You are here

Can raw soybeans be used in swine diets?

Since the 1930s, pork producers have known raw soybeans contain anti-growth factors. Use of raw soybeans in swine diets has been discouraged because of decreased pig performance. Anti-growth factors in raw soybeans are destroyed when beans are heated at the proper temperature. The result is an excellent source of supplemental protein.

Soybean meal, a by-product of the soybean oil industry, has been effectively used by the swine industry as a source of supplemental protein. Soybean meal is produced from raw soybeans by processes requiring energy to remove the oil from the beans. Roasting and extruding raw soybeans also requires energy expenditure, adding extra cost to diets using these products.

Previous research has indicated that raw soybeans can replace soybean meal as the supplemental source of protein in gestating sow diets. Also, research has shown that gestation diets supplemented with fat improved pig survival. Raw soybeans contain about 18.5 percent crude fat and average 36 percent protein. The use of raw soybeans in gestating sow diets could be beneficial to the swine producer. Possible advantages include:

  • fat content of the diet could be increased without using a liquid fat source.
  • mechanical energy could be conserved from the processing of raw beans.
  • cost of the diet could be reduced.

Because raw soybeans contain a high level of crude fat, the soybeans should not be stored for any length of time in the ground form without the addition of an antioxidant. It is recommended that only the amount of beans needed in the complete diet be ground, mixed and fed to the gestating sows. Diets containing raw soybeans (without antioxidants) should be mixed frequently in the summer months.

The replacement of soybean meal in a gestation diet with raw soybeans will require more pounds of the raw soybeans than soybean meal to equal the same protein level. Therefore, when evaluating the economics of feeding raw soybeans (RSB) compared to feeding soybean meal (SBM) in gestating sow diets consider the difference in the levels of ingredients (Table 1). Also, one must consider the cost of including a fat source to the soybean meal diet if increasing dietary energy is a desired goal.

Most of the time, replacement of soybean meal with raw soybeans will not be cost effective based upon current ingredient costs. In the event a greater than normal price spread in raw soybeans and soybean meal occurs, the addition of raw soybeans to a gestation diet may become cost effective. This situation may develop when soybeans are damaged or discounted at market. Other considerations in comparing the value of raw soybeans include the addition of fat to the diet and any increase in survival rate of the pigs. If feeding raw soybeans produces an increase in pig survival rate, using raw soybeans will become more cost effective.

Conclusion

At this time, the use of raw soybeans in swine diets other than gestating sow diets is not recommended. The use of raw soybeans in grower/finisher diets will greatly reduce daily gain and increase cost of production. It appears the only diet raw soybeans can be fed without decreasing production is in the gestation diet of sows from breeding to farrowing.

Table1: Example Gestation Diets
Ingredient, % SBM RSB SBM + fat
Corn
(8.5%, protein)
79.56 74.77 74.85
Soybean meal
(44%, protein)
16.44 --- 17.35
Raw soybeans
(36%, protein)
--- 21.23 ---
Fat source --- --- 3.80
Other ingredients 4.00 4.00 4.00

 

Note: The diets listed above are intended to illustrate cost comparisons and should not be used for mixing feed.

Printer Friendly and PDF

News

Pigs and hogs feed at Palo Alto Farms in West Point, Mississippi in this file photo. Consumer preference is one reason interest has been growing in people in the state raising pigs on pastureland for their own consumption. (File photo by MSU Ag Communications/Kevin Hudson)
Filed Under: Swine September 18, 2015

STARKVILLE, Miss. -- Low feed costs and steady demand are keeping the playing field level for Mississippi swine producers, but the bottom line at year’s end will be down from 2014 totals.

Mississippi’s value of production for hogs was $153 million last year. No estimates are available for 2015, but hog prices have been much lower than they were in 2014, while hog numbers were higher at the first of the year.

Palo Alto Farm near West Point grew this and many other pasture-raised pigs to meet the increasing demand for locally grown foods. (Photo by MSU Ag Communications/Kevin Hudson)
Filed Under: Swine September 17, 2015

STARKVILLE, Miss. -- Specialty markets in pork production are cropping up across the U.S. in response to a growing interest in pasture-raised pigs.

Before the 1960s, most U.S. pork was raised in outside lots or on pasture systems. Commercial pork production today generally relies on large warehouse-like buildings or barns that house sows and pigs in stalls or pens.

Mississippi 2014 Estimated Value of Ag Production
Filed Under: Catfish, Corn, Cotton, Rice, Soybeans, Sweet Potatoes, Agricultural Economics, Forages, Beef, Poultry, Swine, Forestry December 19, 2014

MISSISSIPPI STATE -- Despite low prices for many commodities, the overall projected totals for Mississippi’s crop values should top $7 billion for the third straight year and essentially match the record set in 2013.

John Michael Riley, agricultural economist with the Mississippi State University Extension Service, said his preliminary estimate of 2014’s agricultural production values, excluding government payments, is over $7.7 billion.

Mississippi cattle, such as this one on the Beaverdam Fresh Farms in Clay County, Mississippi, on July 8, 2014, eat less and grow slower during the hottest months. While Mississippi has not faced extremely dry conditions in recent years, the state's herd numbers are still down, just like those in drought-stricken regions. (Photo by MSU Ag Communications/Kat Lawrence)
Filed Under: Swine, Beef July 11, 2014

MISSISSIPPI STATE -- Cattle and hog prices are soaring to record highs, causing producers to debate whether to sell their valuable animals or expand their herd sizes for the future.

“It’s hard not to sell when prices are this good and the pull of the feedlot is so strong,” said John Michael Riley, an agricultural economist with the Mississippi State University Extension Service.

As producers continue to reduce herd sizes nationally, prices should remain strong, but the result will be fewer animals available to sell in the future.

William White works to install pig-handling equipment in a multipurpose building being readied for swine nutrition research at Mississippi State University's H.H. Leveck Animal Research Center. (Photo by MSU Ag Communications/Scott Corey)
Filed Under: Swine October 18, 2013

MISSISSIPPI STATE – A partnership with Prestage Farms Inc. is allowing Mississippi State University to improve its swine research facility as university scientists prepare to resume swine-related studies.

John Blanton, head of the Department of Animal and Dairy Sciences at MSU, said there is a need in the Southeast for science-based information on swine production.
“We are addressing that need of our stakeholders through our swine research program,” Blanton said.

Watch

Farmweek, Entire Show, October 16, 2015, Season 39 Show #14
Farmweek

Season 39 Show #15

Thursday, October 15, 2015 - 7:00pm
Farmweek Entire Show - May 1, 2015
Farmweek

Show #3843

Thursday, April 30, 2015 - 7:00pm

Contact Your County Office

Your Extension Experts

Extension Professor
Extension Swine/Mississippi Pork Producers Association Executive Secretary