve the performance of dairy cows
fed bermudagrass silage. An enzyme (Promote ;
Cargill; Minnetonka, MN) that had enhanced milk
production from cows fed corn silage-based diets in
other studies was used. This enzyme was also better
than three other enzymes at improving the fermentation
and digestibility of bermudagrass silage in our previous
mini silo studies.
A ration consisting of a five-week regrowth of
Tifton 85 bermudagrass silage, corn silage, and
concentrate (35, 10 and 55% DM basis respectively) was
fed to thirty Holstein cows (129 days in milk) for two 28
day periods. The following treatments were examined:
1) Control (no enzyme addition);
2) Enzyme applied to the concentrate at feeding (EC);
3) Enzyme applied to the total mixed ration at feeding
4) Enzyme applied to bermudagrass silage at feeding

5) Enzyme applied to bermudagrass at ensiling (TS).

The enzyme application rate at feeding was 4 g
enzyme/cow per day and 0.13% of forage dry matter at
ensiling. Voluntary dry matter intake and digestibility of
dry matter, crude protein, and neutral detergent fiber
(total fiber) were unaffected by treatment. Therefore
milk production and blood glucose
levels were also unaffected.
However, Cows fed the ETMR diet
tended to have greater milk fat and
milk protein concentrations and had
lower blood P-hydroxybutyrate
concentrations than cows fed the
SotheastM control diet. This implies that the
Dairy Check4Of ETMR treatment reduced back fat
mobilization and therefore
improved energy balance. In addition, cows fed the
ETMR treatment had lower ruminal acetate to
propionate ratios, lower ruminal ammonia-N
concentrations and tended to have lower blood urea-N
concentrations than cows fed the control diet. These
results indicate that feeding the ETMR diet instead of
the Control diet improved the efficiency of rumen
fermentation and nitrogen utilization. However, these
benefits were not great enough to result in improved
feed intake, digestibility or milk production in the cows.
Therefore this study suggests that the performance of
cows in mid-lactation that are fed bermudagrass silage-
based diets will not be improved by enzyme addition.
Future work should determine the merits of feeding
the ETMR diet in early lactation when performance
responses to moderate improvements in energy balance
and rumen function are more likely.
For more information, contact Adegbola Adesogan,
phone (352) 392-7527, email adesogani@animal.ufl.edu.


The 43rd annual Florida Dairy Production
Conference will be held at the UF Hotel and Conference
Center in Gainesville, Florida, on Tuesday, May 2, 2006.
Nationally known speakers from across the U.S. are
confirmed to discuss the future of dairy production in the
Southeast, economics of sexed semen for Florida dairy
farms, optimal breeding decisions, update on RFID for
dairy management, and making quality silage in the
Southeast. The final program will be announced later in
January. Keep an eye on the UF/IFAS Dairy Extension
website http://dairy.ifas.ufl.edu. For more information,
contact Albert de Vries, phone (352) 392-7563 or email

The Florida Dairy Update newsletter is published quarterly by the University of Florida, Department of Animal Sciences, as an educational and informational service.
Please address any questions comments or suggestions to Albert de Vries, Editor, Dairy Update, PO Box 110910, Gainesville, FL 32611-0910.
Phone: (352)392-7563. E-mail: devries@animal.ufl.edu. UF/IFAS Dairy Extension website: http://dairv.ifas.ufl.edu. This issue was printed on January 3, 2006.

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