Abstract
A 21-day growth trial was conducted to determine the threonine: lysine ratio necessary to optimize growth performance of the 25 to 50 Ib pig reared in a high-health, segregated early-weaning (SEW) system. Ten experimental diets, including two levels of lysine (.75% and 1.10% apparent digestible lysine) and five apparent digestible threonine:lysine ratios (40, 47.5, 55, 62.5, and 70%), were used in a 2 x 5 factorial arrangement. Growth performance was improved by feeding 1.10% rather than.75% digestible lysine. Also, results indicated that the apparent digestible threonine requirement for the SEW:-reared, 25 to 50 lb pig is approximately 55% of digestible lysine.; Swine Day, Manhattan, KS, November 21, 1996
Keywords: Swine day, 1996, Kansas Agricultural Experiment Station contribution, no. 97-142-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 772, Swine, Early-weaned pigs, Amino acids, Threonine
How to Cite:
Bergstrom, J. R., Loughmiller, J. A., Musser, R. E., Nessmith, W. B., Jr, Nelssen, J. L., Tokach, M. D., Goodband, R. D. & Dritz, S. S., (1996) “Determining the optimal threonine:lysine ratio for the 25 to 50 lb pig”, Kansas Agricultural Experiment Station Research Reports 1(10), 22-25. doi: https://doi.org/10.4148/2378-5977.6516
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