Whole Document Navigator (Click Here)    ---------------------------------- Top of Document Ingredients Needed Choice of Cereal Grains Swine Rations Methods of Getting Swine Rations Further information: Footnotes Disclaimer Copyright Infomation

4H Project Guide: Swine Nutrition¹

R.O. Myer and J. H. Brendemuhl²

A dependable and economical source of feed is the basis of a profitable hog operation. In fact, 40 to 60% of the total cost of producing hogs is feed. Thus, 4-Hers who raise hogs need to be keenly aware of the types of feed available.

Ingredients Needed

Swine rations, whether bought or mixed on the farm, usually contain a ground cereal grain, a protein source (usually soybean meal), salt, a calcium source, a phosphorus source, a vitamin-trace mineral premix, and an antibiotic premix. Other ingredients commonly added are milk by-products such as dried whey, ground alfalfa hay, or dehydrated alfalfa meal; meat by-products such as meat and bone scraps or tankage and cereal grain by-products such as wheat bran, wheat mids, or rice bran.

Choice of Cereal Grains

About 50 - 85% of the ingredients in swine rations are cereal grains. They are the main way of providing energy (or calories) in swine rations.

Corn is the cereal grain (energy source) preferred by most pork producers and is best in feeding value. However, other cereal grains, at times, may be a better buy.

Grain Sorghum, often called milo, is sometimes fed to hogs. Good quality grain sorghum has about 95% of the feeding value of corn. Grain sorghum has a protein and animo acid (building blocks of protein) composition similar to corn and can be interchanged on a pound-for-pound basis with corn.

Barley is occasionally fed to hogs. It has an energy value of about 90% that of corn. Its lower feeding value is caused by its high fiber content. You get best results by feeding a mixture of barley with either corn or grain sorghum. Barley grown in the south is usually of low quality, and its value is much lower than 90% of the value of corn. You should not use such barley in rations for very young pigs.

Wheat is an excellent swine feed, with an energy value of about 98 to 100% of corn. Sometimes it is priced low enough to be considered for pig rations. Some pork producers prefer to feed a mixture of wheat and corn or grain sorghum because they feel performance is better with a combination of grain sources. However, wheat can be the only source of grain.

Swine Rations

Four to five (or even more) rations are usually required in complete farrow-to-finish hog operations. The basic ones are bred sow (gestation), nursing sow (lactation), starter (young pigs 20 to 40 pounds), growing rations (40 to 120 pounds), and finishing rations (120 pounds to market). Some producers may use the same ration for bred sows and nursing sows. Boars are usually fed the bred sow ration. Table 1 gives example swine rations that may be mixed on the farm if a pork producer has a feed mill.

Methods of Getting Swine Rations

Here are six ways of getting swine rations:

1. Buy complete commercial rations by the bag. This is usually the most expensive method. The added cost of bagging and handling compared to bulk feed and often the sale of small quantities cause higher prices. However, if you are feeding just a few pigs, this may be your only option.

2. You may buy complete commercial rations in bulk (not bagged) and delivered directly to bulk tanks or large self-feeders on the farm. The cost of this service includes mark-up on ingredients and charges of grinding, mixing, and delivery.

3. Producers can often get a custom mix of a complete ration made at a feed mill. Pork producers may deliver all the ingredients to the mill, have grain stored at the mill, and buy the additional ingredients from the mill or buy all ingredients from the mill. The cost may include handling and storage charges, mark-up on ingredients, and charges for grinding, mixing, and delivery.

4. You may buy complete supplements for mixing with ground grain on the farm. Two or three different supplements are usually required for farrow-to-finish systems (i.e. for sow feeds, starter feeds, and growing-finishing feeds). Supplements required in small quantities are bought in bags. Larger volumes usually justify bulk handling.

5. You can buy base mixes (complete premixes) in bags and mix with soybean meal and ground grain on the farm. This usually involves two or three different base mixes for farrow-to-finish systems. Base mixes are usually sold to be added at the rate of 50 to 100 pounds to a ton of complete feed.

6. You can prepare base mixes (complete premixes) on the farm. A mixer of the appropriate size and design is essential to insure adequate mixing. Each base mix is then mixed with soybean meal and ground grain to produce the ration. Required bagged ingredients include salt, calcium source, phosphorus source, and vitamin-trace mineral and antibiotic premixes. This method is used by many producers with 100 or more sows because it offers greater flexibility in ration formulation and lower ingredient costs.

Further information:

1. Local county extension service

2. Pork Industry Handbook (available through

Purdue University Extension Service):

www.ces.purdue.edu/extmedia/ansci.htm

a. Swine rations - PIH-23

b. On farm feed processing - PIH-4

3. Websites :

a. edis.ifas.ufl.edu/TOPIC_4H_Animal_Science

b. edis.ifas.ufl.edu/TOPIC_Swine

c. edis.ifas.ufl.edu/TOPIC_4H_Swine

d. tcebookstore.org/pubinfo.cfm?pubid=1541

e. animalscience.tamu.edu/ansc/index.htm (click on youth projects).

Tables

Table 1. Example rations fed to pigs.

	20 to	40 to	125 Lb.	Gestating	Nursing
Ingredients	40 Lb.	125 Lb.	to Market	Sows	Sows
Corn, yellow	1040	1545	1645	1675	1535
Oat groats	200	--	--	--	--
Soybean meal, 48%	500	400	300	250	400
Dried whey	200	--	--	--	--
Calcium carbonate	15	15	17	20	15
Dicalcium phosphate	30	27	25	40	30
Salt	10	10	10	10	10
Vitamin-trace mineral mix	5	3	3	5	5
Antibioticsa	+	+	+	+	+
Total	2000	2000	2000	2000	2000
Protein, %	18.5	16.0	14.1	13.0	16.0
Lysine, %	0.95	0.80	0.66	0.60	0.80
Calcium, %	0.78	0.64	0.65	0.90	0.75
Phosphorus, %	0.66	0.56	0.54	0.70	0.60
aThe choice of antibiotics or other feed additives varies depending upon need and class of pigs. See your 4-H leader, county extension agent, feed dealer, or veterinarian on choice of antibiotics to use in a ration.

---

Footnotes

1. This document is 4H225, one of a series of the Animal Science Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date July 1, 1988 as 4HSR-17. Reviewed May 8, 2003. Visit the EDIS Web Site at http://edis.ifas.ufl.edu.

2. R.O. Myer, Professor of Animal Sciences, North Florida Research and Education Center, Marianna, Florida and J.H. Brendemuhl, Professor of Animal Sciences, Department of Animal Sciences; Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, Florida 32611.

---

The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other extension publications, contact your county Cooperative Extension service.

U.S. Department of Agriculture, Cooperative Extension Service, University of Florida, IFAS, Florida A. & M. University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Larry Arrington, Dean.

---

Copyright Information

This document is copyrighted by the University of Florida, Institute of Food and Agricultural Sciences (UF/IFAS) for the people of the State of Florida. UF/IFAS retains all rights under all conventions, but permits free reproduction by all agents and offices of the Cooperative Extension Service and the people of the State of Florida. Permission is granted to others to use these materials in part or in full for educational purposes, provided that full credit is given to the UF/IFAS, citing the publication, its source, and date of publication.