PRINCETON, N.J. - The battle
to get more energy into high
producing dairy cows is heating up
as producers ask cows to produce
more and more. And as dairy
producers recognize the im
portance of increasing the energy
density of their rations, many are
turning to fat. Fat contains 2.6
times more net energy than other
feedstuffs and is used iriore ef
ficiently by the cow, reports an
Ohio State Professor and
researcher.
“Anyone who has higher than
average herd production, more
than 80 pounds of milk per day for
Holsteins, should consider using
fat to meet his cows’ energy
requirements,” says Dr. Donald
Palmquist, a professor with the
department of dairy science at the
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Higher Production Levels Sustained with Added Fat
Ohio Agricultural Research and accompanied by good feed as vegetable oils, are more toxic fats do undergo some changes as
Development Center and The Ohio management. than saturated fats,” Palmquist they go through the rumen, but
with tat The use of fats in dairy cow explains. fiber digestion is normal.”
ine prooiem wun trying to rations is increasing, according to “Any free fat has more potential In addition, calcium salts of fatty
meet high-producing cows energy p a lmquist, but he notes that there problems than one with some kind acids are dry granules, Palmquist
requirements with com is that you are some problems with feeding of protection that allows it to be reports, that handle and pellet
end up with toohtUe forage in the fats. “We generally think of fats as released slowly so the rumen well.
ration, it is better to increase desirable, but at higher levels, microbes can saturate the fat. A calcium salt of fatty acids
content with fat and keep the fiber they cause problems in the rumen. “Many of the fats are also ex- product developed from
content high. .... Our goal is to find which forms of tremely hard to handle and to Palmquist’s research has been
Palmquist.recommendsfeeding f at cause the fewest problems,' incorporate into feeds,” the marketed in the United Kingdom
fat to cows during the first five to palmquist says. " professor continues. “They’re like for several years. The product,
20 weeks of lactation when their The fats generally used in dairy a stick of margarine and have to be MEG ALAC™ rumen bypass fat, is
energy requirements peak. This rations- whole cottonseed, whole melted and stored in heated tanks, currently hping test marketed in
is the period when a cow is pustung soybeans, tallow, vegetable oil, Pellets made with these fats are of Ohion and Pennsylvania by Church
up to her genetic potential, and to dried and prilled fats and other low quality and break up easily.” & Dwight Company, Inc.,
reach that potential, she has to commercially-processed fats- Palmquist’s response to these manufacturers of ARM & HAM
have adequate energy m her diet. vary the degree of problems problems is a rumen-inert fat MER™ sodium bicarbonate.
The maximum feeding level of they may cause. called calcium salts or soaps of “I have high hopes that calcium
free fats recommended by “The most prevalent problem is .fatty acids. “Calcium salts of fatty salts of fatty acids will solve the
Palmquist is three percent of the that some fats are toxic to the acids are insoluble at normal problems associated with feeding
ration dry matter, perhaps as high fiber-digesting microorganisms in rumen pH and do not inhibit the other forms of fat,” Palmquist
as five percent of the ration if the rumen. Unsaturated fats, such fiber-digesting organisms. These says.
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