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Effect of Protein Levels on the Growth of Weanling and Yearling Ponies¹

University of Minnesota, St. Paul 55101

Abstract

A growth trial with 30 individually fed weanling Shetland ponies was conducted during a 17-month period. Average daily gain and feed intake were significantly less when 4-month-old ponies were fed a pelleted diet that contained about 11 to 12% protein than when ponies were fed diets containing approximately 14 or 15.5% protein. Weight gains of the ponies fed at the two higher levels of protein were similar.

After 8 months of age, none of the protein levels had a significant effect on average daily gain though feed intake was about 10% less by ponies fed at the lowest level of protein. All levels of protein intake provided 2.7 g or more of protein per kilogram of body weight, a value which is in excess of the 1.4 g/kg of body weight suggested by N.R.C. (1966).

¹ Paper No. 7724, Scientific Journal Series, Minnesota Agricultural Experiment Station, St. Paul.

² Department of Animal Science.

³ College of Veterinary Medicine.