Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Nutrient Requirements of High-Lean Gain Swine at a High Environmental Temperature

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  024048,  2002 ASAE Annual Meeting. (doi: 10.13031/2013.24042) @2002
Authors:   J A Nienaber, T M Brown-Brandl, J T Yen, J M Klindt, L W Turner, J L Usry
Keywords:   Keywords: Digestible lysine, Metabolizable energy, Carcass composition, Heat stress, Performance

High-lean gain swine initially averaging 85 kg were assigned to 96 individual pens and given one of six diets ranging in the ratio of Total Ileal Digestible (TID) Lysine:Metabolizable Energy (ME) of 1.23 to 2.28 g/MCal. Pigs and feed intake were weighed weekly and backfat was measured on two week intervals. Blood samples were drawn initially and at the final weighing, then analyzed for plasma urea nitrogen. Animals were marketed at 120 kg and packer carcass data were obtained. A second experiment used ninety-six 81 kg individually penned barrows at an environmental temperature of 28 30C and fed one of four diets containing 1.89 g TID Lysine/MCal ME with 0 to 6% dietary fat. Animal weights, feed intake, and slaughter data were collected as in experiment I. The optimal TID Lysine/ME ratio (1.89 g/MCal) was based on performance data, slaughter data, and circulating levels of plasma urea nitrogen. The optimal level of dietary fat for this high-lean gain population was near 4% for the 28-30C environmental temperature. This was based on performance and slaughter data.

(Download PDF)    (Export to EndNotes)