Brewers Grains

Brewers grains, a by-product of beer production, are often used as a livestock feed. Because brewers grains provide protein, fiber, and energy, they can be useful in a variety of diets.

Protein in brewers grains can meet a significant portion of supplemental protein requirements; in addition, they provide fiber and needed bulk in the diets of ruminants and horses. Brewers grains and other brewers by-products have also been fed to pigs, sheep, and poultry.

Brewers' spent grain: a review with an emphasis on food and health

Kieran M. Lynch Eric J. Steffen Elke K. Arendt

Spent Grain for Livestock Feed - Turn brewers' spent grains into filling and nutritious livestock feed

Kieran M. Lynch Eric J. Steffen Elke K. Arendt


Studies showed that citrus products provide cows with good roughage and vitamins, and the essential oils in such products provide a natural antibiotic effect. U.S. Department of Agriculture (USDA) scientists and their collaborators have conducted a series of studies that explore non-antibiotic methods to reduce foodborne pathogens that are found in the gut of food animals.

Using of citrus by-products in farm animals feeding

Alsaied Alnaimy

Cleaning Cows from Inside Out


Grape marc

Grape is the largest fruit crop worldwide and the grape pomace is an important solid waste generated from pressing and fermentation processes in wine industries. Wine industry residues are rich in bioactive compounds and, used as a feed supplement by the dairy and beef industries.

The Use of Grape By-Products as a Nutrient Rich Cattle Feed

Zachary Christman

Grape marc reduces methane emissions when fed to dairy cows

American Dairy Science Association

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