Most cattle producers can safely feed beet pulp at 12% to 30% of the total diet on a dry matter basis, depending on the class of cattle and the role beet pulp plays in the ration. For a typical beef cow, that translates to roughly 30 to 35 pounds of wet beet pulp per day when included at 20% of diet dry matter. The right amount for your operation depends on whether you’re backgrounding calves, finishing steers, or maintaining a cow herd.
Recommended Rates by Class of Cattle
Beet pulp is flexible enough to fit into rations for nearly every stage of production, but the inclusion rate shifts considerably depending on what you’re feeding. Research at North Dakota State University provides useful starting points, expressed as a percentage of total diet dry matter:
- Growing/backgrounding steers: up to 20% of diet DM, with a ceiling around 40% in backgrounding diets
- Finishing steers: 5% to 15% of diet DM, used as a partial roughage replacement
- Bred heifers: roughly 27% of diet DM
- Gestating beef cows: 28% to 45% of diet DM
- Lactating beef cows: up to 36% of diet DM
University of Nebraska research has pushed beet pulp to 45% of the ration dry matter in mature beef cow diets without adverse effects. In those trials, late-gestation cows eating a 45:20:35 mix of beet pulp, wet distillers grains, and wheat straw consumed about 15.3 pounds of total dry matter per head per day. A lower-inclusion ration with 20% beet pulp required 18.6 pounds of dry matter to meet the same nutritional targets, which illustrates how higher beet pulp levels can actually reduce total intake while still maintaining body condition.
Dairy Cow Inclusion Rates
For lactating dairy cows, beet pulp typically replaces a portion of the grain concentrate or the forage in the ration, but not both at once. A practical upper limit is about half the grain concentrate, which works out to 8 to 15 pounds of dry matter per cow per day. When used as a forage substitute, beet pulp can replace 15% to 25% of the forage dry matter in the diet.
Research testing pelleted beet pulp at 0%, 6%, 12%, and 24% of the dairy ration found that substituting beet pulp for corn did not change average rumen pH or daily minimum pH. It did tend to narrow the range of pH swings throughout the day, which is a sign of more stable fermentation. That stability is one reason beet pulp appeals to dairy nutritionists looking for a safer energy source than high-starch grains.
Feeding Beet Pulp to Calves
Calves can handle beet pulp earlier than many producers expect. In one trial, calves from birth to 70 days old were fed starter diets containing 0%, 10%, or 20% beet pulp. The calves on 10% beet pulp tended to eat more starter, gained more weight, and were heavier at weaning on day 50 than calves on the other diets. A separate study fed 0%, 15%, or 30% beet pulp to Holstein calves from about two to four months of age, and growth and feed intake were similar across all three groups. So 10% to 15% is a reasonable starting point for young calves, and levels up to 30% appear safe in older calves without hurting performance.
Why the 20% Threshold Matters
While beet pulp can technically go much higher, dry matter intake starts to drop once you exceed about 20% of the total diet. At 20%, cattle eating wet beet pulp will consume roughly 30 to 35 pounds of the wet product, which amounts to less than 1% of their body weight on a dry matter basis. Push above that level and cattle tend to eat less total feed. That’s not always a problem: in limit-fed rations where you’re deliberately controlling intake, higher beet pulp levels work well. But in ad-lib or self-fed situations, the intake depression can quietly reduce performance if you haven’t accounted for it.
How Beet Pulp Compares to Corn
Beet pulp carries about 85% of the energy value of corn, with a total digestible nutrient (TDN) range of 68% to 74%. That means you need slightly more beet pulp by weight to deliver the same calories. In Korean cattle steer trials, roughly one-third of the corn in a finishing diet was replaced with 18% beet pulp plus a small amount of supplemental fat to match the energy of the original corn-based ration.
The energy in beet pulp comes from highly digestible fiber rather than starch, and this distinction matters for rumen health. Corn delivers its energy through rapid starch fermentation, which can drop rumen pH and push cattle toward acidosis. Beet pulp ferments into acetate instead, keeping the rumen environment more stable. This makes it especially useful in high-concentrate finishing diets where acidosis risk is a constant concern.
Nutritional Profile and What to Supplement
Beet pulp is a moderate-energy, low-protein, high-fiber feed. Typical dry matter composition includes 8% to 11% crude protein, 35% to 43% neutral detergent fiber (NDF), and a calcium level around 1.14%. Phosphorus is very low at roughly 0.06%. That extreme calcium-to-phosphorus imbalance (close to 19:1) means any ration built around beet pulp needs supplemental phosphorus. A mineral mix or a phosphorus-rich byproduct like distillers grains can correct this.
Protein is the other gap. At 8% to 11% crude protein, beet pulp alone won’t meet the needs of growing cattle, lactating cows, or any class of animal with protein demands above maintenance. Pairing beet pulp with distillers grains, soybean meal, or a protein supplement keeps the ration balanced. In the Nebraska cow trials, wet distillers grains at 20% of the diet provided enough protein and phosphorus to offset the shortcomings of beet pulp at 20% to 45% of the ration.
Wet Versus Dry Beet Pulp
Wet (pressed) beet pulp typically runs 20% to 30% dry matter, meaning 70% to 80% of what you’re hauling is water. Dried beet pulp is around 90% dry matter. The nutritional value per pound of dry matter is essentially the same, but the practical differences are significant. Wet pulp is bulky, heavy, and spoils within days in warm weather, so it’s usually only economical near sugar processing plants. Dried or pelleted beet pulp stores easily and mixes into TMR without handling headaches, but it costs more per unit of energy because you’re paying for the drying process.
Molassed beet pulp, which has some of the extracted sugar added back, is slightly more palatable and marginally higher in energy. However, research shows that the addition of molasses doesn’t significantly change the crude protein, TDN, or fat content. The practical difference between molassed and plain beet pulp is small enough that price and availability should drive your choice, not nutritional concerns.