J. LEE MAJESKIE
Extension Dairy Specialist
Dept. Animal Sciences
University of Maryland
COLLEGE PARK. Md. The
DHI system provides dairy pro
ducers with valuable information.
Not only are production data
provided on individual cows, but
important herd data helps produc
ers cffcicnily manage their dairy
herd. These data are also useful
tools for the extension dairy spe
cialist, veterinarian, feed consul
tant and other people who may be
involved in helping dairy produc
ers to efficiently "use the dairy
records.
Most DHI processing centers
provide detailed management data
on the herd.
Recently, DHI-Provo deve
loped the “Personal Herd Profile"
report that allows dairy producers
to develop and customize a special
report from the data listed on the
monthly DHI herd summary.
On the Personal Herd Profile,
key management statistics can be
grouped into a short, concise
report, making it easy to compare
statistics that each dairy producers
Teels arc vital for efficient manage
ment oT his or her herd.
A detailed report, listing numer
ous items from the monthly herd
summary, or a simple report, with
only a few selected items, can be
designed.
In the example given (see
accompanying table), four major
areas selected were production
traits (milk, fat, protein), udder
health (somatic cell count data),
reproductive performance, and
genetic evaluation (cows, sires and
service sires).
The dairy producer can select
the data for each item by lactation
group (first lactation, second lacta
tion, and third lactation or more),
or a herd average for each item.
Many times it is important to
identify the lactation group where
a problem exists.
A dairy farmer can compare
information from his/her herd
summary to up-to-date area aver
ages by county, state and region, as
well as production groups within
the region. This allows producers
to quickly compare herd informa
tion with area averages on one
easy-to-read page designed by
them.
DHI-Provo
There are also statistical evalua
tions given to help dairy producers
to interpret the information on the
report.
As shown in the example, the
gray area in the center of the Per
sonal Herd Profile includes the
present data for the herd. To the
right of the herd data are listed the
percentiles for each item. The per
centile provides a ranking of all.
herds within a set grouping (i.e.
herd breed) from high to low.
Thus, the highest value would
receive a percentile ranking of
100, while the lowest value would
receive a percentile ranking of 1.
If a herd is ranked in the 64th
percentile, then 64 percent of the
herds have a value less or equal to
the herd’s value and 36 percent
have a value greater than the herd’s
value.
The desirability of an item rank
ing over another is based on the
individual herd summary trait
(item) selected.
For example, a high percentile
ranking would be desirable for the
comparison of pounds of milk or
percent protein, while a low per
centile would be desirable for a
trait such as cows with high soma
tic cell score, or services per
conception.
To the left of the herd data, a
dairy producer can list goals that
he or she would like to see attained
for the herd. The goals are reported
next to the herd summary item on
the report. DHI-Provo will then
generate a report with the specified
goal for each of the items. These
goals can be changed at any time
once the situation has been
evaluated.
For the herd reported in Table 1,
a herd goal of 22,000 pdunds of
milk has been Isited. Since the herd
already averages 21,089 pounds of
milk, this goal should be easily
attainable.
Each of the items under the
major categories can be evaluated
to see where strengths occur and
identify weaknesses that must be
improved to reach the 22,000
pound goal. In the columns on the
right side of the repfort, listed as
“East Holstein,” there are four pro
duction groups reported.
Within each region of the coun
try, the herds processed by the
DHI-Provo are classified into four
production groups within each
Develops Custom Reports
breed, using the rolling herd aver
age for milk production. It is easy
to distinguish what factors are cor
related with high production when
comparing the high and low pro
ducing herd'groups.
In quickly analyzing the herd in
the four major areas, the second
lactation group' average of SS.9
pounds of milk ranks diem in the
PP PERSONAL HERO PROFILE
- MF I RSt NOCSYTTn
NCRO MUD or 070 OCV PRODUCT 100 OROUPt
mo pmouptiom county otaw rioioo opals rata pctl var pit pert oroup i oroup » oromp 2 droop o
OUMOCR or HCR9S 101 Ml DM HI U) 247 Hi
1
invantaryt
i 101 CWI in NorO OT TO 10 1)7 07 00 02 79 *0 1
110 Caw* in Milk 71 00 07 110.07 70 71 00 >1
PraOuatian:
710 RMA PawnU* mu 10021 10027 10101 21009 00 21070 19200 1770) 1921)
112 1 100 Ml Ik (N)lklno) 00.0 00.0 02.2 07.7 00 21 12.0 00 07.0 01.9 09.2 02.7
112 2 Lift Milk (Nilhlnt) 00.0 00.2 09.1 * 00.9 00 20 10.9 27 00.0 09.1 00.1 00.0
112) LOO Milk (Nilhlnt) 0* 0 97 9 00.0 72.0 9) 20 17.9 27 07.7 09.0 07 2 09.)
112 LOS Nilk (Milking) 00.7 00.9 07.2 02.2 79 27 10.0 02 02.0 07.9 9) 0 00 4
[too (fit (AM) 2.091 2.02} 2.92 g 2.oft 20 14 .01 00 ).91g 2.9)1 3.9*1 ).40S
i 197 g Prntnin (AM) 2.17 S 2.29 g 2.10 g 2.22 X 90 9 .20 IT 2.17 g 2.10 g 2.10 g 2.205
Ipaak PraOwatlon; j
220 1 Path $ Nilk <9O DIM 00.0 40.2 79.1 fTl t f. T* 1* 9 1 OO 74.0 49.0 44.7 40 1
220 2 Pn«fc fMlIk < 90 OIN 02.0 00.0 00.0 91.01 TO 10 D.l 97 97 2 00.2 0) 2 7)2
220 2 Pnak f Nllk <99 OIN 09.2 09.7 92.0 Vft*& I* 14 14 0 7) 192.7 92.9 00 0 70 2
! 224 1 Days Paakad 7) 74 77 72 fOO 00 2) Of 79 70 74 7*
220 2 Hyi Paakai 07 07 07 »«' OO 90 20 00 97 94 97 9a
| 220 2 Raya PnafcnO 40 09 99 00. 01 04 29 20 00 99 54 97
Emrapaiatad 209 Natwrn t|ul«, >
'2OO 1 Kxt 200 HE Milk 20027 209)9 210)9 22971 09 It 2407 02 2)209 20029 19417 17)29
200 2 Cnt 209 NC Milk 209)9 2074) 219)9 22090 02 10 2204 42 2*027 21207 20019 17)01
200 2 Cm 209 ME Milk 19720 1907) 20027 j 2201) 02 12 2007 )9 22017 20021 1921) 140)a
Saaalia Cnlla: i
200 1 g Caw* Law SCO (9*o) 79g 7ft oig ! 92| 00 OOg 01g OOg 775
| 20* 2 s Cwi Lltf SCI 14-01 7)g 72g 74g 9)g 01 79g 79X 701 70S
j 20* Ig Cm Law SCS (0-0) 09X 99g 42g j OZg 92 44g 42g 41| 9*5
f 209 1 gCm Na« ICO (0-4) US US US! OS 20 US US US US
209 2 g Cm* Mad 2C4 (9-41 I 20g 20S US | 1 7g 20 US US US
209 ) g Caw* Na 4 SC) (9-41 20S 20S 29g J US D 3)S 29S 24S )0j
Day* in~Milk: .
114 Day* in Milk 19* 194 190 209 7) 94 114 91 199 194 19* 20*
10) S o*y» in Nilk 00 4S 0* OS 09.9 S 40.9 X 90 44 OS 04 9S 49 22 40 4S
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48th percentile. This would indi
cate that there were S 2 percent of
the Holstein herds in Maryland
that have second lactation cows
averaging more milk than 55.9
pounds.
The first lactation group of cows
are in the 85 percentile and the
third lactation group is in the 93
percentile. There appears to be
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1202
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some problem that is preventing
the second lactation cows from
reaching higher production Icvesl.
In evaluating the peak produc
tion for each of the lactation
groups, it appears that this level
will have to be raised slightly for
each group in order to reach the
22,000 pounds herd average goal.
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