Nutrition

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The effect of the Ca: total phosphorus ratio on the efficacy of supplemental phytase in the diets of weanling swine – monograph

Posted in: Nutrition, Pork Insight Articles, Prairie Swine Centre by PSCI on July 10, 2017


Phytase (500 FTU/kg) addition to com-soymeal diets fed to weanling pigs increased P digestibility from 42 to 53 %. Moreover, the excretion of soluble inorganic P in the faeces, whether expressed in g/d or as a proportion of total P intake was decreased with the addition of 500 FfU phytase to the diet. The efficacy of phytase was decreased as the Ca:tP ratio increased from 1.12 to 2.31. Adding phytase to a swine diet decreases output of total P in the manure. If the diet is formulated to account for the increased available P due to the phytase (ie. reduced tP) then the excretion of water soluble phytase in the manure will decrease similar to the reduction in tP excreted.

The effect of Ca- total phosphorus ratio on the efficacy of supplemental phytase in the diets of weanling swine

 
 
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