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Higher Forage Rations Deserve a Look

Higher Forage Rations Deserve a Look

Dairy cattle and other ruminants are biologically designed to convert forages and other fibrous feeds into high-quality milk and meat for human consumption. The rumen microorganisms are the key to making this system work. Forages are the foundation upon which nutritionally sound economical and rumen healthy rations are built. The quality and quantity of forages fed to the dairy herd is directly related to milk production, purchased feed cost, whole-farm nutrient balance, and profitability.

In 2017, we did a survey of feed industry professionals to obtain input on forage feeding in dairy herds. One question was how the amount of forage in the ration had changed in the last 10 to 15 years. They reported that 91% of the herds had raised forage feeding levels. Herds feeding over 60% of the total ration dry matter as forages represented 36% of the responses while herds feeding over 70% forage accounted for 11% of the herds.

In 2019, we surveyed 79 herds with an average energy-corrected milk production of 109 pounds of milk. Nineteen of these herds fed over 60% forage in the ration with one herd feeding 72% forage.

Why have forage feeding levels increased over the years?

One reason is the improvements made in forage quality and yield of the corn hybrids and forage varieties in the market. There have also been advances in forage production, management, and storage practices. The result is that farms are producing more tons of high-quality, more digestible forage per acre. This adds to the inventory of forage available to use in feeding programs.

Advances in forage analysis, ration formulation programs, and feeding management practices provide better information to utilize forages in rations. All of these contribute to the enhanced forage levels in rations. The two primary reasons listed for not feeding higher levels of forage were forage quality not being good enough and inadequate forage inventory.

What are the benefits of feeding higher forage rations?

One is the opportunity to lower purchased feed costs and improve income over feed cost. Other benefits from our survey include improved milk components, improved animal health, lower culling rate, and cows staying in the herd longer.

What does your forage customer want to eat?

The dairy cow is your forage customer. Cows are looking for a consistent supply of high-quality, high fiber digestibility, and palatable forage. If silage is fed, it needs to be well fermented. There also needs to be an adequate amount of “effective” physical fiber to support chewing, rumination, and rumen health.

What do these rations look like?

A recent example was from a farm with a high group producing an average of 115 pounds of milk per day. The ration fed was 69% forage with 16.6% crude protein (CP), 31% neutral detergent fiber (NDF), 25% forage NDF, 27% starch, and 5.3% fat. Forages fed were brown midrib (BMR) corn silage and alfalfa silage in a 2-to-1 ratio on a dry matter basis.

A second herd was producing 85 pounds of milk with a ration containing 83% forage that included a mix of corn silage (55% of forage), mixed legume-grass silage (37%), and oatlage 8%). There are other herds feeding a wide variety of forages in higher forage rations. Forage quality and consistency are more important than forage type.

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