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A Comparison of Intramuscular and Intraperitoneal Injection of Iron-Dextran¹

Iowa Agricultural and Home Economics Experiment Station, Ames^,3

Abstract

1. Growth rate was more rapid when pigs were injected intramuscularly with iron-dextran than when injected intraperitoneally; however, the 5-week weight differential of 0.79 lb. in Experiment I and the 6-week weight differential of 0.96 lb. in Experiment II were not statistically significant.
   
2. The hemoglobin data of Experiment I indicate equivalent utilization of the iron from the two sites of injection. The hemoglobin levels of pigs on either treatment averaged 10.4 gm. per 100 ml. of blood at 5 weeks of age.
   
3. In Experiment I the observed mortalities from birth to 5 weeks of age were the same (12%) in the intramuscular and intraperitoneal groups, and in Experiment II the birth to 6 week mortalities were 9.9 and 15.0%, respectively, the difference not being statistically significant.
   

¹ Journal Paper No. J-3681 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project No. 959.

² The authors gratefully acknowledge Armour Laboratories, Chicago, Illinois for grants-in-aid and materials and Tilney Farms, Lewisville, Minnesota for labor, facilities and animals which partially supported this research.

³ Animal Husbandry Department.