Abstract

A total of 224 nursery pigs (PIC L 327L × C22) initially 12.9 ± 3.0 lb and 21 d of age were used in a 28-d feeding trial. The objective of our study was to evaluate the effects of oregano oil, with or without an in-feed antimicrobial. Oregano oil is a plant extract derived from the Greek herb, Origanum vulgare. It has been speculated to have antimicrobial-like activity. There were four dietary treatments in a 2 × 2 factorial. Diets consisted of a negative control (without an antibiotic or oregano oil), the control diet plus neomycin/oxytetracycline (140 g/ton), the control diet plus oregano oil, or the control diet with both neomycin/ oxytetracycline and oregano oil. The oregano oil (5%) was added to an inert carrier (95%) to make a premix that was added to the diet at 2 lb/ton in phase 1 (d 0 to 14) and 1 lb/ton in phase 2 (d 14 to 28). During the 28-d trial, neomycin/oxytetracycline improved ADG, ADFI and F/G. Pigs fed dietary treatments containing neomycin/oxytetracycline had the heaviest average weights at the end of the trial. Adding oregano oil to nursery pig diets did not improve ADG, ADFI, or F/G during the 28-d trial.; Swine Day, 2004, Kansas State University, Manhattan, KS, 2004

Keywords: Swine day, 2004, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 940, Kansas Agricultural Experiment Station contribution , no. 05-113-S, Nursery pigs, Neomycin/Oxytetracycline, Swine, Oregano, Pigs

How to Cite:

Neill, C. R., Groesbeck, C. N., Lawrence, K. R., Hastad, C. W., Gottlob, R. O., Hildabrand, B. M., Nelssen, J. L., Tokach, M. D., Goodband, R. D., DeRouchey, J. M. & Dritz, S. S., (2004) “Evaluating oregano oil as a growth enhancer in nursery pig diets”, Kansas Agricultural Experiment Station Research Reports 1(10), 29-31. doi: https://doi.org/10.4148/2378-5977.6885