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Pig Journal Volume: 49
Publication date: June 2002

Refereed Section

THE EFFECT OF DIFFERENT LYSINE LEVELS IN THE FOOD ON POST-WEANING PIGLET PERFORMANCE
by B.G. Baumann and G. Bilkei

Abstract
Low protein levels combined with high dietary fibre positively influence post-weaning (PW) Escherichia (E.) coli caused enteric diseases. On the other hand, practical experience shows that in case of PW wasting (PWW), higher than generally suggested amino acid levels in the feed are needed.
???? In a large commercial pig unit with a high prevalence of E. coli associated post-weaning problems, the following trial has been conducted. Four 4 week-old weaned piglets, suffering PWW were randomly selected for the trial. The piglets were assigned to 4 trial groups. The groups received a similar weaning formula with the following different lysine contents:
    Group one (479 piglets): 1%
    Group two (482 piglets): 1.3 %
    Group three (479 piglets): 1.6 %
    Group four (480 piglets): 1.9 %
The average daily weight gain (ADG), average daily food intake (AFI) and average food conversion (FC) were evaluated.
???? The results showed that the piglets which received the weaning formula with 1% lysine had less ADG (significant p<0.05) and greater FC and AFI than those with 1.3%, 1.6% or 1.9% lysine. The best ADG, AFI and FC were shown produced by the group receiving 1.6% lysine in their food. The authors show that piglets suffering PWW need higher amino acid levels than piglets of normal body condition and health.

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