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Effect of microbial phytase on apparent digestibility and retention of phosphorus and nitrogen in growing pigs

Author

Listed:
  • P. Patráš

    (Research Institute of Animal Production, Nitra, Slovak Republic)

  • S. Nitrayová

    (Research Institute of Animal Production, Nitra, Slovak Republic)

  • A. Sommer

    (Research Institute of Animal Production, Nitra, Slovak Republic)

  • J. Heger

    (Research Institute of Animal Production, Nitra, Slovak Republic)

Abstract

Six female pigs of approximately 50 kg BW, fitted with simple T-cannula in the terminal ileum, were used to study the effect of microbial phytase on apparent total tract digestibility and retention of P and N. Three P-adequate diets (digestible P concentration 2.3 g/kg) containing barley (B), soybean meal (S) or their mixture (BS) with or without phytase supplement (1 000 FTU/kg) were fed to pigs using a 6 × 6 Latin square design. The addition of phytase increased (P < 0.05) apparent total P digestibility of diets S and BS from 56.5 and 57.2% to 69.0 and 65.2%, respectively, and apparent plant P digestibility of the same diets from 41.3 and 50.0% to 60.5 and 60.0%, respectively. An insignificant improvement in total and plant P digestibilities was found in diet B. Phytase supplementation reduced (P < 0.05) P excretion in pigs fed diets S and BS by 25 and 14%, respectively. As compared with diets S and BS, urinary P excretion in pigs fed diet B was much higher, which suggests a lower requirement for available P due to the lower protein deposition and growth rate. Phytase supplementation had no effect on digestibility or retention of N. In all three diets, total tract P digestibility was lower (P < 0.05) than ileal digestibility thus indicating a net flux of P into the large intestine.

Suggested Citation

  • P. Patráš & S. Nitrayová & A. Sommer & J. Heger, 2006. "Effect of microbial phytase on apparent digestibility and retention of phosphorus and nitrogen in growing pigs," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 51(10), pages 437-443.
    • Handle: RePEc:caa:jnlcjs:v:51:y:2006:i:10:id:3962-cjas
    DOI: 10.17221/3962-CJAS
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    References listed on IDEAS

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    1. P. Zobač & I. Kumprecht & P. Suchý & E. Straková & J. Brož & J. Heger, 2004. "Influence of L-lactic acid on the efficacy of microbial phytase in broiler chickens," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 49(10), pages 436-443.
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    Cited by:

    1. S. Nitrayová & P. Patráš & M. Brestenský & J. Zelenka & J. Brož & J. Heger, 2009. "Effect of microbial phytase and diet fermentation on ileal and total tract digestibility of nutrients and energy in growing pigs," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(4), pages 163-174.

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