A26—Lancaster Firming, Saturday, March 5,1983 *rj •
STATE COLLEGE The major
goal discussed at Dairy Day on
Tuesday at Penn State was to feed
and manage the lactating cow for
her most trouble - free, efficient
performance.
Providing dairymen with an
update on the dietary additives for
lactating cows was T.F. Sweeney,
Assistant Professor of Dairy
Science. Concerning the most
widely used and popular buffer,
sodium bicarbonate, Sweeney ex
explained because of the shifts in
types and amounts of feed, buffers
were recommended for most dairy
rations today. At a cost of 7 to 9
cents a day, cows do consistently
better with less stomach problems.
Beta Carotene, according to
Sweeney, is extremely beneficial
in getting cows bred back. Present
in high quality forage, Caroline
(vitamin Ay is needed in
reproductive efficiency. At a
feeding level of 300 mg./day for 100
days, beta carotene would cost 35
cents per cow per day. To
recommend this in a normal
feeding program without sufficient
need would be a mistake, ac-
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Buffers can help in dairy rations
cording to Sweeney.
The problem of heat detection is
present in every herd. According
to T.J. Alexander, Graduate
Assistant in Dairy Science at Penn
State, approximately half of the
heats are not observed in any given
herd. The fault, although partially
attributed to the poor observation,
record keeping, poor housing, or
general mismanagement of the
dairyman, can also be blamed on
the cow. According to Alexander,
there are cows that are in heat and
many times the herdmates will not
mount the cow in heat. Alexander
outlined the research done on this
subject to determine how this
situation could be corrected.
Preliminary findings show cows
in mid-cycle display less mounting
of herdmates in heat, with 50% of
cycling herdmates not interested.
The idea of introducing an un
familiar cow into the herd to, in
duce more heat behavior shows
promise but more experimentation
is needed.
Continuing the program, M.L.
O'Connor, Assistant Professor of
Dairy Science Extension, spoke on
Nylon Fittings
& Livestock Day
“Trouble Shooting Reproductive
Problems.” Reminding dairymen
that if their feeding program is on
key and management is there,
problems will be at a minimum,
O'Connor said that the lack of
awareness to a problem, labor that
is spread too thin, and the failure to
delegate responsibility will lead to
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an unprofitable calving interval.
Concluding the 1983 program,'
C.W. Heald, Associate Professor of
Dairy Science Extension, reviewed
the basic benefits of somatic cell
testing. Stating that "prevention is
the name of the game for
mastitis,” Dr. Heald reviewed
what happens in an udder when an
COMPUTER FEEDING IS HERE TO STAY
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• Choice of one or two
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infection is introduced. Because
cells are destroyed with mastitis, a
dairyman will not recover the loss
of milk and cost of antibiotics in a
lactating cow.
Dr. Heald’s concluding tips for
dairymen were to minimize
machine stripping, prevent
mastitis first, keep udders as clean
as possible, dry treat all cows, use
the CMT test when milking, and
strive to maintain a low somatic
cell count.
• Higher milk yields
• Time-saving feeding
• Higher butterfat con-
tent in the milk
• Better physical con
dition of the cows
• Cow calendar
,0- I