report
Authors
One hundred and forty-four finishing pigs (initial weight 126 lb) were utilized to determine the effects of PST dosage (4 or 8 mg PST' head^-1day^-1 ) and dietary lysine level (.8, 1,0, 1.2, or 1.4%) on growth performance and carcass characteristics. Pigs were injected daily in the extensor muscle of the neck with either 4 or 8 mg PST and fed a pelleted corn-soybean meal-sesame meal diet containing .8% lysine. Additional lysine levels of 1.0, 1.2, and 1.4% were provided by L-lysine HCl. Control pigs (placebo injection) received the .8% lysine diet. All diets were formulated to contain at least 220% of NRC (1979) recommendations for other amino acids, vitamins and minerals. There were no PST x lysine interactions for any observed traits (P>,1 0), so only main effects are reported. Increasing level of dietary lysine resulted in linear improvements in average daily gain (ADG) and feed conversion (F/G) in PST treated pigs. Adjusted backfat thickness (ABF) was lowered (linear P.10) by increasing dietary lysine level and were also increased (linear P<.10) by PST dosage.; Swine Day, Manhattan, KS, November 17, 1988
Keywords: Swine day, 1988, Kansas Agricultural Experiment Station contribution, no. 88-149-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 556, Swine, Porcine somatotropin, Dosage, Lysine requirement, Growth performance, Carcass traits, Finishing pigs
How to Cite: Schricker, B. R. , Stoner, G. R. , Danler, R. J. , Thaler, R. C. , Kenny, B. P. , Hurt, S. S. , Fitzner, G. E. , Apple, J. , Warren, K. , Goodband, R. D. , Nelssen, J. L. , Hines, R. H. , Kropf, D. H. & Hancock, J. D. (1988) “The effects of porcine somatotropin (pST) dosage and dietary lysine level on growth performance and carcass characteristics of finishing swine”, Kansas Agricultural Experiment Station Research Reports. 1(10). doi: https://doi.org/10.4148/2378-5977.6244