HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Sutton, A. L. Articles by Nelson, D. W. Search for Related Content PubMed Articles by Sutton, A. L. Articles by Nelson, D. W.

Effect of Dietary Salt Level and Liquid Handling Systems on Swine Waste Composition^{1 ,2 ,3,}

Purdue University, West Lafayette, IN 47907

Abstract

A 2-year experiment was conducted to study the effects of .2 or .5% salt (NaCl) in growing-finishing swine diets and aerobic (oxidation ditch) or anaerobic (deep pit) liquid waste systems on swine performance and waste nutrient composition.

Neither dietary salt content nor waste handling system affected pig gains or feed conversion. Waste from pigs fed .5% salt contained higher sodium levels than waste from pigs fed .2% salt. During the study, the sodium level increased in the waste pits beneath pigs fed the .5% salt diet, whereas the sodium level in the waste pits beneath pigs fed the .2% salt diet remained relatively constant.

Aerobically treated waste contained lower dry matter and higher dissolved oxygen concentrations, had higher pH and temperature on a wet basis, and lower ammonium nitrogen and higher nitrate nitrogen, potassium and sodium concentrations on a dry weight basis that anaerobic waste. The average percentage of ammonium nitrogen to total Kjeldahl nitrogen was 42% in aerobic pits, 53% in anaerobic pits, 45.5% in waste from pigs fed .5% salt diets and 49.5% in waste from pigs fed .2% salt diets.

Copper and phosphorus levels in wastes were directly related to the dry matter content of the waste. Sodium and potassium concentrations (dry weight basis) were higher in aerobically treated waste from pigs fed the .5% salt diet compared to anaerobically treated waste from pigs fed the .2% salt diet.

¹ Journal Paper No. 6242, Purdue University Agricultural Experiment Station. Contribution from Departments of Animal Sciences, Agricultural Engineering and Agronomy.

² Supported in part by Grant No. 12-14-100-9961(44) from the Agricultural Research Service, United States Department of Agriculture.

³ The authors acknowledge the assistance of Mr. Rickie Chastain, Mr. Joseph Rierden, Mr. Dan Kelly and Mrs. Sylvia Shepler with chemical analyses and sample collection.

⁴ Assistant Professor and Professor of Animal Sciences, Associate Professor of Agricultural Engineering and Associate Professor of Agronomy, respectively.

This article has been cited by other articles:

				M. Choudhary, L.D. Bailey, and C.A. Grant Review of the Use of Swine Manure in Crop Production: Effects On Yield and Composition and On Soil and Water Quality Waste Management Research, January 1, 1996; 14(6): 581 - 595. [Abstract] [PDF]