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Comparison of apparent and true digestibility of nutrients determined in dairy cows either by the nylon capsule or in vivo method

Author

Listed:
  • J. Třináctý

    (Research Institute for Cattle Breeding, Ltd., Rapotín, Workplace Pohořelice, Czech Republic)

  • M. Richter

    (Research Institute for Cattle Breeding, Ltd., Rapotín, Workplace Pohořelice, Czech Republic)

  • P. Homolka

    (Research Institute of Animal Production, Prague-Uhříněves, Czech Republic)

  • M. Rabišková

    (University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic)

  • P. Doležal

    (Mendel University of Agriculture and Forestry, Brno, Czech Republic)

Abstract

In this study the values of true digestibility of DM, OM, CP, NDF and starch determined either by the nylon capsule method or conventional in vivo method were compared. Four intact crossbred dairy cows (mean milk yield 21.9 kg/d) were used in two experimental periods. TMR consisted of maize silage, lucerne hay and concentrate. Nylon capsules (external diameter 10 mm) were made of nylon cloth (pore size 42 µm). Capsules were filled with TMR and at the beginning of the in vivo trial they were administered orally as a paper bolus into the cows. The values of true digestibility (after washing loss correction) of DM and OM, as determined by means of the nylon capsule method were lower than those estimated by the in vivo method. The respective differences were -6.9 and -7.3% (P < 0.05). Insignificant differences were found in CP, NDF and starch.

Suggested Citation

  • J. Třináctý & M. Richter & P. Homolka & M. Rabišková & P. Doležal, 2005. "Comparison of apparent and true digestibility of nutrients determined in dairy cows either by the nylon capsule or in vivo method," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 50(9), pages 402-410.
    • Handle: RePEc:caa:jnlcjs:v:50:y:2005:i:9:id:4181-cjas
    DOI: 10.17221/4181-CJAS
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