Metabolism of Cystine by Merino Sheep Genetically Different in Wool Production I. Comparison of the Entry Rates of Cystine in Sheep From Flocks Selectively Bred for High and Low Fleece Weight

Abstract

The rates of entry of cystine into the extracellular compartment, and the concentrations of cystine in this compartment, were measured during 12-14 hr infusions ofL-[35S]cystine in Peppin Merino ewes_ The ewes were sampled from flocks selectively bred for high or low clean fleece weight per head; and were fed either 500 or 1100 g of chaffed lucerne hay daily during the experiment.