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Acceptability and Digestibility of Dried Citrus Pulp by Horses^{1 ,2,}

University of Florida, Gainesville 32611

Abstract

Two acceptability trials with eight mature horses were used to compare coarse grain concentrates containing 0 or 30% dried citrus pulp in place of oats. All of the horses consumed the control concentrate readily and two of the eight horses consumed the concentrate containing dried citrus pulp. Six horses refused the citrus pulp concentrate, consuming only 8.6% of the feed offered. Four horses were offered 1.75 kg/100 kg body weight of complete pelleted diets containing 0, 15 and 30% dried citrus pulp. Three of the horses consumed all of the feed offered while one horse refused 3% of the diet containing 30% dried citrus pulp.

Two single reversal digestion studies with four mature geldings were used to compare digestibilities of the previously mentioned complete pelleted diets. Apparent digestibilities of organic matter, ether extract and gross energy for the three diets were not different (P>.05). Apparent digestibilities of acid-detergent fiber and nitrogen free extract were higher for the dried citrus pulp diets (P<.05) and crude protein digestibility lower with the 30% dried citrus pulp diets (P<.05). Dried citrus pulp is a suitable ingredient for inclusion in pelleted diets for mature horses at levels up to 15% as a replacement for oats.

¹ Animal Science Department, Florida Agr. Exp. Sta. Journal Series No. 1034.

² This study was funded in part by a grant from the Florida Canner's Association, Winter Haven.

³ The authors wish to express their appreciation to J. R. Kilcrease and the staff of the Horse Research Center, Sherri Pelzer and the staff of the Horse Teaching Unit, F. G. Martin and Pat Voss for their assistance with this study and Suni-Citrus Products Co., Haines City, FL, Adams Packing Association, Inc., Auburndale, FL and Minute Maid, Plymouth, FL for providing the dried citrus pulp.

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