Dietary total sulfur amino acid requirement for optimal growth performance and carcass characteristics in finishing gilts

Dietary total sulfur amino acid requirement for optimal growth performance and carcass characteristics in finishing gilts

Loughmiller, J.A.; Tokach, M.D.; Goodband, R.D.; Nelssen, J.L.; Titgemeyer, E.C.; Kim, I.H.; Bergstrom, J.R.; Smith, J.W.II

Conference paper

Publication Date: 1996

Conference: Swine Day, Manhattan, KS, November 21, 1996
Starting Page: 133, Ending Page: 135
Publisher: Kansas State University. Agricultural Experiment Station and Cooperative Extension Service

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Abstract:

Finishing gilts (initially 163 lb) were fed .58% total lysine (.50% apparent digestible) and total sulfur amino acid (TSAA) concentrations of .26,.285, .31, .335, and .36% (.225 to .325% apparent digestible). These values represent TSAA: lysine ratios of 45, 50, 55, 60, and 65%. Results suggest a linear decrease in ADG and ADFI along with poorer F/G with increasing TSAA levels. However, gilts fed .285% TSAA (50% of lysine) had the best ADG and F/G. No effect was observed on any carcass criteria. Based on the results of this study, the TSAA requirement is not greater than .285% total (.25% apparent digestible) or approximately 50% of the lysine requirement.

Keywords: Swine; Finishing pigs; Growth; Total sulfur amino acids

URL for this item: http://hdl.handle.net/2097/3125

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