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The Pig Versus the Feeding Standards

Animal Husbandry Section, Iowa Experiment Station

Abstract

Determining the efficiency of the "Free-Choice" System of Swine Feeding in the growing and fattening of pigs, taking them from weaning time, when they are approximately two and one-half months of age, and feeding them for five months, or 150 days, until they reach the approximate age of seven and one-half months, is an interesting problem. Should these pigs be fed "Free-Choice" style through the use of the self-feeder, or would three times a day, or twice a day feeding be better, the feeds simply being allowed in separate compartments of a trough and taken away after the pigs have eaten what they wish? When it comes to producing rapid gains at a minimum of feed outlay, how does the "Free-Choice" System of Swine Feeding compare with the feeding standards, namely: —the Illinois or Dietrich standard when the water is allowed at free-will and when the water is weighed and allowed as per the standard; the Kellner standard, this being based upon the albuminoid protein; the Wolff-Lehmann Standard, this being based upon the actual nutrients as specified for 100 pounds of live weight?

^* With the collaboration of Russell Dunn, Assistant in Animal Husbandry, Milton H. Scott, senior student, and F. A. Hays, graduate student, Iowa State College.