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Pig Journal Volume: 57
Publication date: May 2006

Proceedings Section

ORGANIC ACIDS, PIG HEALTH AND PERFORMANCE
H.M. Miller and R.D. Slade

Abstract
This paper describes two experiments with organic acids conducted at Leeds University as part of the NUTWEAN project. The first experiment tested the effects of feeding diets with or without an acid blend (formic and propionic acids), fed with or without phytase replacement of dicalcium phosphate, on the performance of four-week weaned piglets. Neither acid nor phytase treatments were different from the negative control and there were no interactions between them. Phytase was able to replace dicalcium phosphate. In the second experiment, the effects of four levels of dietary sodium butyrate (0, 1.5, 3 and 6 g/kg) were compared when fed with or without zinc oxide to four-week weaned pigs. Zinc oxide improved all aspects of piglet performance. Sodium butyrate improved villus height and feed conversion ratio. Performance effects varied with zinc treatment. With zinc oxide, there was a linear increase in gain with increasing sodium butyrate in the diet. Without zinc oxide, performance was only improved at 1.5g/kg. This level of inclusion gave similar performance to the zinc oxide control diet without sodium butyrate.

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