Investigations on the influence of different levels of energy supply on growth rate feed utilization and body composition of pigs part 1 methods energy utilization for live weight gain carcass characteristics

Guette, J.O.; Heunisch, E.; Heine, T.

Zeitschrift fuer Tierphysiologie Tierernaehrung und Futtermittelkunde 40(4): 171-183

1978


Accession: 005750352

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Abstract
In Belgian Landrace pigs between 25 and 99 kg live weight, energy supply was varied at 5 levels from 2-4 times the maintenance requirement by addition of a mixture of 80% starch and 20% saccharose to a basal diet. Increase of energy intake did cause an increase of live weight gain from 372-828 g/day, increase of dressing percentage from 78.1-82.9%, increase of backfat thickness from 13.5-29.4 mm, and increase of the ratio of fat area to muscle area from 0.30-0.69. The lowest amount of energy per kg of live weight gain was needed at energy supply levels 3.0 and 3.5 times maintenance requirement (2.14 kg TDN [total digestible N] per kg live weight gain).