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A Comparison of Different Methods of Iron Administration on Rate of Gain and Hemoglobin Level of the Baby Pig¹

South Dakota Agricultural Experiment Station, Brookings

Abstract

Injecting baby pigs during the first day of life with an iron-dextran solution providing 100 mg. of elemental iron resulted in higher hemoglobin values at 10, 21, and 28 days of age and heavier pigs at 28 days than when an oral iron pill was administered at 1, 10, and 21 days or when 250 mg. of peptonized iron was injected intramuscularly at 1 and 21 days of age.

Intramuscular iron-dextran injections during the first day of life did not completely prevent the decline in blood hemoglobin during the first two days; however, at 7 days of age these pigs had hemoglobin levels significantly higher than pigs not treated until 7 days of age. An injection providing 150 mg. of elemental iron resulted in higher hemoglobin values at 14 and 21 days than a 100-mg. injection. A second 100-mg. injection at 21 days of age gave comparable hemoglobin values at 28 days of age. Pigs that received an injection providing 100 mg. of iron at 7 days of age had hemoglobin values that were higher at 21 days but lower at 28 days than those of pigs that received 100 mg. of iron at 1 and again at 21 days of age. These three iron-dextran treatments all produced similar weight gains at 28 days of age.

Pigs that received iron-dextran providing either 100 mg. or 150 mg. of elemental iron and injected at 1 or 7, or 1 and 21 days of age did not significantly differ in body weight at 56 days of age.

¹ Contribution from the Department of Animal Husbandry and approved for publication by the director of the South Dakota Agricultural Experiment Station as Journal Series No. 447.

² Grateful acknowledgement is made to the Armour Laboratories, Kankakee, Illinois for the injectable iron-dextran.