Lancaster farming. (Lancaster, Pa., etc.) 1955-current, March 01, 1975, Image 15

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    Early Weaning Is Found
To Boost Young Cows ’
Reproduction Efficiency
Weaning fall beef calves
early • at about 2 months of
age instead of the usual G'*j
Parade of the Profit-Makers
These Plus-Proven Sires Are Available Daily
-
15H171 Mmnechaug Glenafton HERCULES
Very Good |BB| & Gold Medal, PQIII/74] & TQIS/74)
USDA (Nov /74) - 36 Daus in 7 Herds Ave 19 593 M
Predicted Difference (45“<> rpl) +729M
29 Pr Classified Daus Ave 80 9 (act) +BO PDT
Sire Glenafton Rag Apple Charmer EX&GM
Dam Mmnechaug Vee Tony EX 2E &GM
135 DAIRY SIRES ARE NOW AVAILABLE THROUGH OUR PROFESSIONAL TECHNICIAN SERVICE!
-Atlantic
BREEDERS COOPERATIVE
LIVESTOCK
SERVICES
months
increases
efficiency of
reproductive
young cows.
Member NAL Affiliated Breeders
In studies at the U.S. Meat
Animal Research Center,
Clay Center, Nebr., early
weaning increased the
percentage of cows coming
into heat in a 42-day breeding
season. Pregnancy rates, as
a result, increased 26 per
cent in 2-year-old cows, 16
percent in 3-year-olds, and 8
percent in mature cows,
when compared with
pregnancy rates of similar
cows whose calves were
weaned at the conventional
time. The Center is a unit of
USDA's Agricultural
Research Service.
Whether or not early
weaning would be an ef
ficient practice depends
upon the management and
feed production situation,
ARS physiologist Danny B.
points out. He says
early weaning may be an
effective management tool
with young or late-calving
cows in colder regions,
particularly when crop
residues or pastures would
support fall grazing by the
cows but are inadequate for
cow-calf pairs. Early
weaning might be similarly
useful in emergency drouth
situations. Other possible
applications include cow
herds managed for fall
calving or in semicon
finement.
Dr. Laster evaluated early
weanmg with 308 Hereford,
Angus, Charolais-cross, Red
Poll, and Brown Swiss cows
ranging in age from two to 11
years. The calving period
3 53" 692 F
+ $46 +BF
extended from Aug. 7 to Oct.
12, and the 42-day breeding
period began 28 days after
the last cow had calved.
Eight days before the start of
the breeding period, calves
were weaned from 98 of the
cows. Calves from the
remaining 210 cows were
weaned at the conventional
time. The early-weaned
calves ranged in age from 34
to 76 days, with an average
of 55 days. All cows were
maintained on pasture and
were bred by artificial in
semination
Early weaning increased
the percentage of cows
coming into heat from
calving through the breeding
period by 29 percent in 2-
year-olds, 27 percent in 3-
year-olds, and 16 percent in
cows 4 years of age and
older. In the first 21 days of
breeding, early weaning
increased the percentage of
2- and 3-year-old cows ready
to breed by 39 and 24 percent,
respectively, but did not
similarly affect mature
cows.
Laster says the calving
date also influenced the
interval from calving to first
breeding in cows of all ages.
Cows calving earlier in the
season were ready for
breeding in a shorter time.
The intervals from calving to
coming into heat, and from
calving to first breeding,
were longer in Brown Swiss
cows 4 years of age and older
than in cows of other breeds.
The number of in
seminations required per
conception was not in
fluenced by early weaning.
Likewise, it had no effect on
calf gain up to one year of
age.
BLIND PEOPLE
There are six million blind per
sons in the United States Fifty
percent of them are over sixty
vears old
* $ *■»£♦. “
il
15H161 Kanawaka EDUCATOR
Very Good 1871 & Gold Medal, PQIII/74) S TQII/74)
USDA (Nov /74) - 24 Daus in 5 Herds Ave 17 683 M
Predicted Difference (39°0 rpl) +526M
Type 17 Pr Classified Daus Ave 83 8 +1 55 PDT
Sire Quin Lynn Triune Prince VG &GM
Dam Kanawaka Burkgov Lucky Mandy EX
273 6763
367 3923
566 2569
384 2741
857 5545
932 9361
469 9238
CLEONA*
Elizabethtown
Hummelstown
COATESViLLE'
Parkesburg
Oxford
Pughtown
1 scatter Farming, Saturday, March 1.1975—1
TRY A
CLASSIFIED
Action"
disks are a level
better at making
level seedbeds— n
John Deere looked at old-style disks and
came up with a new design—as if no disk
ever existed before Level-Action disks
proved their reliability during more than
25,000 acres of testing. Prove the disking
results on your land —a level surface, a level
disk floor, and uniform mixing in between
Choose from nine different models in three
weight classes
A.B.C. Groff, Inc. Landis Bros. Inc.
New Holland 717-354 4191 Lancaster 717-393 3906
Adomstown .
ArTf"*£?£*?; *■
Mohnton, RD2, Pa 19540 717 235-1306
InearAdamstownl
215 484 4391
Pikeville Equipment Inc:
Oyster Dale Road
Oley RD#2, PA
215-987-6277
For Your Dairy Herd:
W* \
>■»*»
4 , ,* . ** .
Call for service and information
LANCASTER 1,
Akron
East Earl
Gap*
Mount Joy
Quarryville
569 0411
859 2552
445 4131
442 4471
653 1451
786 7381
*24 hour answering service or recorder
old
tyle
isk
pares
3 71'
+ $34
656 F
+7F
376 8297
273 6763
792 0941
927 6210
382 4805
428 2266
523 4426
READING*
Lebanon*
YORK*
Broguaville
Fawn Grove
Seven Valley
York Springs