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Relationship of Feed Intake and Length of Collection Period to Apparent Digestibility of a Self-Fed, Pelleted Lamb Ration¹

Kentucky Agricultural Experiment Station

Abstract

Over 40 crossbred California wether lambs were used in a digestion study involving a 21-day preliminary and a 7-day fecal collection period. The lambs were fitted with feces collection bags and self-fed a ,'' pelleted, fattening ration. A comparison of 3- and 7-day collection periods showed a significant difference in dry matter digestibility (DMD), the more reliable mean being obtained from a 7-day fecal collection. No relationship existed between daily intake (DI), body weight (BW) and DMD as shown by multiple correlation. Simple correlation of DMD and DI or BW showed no relationship. A highly significant relationship existed between BW and DI.

¹ The investigation reported in this paper is in connection with projects of the Kentucky Agricultural Experiment Station and is published by permission of the director.

² Present address: Oklahoma State University, Stillwater.