Ingredients for Dairy Processors / Omegas/Lipids / Case Studies
Ingredients

OSU study: Cows fed flaxseed produce more nutritious dairy products

By Daniel Robison

Dairy cows that are fed flaxseed produce more nutritious milk, according to a new study by Oregon State University.

OSU researcher Gerd Bobe
OSU researcher Gerd Bobe led a study that fed flaxseed to dairy cows and examined the effects to milk, cheese and butter. Photo by Hannah O'Leary

Their milk contained more omega-3 fatty acids and less saturated fat, the study found. Diets high in saturated fat can increase cholesterol and cause heart disease, while those rich in omega-3 and other polyunsaturated fatty acids may reduce the risk of heart disease, studies have shown.

Traditional cattle feed mixtures of corn, grains, alfalfa hay and grass silage result in dairy products with low concentrations of omega-3 and other polyunsaturated fats, according to Gerd Bobe, the lead scientist on the study, which has been published online in the Journal of Dairy Science.

Ten pregnant cows at OSU's dairy were fed different amounts of flaxseed – up to seven percent of their daily diet. Researchers attempted to pinpoint the amount of flaxseed that would maximize the amount of omega-3 in milk and dairy products without negatively affecting their production and texture.

"We were looking for a sweet spot,” said Bobe, an expert in human and animal nutrition. “Too much of a good thing can be bad, especially when trying to maintain consistency with dairy products.”

Collaborators in OSU's food science and technology department assisted in turning milk into butter and fresh cheese, which were then tested for texture and nutritional composition.

The study found that feeding cows up to six pounds of extruded flaxseed improved the fat profile without negatively affecting the production and texture of the milk and other dairy products. Extrusion presses raw ground flaxseed into pellets with heat.

OSU Study Cows fed Flaxseed
Dairy cows fed up to 7% of their daily diet (about six pounds) produced milk with lower amounts of saturated fat and higher concentrations of Omega-3 fatty acids. Photo by Lynn Ketchum

At six pounds per day, saturated fatty acids in whole milk fat dropped 18 percent, poly-unsaturated fatty acids increased 82 percent, and omega-3 levels rose 70 percent compared to feeding no flaxseed. Similar improvements were observed in butter and cheese. Still, saturated fat accounted for more than half of the fatty acids in the dairy products while the increase in polyunsaturated fats compromised no more than nearly nine percent of the total.

Researchers also noted that the refrigerated butter was softer and less adhesive thanks to fewer saturated fatty acids. Also, the cows produced the same amount of milk while eating flaxseed. Although flaxseed costs more than traditional cattle feeds, Bobe hopes that it still could be an affordable feed supplement for cows because products enriched with omega-3 can sell for a premium at the grocery store.

"Many consumers already show a willingness to pay extra for value-added foods, like omega-3 enriched milk," he said.

One thing is for sure, he said: Dairy farmers will have no trouble convincing cows to eat flaxseed. "They loved it. They ate it like candy," he said.

About Oregon State University:
OSU is one of only two U.S. universities designated a land-, sea-, space- and sun-grant institution. OSU is also Oregon’s only university to hold both the Carnegie Foundation’s top designation for research institutions and its prestigious Community Engagement classification. Its approximately 26,000-plus students come from all 50 states and more than 90 nations.

Source: Gerd Bobe, OSU researcher
 

Did you enjoy this article? Click here to subscribe to Dairy Foods Magazine.

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

4 mouth-watering grilled cheese sandwiches you have to make in April, National Grilled Cheese Month

In recognition of National Grilled Cheese Month (April), Arla Dofino asked two food bloggers to re-imagine this comfort-food classic.

Heidi Larsen of FoodieCrush.com and Maria Lichty of TwoPeasAndTheirPod.com created four grilled cheese sandwich recipes that call for creamy Havarti, dill Havarti, smoked Gouda and Eureka! Organic Breads products.

Arla Foods, a cooperative owned by European dairy farmers, is the fifth largest dairy company in the world. The Arla Dofino brand of cheese includes Havarti, Gouda, Edam and Fontina, which are made by the Hollandtown Dairy in Kaukauna, Wis.

3/31/15 2:00 pm EST

Raising the bar with in-line mixing and blending technologies: high output with flexibility and low costs

On Demand In this webinar, you will be introduced to advanced in-line blending, dosing and mixing technologies that offer high flexible productions, reduced product losses, shorter batch times, uniform products, and reduced ingredient costs. As a result, Food Manufacturers can optimize their productions and increase their profitability.

Dairy Foods Magazine

april df cover

2015 April

We look inside Kroger's Denver plant; Also, see what trends are happening in yogurt.

Table Of Contents Subscribe

Cheese

What is your favorite way to eat cheese?
View Results Poll Archive

THE DAIRY FOODS STORE

tharp-and-young-on-icecream.gif
Tharp & Young on Ice Cream: An Encyclopedic Guide to Ice Cream Science and Technology

An at once an all-inclusive guide to the meaning of hundreds of technical terms and ideas needed for ice cream manufacturing, as well as a practical introduction to the ingredients, freezing methods, flavoring, and packaging of ice cream, sherbet, sorbet, gelato, frozen yogurts, novelties and many other kinds of frozen desserts.

More Products

Clear Seas Research

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

STAY CONNECTED

Facebook logo 40px 2-12-13 Twitter logo 40px 2-12-13  YouTube logo 40px 2-12-13  LinkedIn logo 40px 2-12-13google plus

Dairy Foods Buyers Guide

cover df july 2013Resource for buyers in the dairy processing industry to find information on the leading suppliers and manufacturers.

Find Ingredients, Equipment, Distribution, R&D and More.

Start Your Search Today.