J. Anim Sci.
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J. Anim Sci. 1968. 27:718-723.
© 1968 American Society of Animal Science
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Oxalate Metabolism in Sheep I. Effect of Low Level Halogeton Glomeratus Intake on Nutrient Balance1

Lynn F. James2, Joseph C. Street3, John E. Butcher3 and Wayne Binns2, 4,

United States Department of Agriculture and Utah Agricultural Experiment Station, Logan

Abstract

Sixteen wether lambs were assigned to an equalized pair feeding trial of 12 weeks' duration. One lamb of each pair received a diet containing 3.2% oxalate (supplied as that in Halogeton glomeratus) while the other received a similar diet without oxalate. Five-day fecal and urine collections were made during the 1st, 6th and 12th weeks of the trial. Feed and feces were analyzed for dry matter, ash, nitrogen, cellulose and gross energy. Specific gravity, energy and nitrogen were determined on the urine. Apparent digestibility and partitioning of nutrients were calculated from the results.

Dry matter digestibility was higher for the halogeton diet but cellulose digestibility was the same.

The diet containing oxalate was higher in ash but lower in cellulose and gross energy than the basal diet. Analyses indicated that sodium was the major cation neutralizing oxalate. The high ash content resulted in a marked diuretic effect.

The water intake was higher in the lambs receiving halogeton. They also excreted more urine but less fecal water than the controls. The greater dry matter digestibility of the halogeton diet suggests that the soluble ash was absorbed and excreted in the urine. These findings also suggest that water intake may influence the consumption of halogeton. Water availability may also be a factor in acute halogeton poisoning.

Preliminary investigation showed that sheep may consume much higher amounts of oxalate when supplied in halogeton than when the oxalate is supplied in the pure form.

Footnotes

1 The work reported here was completed as partial requirement of the degree of doctor of philosophy for Dr. James.

2 U.S.D.A., A.R.S., A.D.P. Division, Logan, Utah.

3 Department of Animal Science, Utah State University, Logan.

4 The authors wish to acknowledge the help of Richard P. Lehman in the statistical analysis of the data.






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Copyright © 1968 by the American Society of Animal Science.