BY , ...
GEORGE F.W. HAENLEIN
Extension Dairy Specialist
University of Delaware
NEWARK. DE—Over the last
few decades, great emphasis has
been placed on better dairy .herd
health programs and improved
genetics. Thanks to A.I. and
DHIA, dairy cows in many coun
tries, especially in the United
States, have had phenomenal suc
cess stories in genetics. Records
that I have kept on Delaware dairy
herds, in addition to our Universi
ty of Delaware herd, indicate an
almost 100% improvement in
milk production per cow per year
since 1959, from 9,400 pounds to
18,100 pounds in 1989, with the
fat test changing only slightly
from 3.9% to 3.7%.
Herd health also greatly bene
fitted from the introduction of
A. 1., by eliminating, to a large
extent, many costly reproductive
diseases that used to plague dairy
cows and were transmitted from
cow to cow by natural service
OVER 100 HOUSES SOLD IN THE PAST
FOUR YEARS IN THE NORTHEAST!
Chore-Time's ULTRAFLOt feeder
for layers, pullets and breeders
can free you from your chains
We have probably been too modest up to now about the merits of our new generation
ULTRAFLO® cage feeder vs. the old style chain feeders some of our competitors are
still trying to sell you. In fact, the only negative comments about our feeder come from
our competition, not our customers. So we would like to point out the bare facts:
FEED SAVINGS; On-farm result! show a feed savings of Vi
lb. per 100 birth per day - over $lO,OOO per year savings
on a 100,000-bird house. Year after year.
/*'
¥
EASY ADAPTABILITY: Ours adapts nslly to
existing cage systems you may already have. Or
choose bom our wide selection of cage styles.
5-YEAR WARRANTY: Our* give* you a
5-year warranty on auger and trough. Their*
doean’t In fact, their dealer* derive a large
percentage of their income from part* *ale«. ’’J!
Our* don’t.
MICROPROCESSOR CONTROL:
Out control let* you program feeding
time to the second, to match the
exact time of one circuit. Control
number of feeding*, time of each
feeding - also 10-second “Stimula
tion Cycles" between feedings, to
minimise separation, and Improve
your birds' feed Intake.
SIMPLE OPERATION:
“Push-pull" Power Units
with VS or Vi HP motor are
located in a cage, have
hardened steel gears for
trouble-free operation.
Watering From
agn
systems
Northeast
DHIA, IA Contribute To Dairy Genetics
bulls. The fight against mastitis
also has benefited greatly from
DHIA adopting somatic cell
count testing as a routine part of a
monthly monitoring mastitis herd
health program. Since its adoption
by Delaware DHIA S years ago,
we have progressed 33 percent
from 512,000 down to 343,000
somatic cell-count per herd rolling
average.
However, fertility as part of
satisfactory or even improved
reproduction has not enjoyed
similar progress. There is even
indication that the tremendous
progress in the production of milk
volume, milk fat, milk protein,
milk lactose and milk mineral
yields has something to do, in a
negative way, with the lack of fer
tility improvement or even its
regression.
A study of New York DHIA
herds shows that fertility rates are
lower in high-producing herds
than in lower-producing herds.
Pennsylvania studies found signif
icantly lower first-service concep
TROUBLE-FREE DESIGN: Our feeder has only two moving
parts - the one-piece auger plus each drive wheel: their chain
has more. Our comers are heavy 12 ga. zinc plated tubing for
long life: their comers have a reputation for trouble and short life.
vt
-y
Complete Astern - Feeding, Ventilation,
U* t<m Authorised {jQSSo Master Distributor
SYSTEMS, INC.
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(717) 569-2702
tion rates in high-producing cows
when inseminated before 100 days
after calving than in lower
producing cows. However, in
cows milking more than 100 days
after calving, there was no differ
ence between high- and low
producing cows in conception
rate. This suggests that high milk
production during the peak period
of the first 100 days of lactation
and all related factors, especially
feeding and nutrition for that peak
production, have something to do
with the problems in conception
rate.
Studies have focused on the
role of protein in the dairy ration
with respect to fertility. When
dietary protein levels were
increased, conception rates
improved in some trials but
worsened in others, depending on
other factors, obviously, besides
the change from 16 percent to 20
percent protein in the ration. New
studies on the degree of undegra
dability of protein in the rumen
seem to indicate that high rates of
_JING OF FEED;
Our auger traveb at 80 FI
>o bird* are limited from eat
until it etope; birds will hl-gri
feed from chain feeders,
causing uneven nutrition.
ING FEED; Our auger
•lowly revolves, remixing old ai
new feed; theirs leaves most
feed to get stale.
BILLED-OUT FEED; Our auger i
a grid to prevent bird* from raking,
and throwing out feed; neither chi
di*k systems prevent feed waste.
COST SAVINGS; Oun saves vast
amounts of energy costs since M's easier
to propel and runs only half as long as
theirs.
LOW MAINTENANCE; With our 5-year
warranty on auger and 20 ga. trough (one
competitor has only 22 ga.) - plus no >
comer wheel mechanisms to wear out -
ours saves you maintenance costs.
—i2l
V^gyvd^/
degradation of protein in the
rumen lower fertility because of
liberated ammonia that is
absorbed into the cows’ blood
stream from the rumen.
When extra energy sources arc
fed, the free ammonia is bound up
by rumen micro-organisms, and
fertility is improved. Direct evi
dence of the involvement of the
percent of rumen-degradable pro
tein comes from studies with
supcrovulating embryo-producing
cows, because fewer embryos
were harvested when rations con
tained high levels of rumen
degradable protein.
Levels of urea in the circulating
blood of dairy cows can provide
an indication of whether, for
example, a 19 percent crude pro-
PROVEN DESIGN; Over
10 million birds are already
on our feeder worldwide-
Also, it was proven in 5 years
of on-farm testing before
introduction.
STORE HOURS:
Mon.-Fri. 7:36-4:30
Open Saturdays
By Appointment
Lancaster Farming, Saturday. December 23,1989-A35
ISBSSJnorth airwrtca
Gasoline & Diesel Engines
Gasoline
6 HP Recoil St A 220 $295.00
6 HP Elect. St. A 220 $409.00
10 HP Recoil St. ALN33O $428.00
16 HP Recoil St. VTBB $795.00
Diesel
7 HP Recoil St. ADX3OO $890.00
7 HP Elect. St. ADX3OO $1,100.00
10 HP Hand Crank St. ADN37 $1,040.00'
10 HP Elect St. ADN37 $1,223.00
11 HP Handcrank St. ADN43 $1,089.00
11 HP Elect St. ADN43 $1,257.00
614 HP Elect. St. Slow
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12 HP Elect St Silenced ADN4B $1,360.00
14 HP Handcrank St ADNS4 $1,184.00
14 HP Elect. St ADNS4 $1,407.00
16 HP Elect. St. ADN6O $1,447.00
11 HP Slow Speed Elect St.
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All New With Three Year Warranty
Sale Ends Dec. 30
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R.D. 2 Box 102
Ephrata, Pa. 17522
PH. (717) 859-2797
I
tcin dairy ration will affect cow
and heifer fertility or not, because
blood urea contents arc related to
rumen-degradation rates of pro
tein. In recent studies, cows with a
blood urea test of 10 mg/dl had a
conception rate of 57 percent;
others with 10-20 mg/dl had 47
percent: and a third group with
more than 20 mg/dl had a concep
tion rate of 39 percent.
Routine testing for blood urea
levels of a few cows in that critical
time period of 40-100 days after
calving, when new cstrus and new
conception is supposed to occur,
would be a good new idea. Better
monitoring of nutrition and feed
ing improves dairy herd health as
it relates to reproduction and
profit.